There are a few Harley Davidson fault codes that you may encounter. In 1982, the Harley Davidson Motor Company began using a standardized diagnostic system for their motorcycles. This system is known as DTCs, or Diagnostic Trouble Codes. DTCs are designated by a P,C,B or U. The letter denotes the system that the code is related to. For example, a P code is a Powertrain code, while a U code is a Utility code.
The most common Harley trouble codes are:
P0171- System Too Lean
P0174- System Too Rich
P1399- CKP Sensor Intermittent
U0300- Lost Communication With ECM/PCM
If your Harley Davidson experiences any of these faults, don’t panic! There are ways to troubleshoot and hopefully repair them. The first step is to research the code and see what it means. There are many online resources that can help with this, including Harley Davidson’s own website. Once you have an idea of what might be causing the problem, you can start troubleshooting.
Contents
What are the Harley Trouble codes and Their Solution
| DTC | PRIORITY ORDER | FAULT CONDITION | SOLUTION |
| B1103 | 47 | LHCM internal error | SWITCH DIAGNOSTICS |
| B1153 | 46 | RHCM internal error | SWITCH DIAGNOSTICS |
| B1200 | 37 | IM internal fault | NO INSTRUMENT POWER DIAGNOSTICS |
| B1210 | 176 | Fuel level sender shorted low/open | FUEL GAUGE AND SENDER DIAGNOSTICS |
| B1211 | 182 | Fuel level sender shorted high | FUEL GAUGE AND SENDER DIAGNOSTICS |
| B1212 | 175 | Fuel signal low | FUEL GAUGE AND SENDER DIAGNOSTICS |
| B1213 | 176 | Fuel signal high | FUEL GAUGE AND SENDER DIAGNOSTICS |
| B1300 | 340 | Radio voltage high | AUDIO VOLTAGE DIAGNOSTICS |
| B1301 | 341 | Radio voltage low | AUDIO VOLTAGE DIAGNOSTICS |
| B1302 | 342 | Faceplate home button stuck | FACEPLATE BUTTON DIAGNOSTICS |
| B1303 | 343 | Faceplate favorite button stuck | FACEPLATE BUTTON DIAGNOSTICS |
| B1304 | 344 | Faceplate navigation button stuck | FACEPLATE BUTTON DIAGNOSTICS |
| B1305 | 345 | Faceplate power/mute button stuck | FACEPLATE BUTTON DIAGNOSTICS |
| B1306 | 399 | Rear hand controls shorted high | REAR AUDIO CONTROL DIAGNOSTICS |
| 81307 | 400 | Rear hand controls shorted low | REAR AUDIO CONTROL DIAGNOSTICS |
| 81308 | 401 | Rear volume up button stuck | REAR AUDIO CONTROL DIAGNOSTICS |
| B1309 | 402 | Rear volume down button stuck | REAR AUDIO CONTROL DIAGNOSTICS |
| B1310 | 403 | Rear mode button stuck | REAR AUDIO CONTROL DIAGNOSTICS |
| 81311 | 404 | Rear PTT button stuck | REAR AUDIO CONTROL DIAGNOSTICS |
| B1312 | 405 | Rear tune up button stuck | REAR AUDIO CONTROL DIAGNOSTICS |
| B1313 | 406 | Rear tune down button stuck | REAR AUDIO CONTROL DIAGNOSTICS |
| B1314 | 346 | LHCM VR PTT button stuck | FRONT HAND CONTROLS DIAGNOSTICS |
| B1315 | 347 | LHCM up button stuck | FRONT HAND CONTROLS DIAGNOSTICS |
| B1316 | 348 | LHCM left button stuck | FRONT HAND CONTROLS DIAGNOSTICS |
| B1317 | 349 | LHCM center button stuck | FRONT HAND CONTROLS DIAGNOSTICS |
| B1318 | 350 | LHCM right button stuck | FRONT HAND CONTROLS DIAGNOSTICS |
| B1319 | 351 | LHCM down button stuck | FRONT HAND CONTROLS DIAGNOSTICS |
| B1320 | 352 | RHCM info button stuck | FRONT HAND CONTROLS DIAGNOSTICS |
| B1321 | 353 | RHCM up button stuck | FRONT HAND CONTROLS DIAGNOSTICS |
| B1322 | 354 | RHCM left button stuck | FRONT HAND CONTROLS DIAGNOSTICS |
| B1323 | 355 | RHCM center button stuck | FRONT HAND CONTROLS DIAGNOSTICS |
| B1324 | 356 | RHCM right button stuck | FRONT HAND CONTROLS DIAGNOSTICS |
| B1325 | 357 | RHCM down button stuck | FRONT HAND CONTROLS DIAGNOSTICS |
| B1326 | 358 | RHCM CB squelch up button stuck | FRONT HAND CONTROLS DIAGNOSTICS |
| B1327 | 359 | RHCM CB PTT button stuck | FRONT HAND CONTROLS DIAGNOSTICS |
| B1328 | 360 | RHCM CB squelch down button stuck | FRONT HAND CONTROLS DIAGNOSTICS |
| 81329 | 361 | Faceplate preset button 1 stuck | FACEPLATE BUTTON DIAGNOSTICS |
| B1330 | 362 | Faceplate preset button 2 stuck | FACEPLATE BUTTON DIAGNOSTICS |
| B1331 | 363 | Faceplate preset button 3 stuck | FACEPLATE BUTTON DIAGNOSTICS |
| B1332 | 364 | Faceplate preset button 4 stuck | FACEPLATE BUTTON DIAGNOSTICS |
| 81333 | 365 | Faceplate preset button 5 stuck | FACEPLATE BUTTON DIAGNOSTICS |
| B1334 | 366 | Faceplate preset button 6 stuck | FACEPLATE BUTTON DIAGNOSTICS |
| B1335 | 367 | Faceplate preset button 7 stuck | FACEPLATE BUTTON DIAGNOSTICS |
| B1336 | 368 | Faceplate preset button 8 stuck | FACEPLATE BUTTON DIAGNOSTICS |
| B1337 | 369 | Front left speaker shorted together | FRONT SPEAKER DIAGNOSTICS |
| B1338 | 370 | Front left speaker open | FRONT SPEAKER DIAGNOSTICS |
| B1339 | 371 | Front left speaker shorted low | FRONT SPEAKER DIAGNOSTICS |
| B1340 | 372 | Front left speaker shorted high | FRONT SPEAKER DIAGNOSTICS |
| B1341 | 373 | Rear left speaker shorted together | REAR SPEAKER DIAGNOSTICS |
| B1342 | 374 | Rear left speaker open | REAR SPEAKER DIAGNOSTICS |
| B1343 | 375 | Rear left speaker shorted low | REAR SPEAKER DIAGNOSTICS |
| B1344 | 376 | Rear left speaker shorted high | REAR SPEAKER DIAGNOSTICS |
| B1345 | 377 | Front right speaker shorted together | FRONT SPEAKER DIAGNOSTICS |
| B1346 | 378 | Front right speaker open | FRONT SPEAKER DIAGNOSTICS |
| B1347 | 379 | Front right speaker shorted low | FRONT SPEAKER DIAGNOSTICS |
| B1348 | 380 | Front right speaker shorted high | FRONT SPEAKER DIAGNOSTICS |
| B1349 | 381 | Rear right speaker shorted together | REAR SPEAKER DIAGNOSTICS |
| B1350 | 382 | Rear right speaker open | REAR SPEAKER DIAGNOSTICS |
| B1351 | 383 | Rear right speaker shorted low | REAR SPEAKER DIAGNOSTICS |
| 81352 | 384 | Rear right speaker shorted high | REAR SPEAKER DIAGNOSTICS |
| B1353 | 385 | Speaker output | DC offset DTC B1353 |
| B1354 | 386 | GPS antenna open | SECURITY ANTENNA DIAGNOSTICS |
| B1355 | 387 | GPS antenna shorted low | SECURITY ANTENNA DIAGNOSTICS |
| B1356 | 388 | SDARS antenna open | SECURITY ANTENNA DIAGNOSTICS |
| B1357 | 389 | SDARS antenna shorted | SECURITY ANTENNA DIAGNOSTICS |
| B1358 | 390 | Front left headset shorted high | HEADSET DTCS |
| B1359 | 391 | Front right headset shorted high | HEADSET DTCS |
| B1360 | 392 | Front left headset shorted low | HEADSET DTCS |
| B1361 | 393 | Front right headset shorted low | HEADSET DTCS |
| B1362 | 394 | Rear left headset shorted high | HEADSET DTCS |
| B1363 | 395 | Rear right headset shorted high | HEADSET DTCS |
| B1364 | 396 | Rear left headset shorted low | HEADSET DTCS |
| 81365 | 397 | Rear right headset shorted low | HEADSET DTCS |
| B1366 | 398 | Internal thermal shutdown error | DTC 81366 |
| B1367 | 451 | WIM fault detected | Code used to support P&A parts. |
| B1401 | 407 | Amp voltage low | AUDIO VOLTAGE DIAGNOSTICS |
| B1402 | 408 | Amp voltage high | AUDIO VOLTAGE DIAGNOSTICS |
| 81403 | 409 | Speaker output DC offset | AMPLIFIER 1 DTCS |
| B1404 | 410 | Internal thermal shutdown error | AMPLIFIER 1 DTCS |
| B1405 | 427 | EQ correlation error | AUDIO SYSTEM SYMPTOMS |
| 81406 | 428 | Invalid or missing EQ | AUDIO SYSTEM SYMPTOMS |
| B1410 | 411 | Channel 1 speaker open | AMPLIFIER 1 DTCS |
| B1411 | 412 | Channel 1 speaker shorted low | AMPLIFIER 1 DTCS |
| B1412 | 413 | Channel 1 speaker shorted high | AMPLIFIER 1 DTCS |
| B1413 | 414 | Channel 1 speaker shorted together | AMPLIFIER 1 DTCS |
| B1420 | 415 | Channel 2 speaker open | AMPLIFIER 1 DTCS |
| B1421 | 416 | Channel 2 speaker shorted low | AMPLIFIER 1 DTCS |
| B1422 | 417 | Channel 2 speaker shorted high | AMPLIFIER 1 DTCS |
| B1423 | 418 | Channel 2 speaker shorted together | AMPLIFIER 1 DTCS |
| B1430 | 419 | Channel 3 speaker open | AMPLIFIER 1 DTCS |
| B1431 | 420 | Channel 3 speaker shorted low | AMPLIFIER 1 DTCS |
| B1432 | 421 | Channel 3 speaker shorted high | AMPLIFIER 1 DTCS |
| 81433 | 422 | Channel 3 speaker shorted together | AMPLIFIER 1 DTCS |
| B1440 | 423 | Channel 4 speaker open | AMPLIFIER 1 DTCS |
| B1441 | 424 | Channel 4 speaker shorted low | AMPLIFIER 1 DTCS |
| B1442 | 425 | Channel 4 speaker shorted high | AMPLIFIER 1 DTCS |
| B1443 | 426 | Channel 4 speaker shorted together | AMPLIFIER 1 DTCS |
| B2102 | 4 | System power output shorted high | SYSTEM POWER CIRCUIT DIAGNOSTICS |
| B2103 | 5 | System power output shorted low | SYSTEM POWER CIRCUIT DIAGNOSTICS |
| B2104 | 6 | System power output over- loaded | SYSTEM POWER CIRCUIT DIAGNOSTICS |
| B2106 | 257 | L4 open output | HEADLAMP DIAGNOSTICS |
| B2107 | 225 | L4 output shorted high | HEADLAMP DIAGNOSTICS |
| B2108 | 226 | L4 output shorted low | HEADLAMP DIAGNOSTICS |
| B2109 | 227 | L4 output overloaded | HEADLAMP DIAGNOSTICS |
| B2112 | 132 | ACC output shorted high | ACC CIRCUIT DIAGNOSTICS |
| B2113 | 134 | ACC output shorted low | ACC CIRCUIT DIAGNOSTICS |
| B2114 | 136 | ACC output overloaded | ACC CIRCUIT DIAGNOSTICS |
| B2116 | 92 | Fuel pump output open | FUEL PUMP DIAGNOSTICS |
| B2117 | 93 | Fuel pump output shorted high | FUEL PUMP DIAGNOSTICS |
| B2118 | 94 | Fuel pump output shorted low | FUEL PUMP DIAGNOSTICS |
| B2119 | 95 | Fuel pump output overloaded | FUEL PUMP DIAGNOSTICS |
| B2121 | 58 | Starter output open | STARTER OUTPUT DTCS |
| B2122 | 59 | Starter output shorted high | STARTER OUTPUT DTCS |
| B2123 | 60 | Starter output shorted low | STARTER OUTPUT DTCS |
| B2124 | 61 | Starter output overloaded | STARTER OUTPUT DTCS |
| B2127 | 243 | E4 output shorted high | HORN DIAGNOSTICS |
| B2128 | 244 | E4 output shorted low | HORN DIAGNOSTICS |
| B2129 | 245 | E4 output overloaded | HORN DIAGNOSTICS |
| B2131 | 233 | High beam open output | HEADLAMP DIAGNOSTICS |
| B2132 | 234 | High beam output shorted high | HEADLAMP DIAGNOSTICS |
| B2133 | 235 | High beam output shorted low | HEADLAMP DIAGNOSTICS |
| B2134 | 236 | High beam output overloaded | HEADLAMP DIAGNOSTICS |
| B2136 | 229 | Low beam open output | HEADLAMP DIAGNOSTICS |
| B2137 | 230 | Low beam output shorted high | HEADLAMP DIAGNOSTICS |
| B2138 | 231 | Low beam output shorted low | HEADLAMP DIAGNOSTICS |
| B2139 | 232 | Low beam output overloaded | HEADLAMP DIAGNOSTICS |
| B2141 | 207 | Left front turn signal output open | FRONT TURN SIGNAL DIAGNOSTICS |
| B2143 | 214 | Left front turn signal output shorted low | FRONT TURN SIGNAL DIAGNOST ICS |
| B2144 | 215 | Left front turn signal output overloaded | FRONT TURN SIGNAL DIAGNOST ICS |
| B2146 | 216 | Right front turn signal output open | FRONT TURN SIGNAL DIAGNOSTICS |
| B2148 | 217 | Right front turn signal output shorted low | FRONT TURN SIGNAL DIAGNOST ICS |
| B2149 | 218 | Right front turn signal output overloaded | FRONT TURN SIGNAL DIAGNOST ICS |
| 82151 | 219 | Left rear turn signal output open | REAR TURN SIGNAL DIAGNOSTICS |
| 82153 | 220 | Left rear turn signal output shorted low | REAR TURN SIGNAL DIAGNOST ICS |
| B2154 | 221 | Left rear turn signal output overloaded | REAR TURN SIGNAL DIAGNOSTICS |
| B2156 | 222 | Right rear turn signal output open | REAR TURN SIGNAL DIAGNOSTICS |
| B2158 | 223 | Right rear turn signal output shorted low | REAR TURN SIGNAL DIAGNOST ICS |
| B2159 | 224 | Right rear turn signal output overloader | REAR TURN SIGNAL DIAGNOST ICS |
| B2161 | 198 | Brake lamp output open | STOP LAMP DIAGNOSTICS |
| B2163 | 199 | Brake lamp output shorted low | STOP LAMP DIAGNOSTICS |
| B2164 | 200 | Brake lamp output overloaded | STOP LAMP DIAGNOSTICS |
| B2168 | 172 | Running lights output shorted low | RUNNING LAMP DIAGNOSTICS |
| B2169 | 173 | Running lights output over-loaded | RUNNING LAMP DIAGNOSTICS |
| B2172 | 237 | H2 output shorted high | ALARM DIAGNOSTICS |
| B2173 | 238 | H2 output shorted low | ALARM DIAGNOSTICS |
| 82176 | 239 | Security antenna output open | SECURITY ANTENNA DIAGNOSTICS |
| B2177 | 240 | Security antenna output shorted high | SECURITY ANTENNA DIAGNOSTICS |
| B2178 | 241 | Security antenna output shorted low | SECURITY ANTENNA DIAGNOSTICS |
| B2183 | 249 | G2 output shorted low | ADDITIONAL OUTPUT DIAGNOSTICS |
| B2188 | 254 | G3 output shorted low | ADDITIONAL OUTPUT DIAGNOSTICS |
| B2193 | 257 | H4 output shorted low | ADDITIONAL OUTPUT DIAGNOSTICS |
| B2198 | 259 | H3 output shorted low | ADDITIONAL OUTPUT DIAGNOSTICS |
| B2201 | 52 | IGN switch off w/VSS | IGN SWITCH DIAGNOSTICS |
| B2202 | 53 | Ignition switch accy with vehicle speed | IGN SWITCH DIAGNOSTICS |
| B2203 | 50 | Ignition switch input shorted low | IGN SWITCH DIAGNOSTICS |
| B2206 | 51 | Run/stop switch input open/shorted high | ENGINE STOP SWITCH DIAGNOSTICS |
| B2208 | 54 | Run/stop switch input shorted low | ENGINE STOP SWITCH DIAGNOSTICS |
| B2210 | 55 | Run/stop switch inputs open both | SWITCH DIAGNOSTICS |
| B2212 | 56 | Run/stop switch inputs both closed | SWITCH DIAGNOSTICS |
| 82218 | 131 | Neutral switch shorted low | NEUTRAL SWITCH DIAGNOSTICS |
| B2223 | 197 | Rear brake switch shorted low (light on) | STOP LAMP DIAGNOSTICS |
| B2226 | 247 | BAS input open | BCM not configured properly. |
| B2228 | 250 | BAS input shorted low | BCM not configured properly. |
| B2231 | 312 | Fork locked w/VSS | BCM not configured properly. This DTC should only apply to CVO models. |
| B2232 | 313 | Fork lock shorted high | BCM not configured properly. This DTC should only apply to CVO models. |
| B2233 | 314 | Fork lock shorted low | BCM not configured properly. This DTC should only apply to CVO models. |
| B2234 | 315 | Fork lock detected w/option disabled | BCM not configured properly. This DTC should only apply to CVO models. |
| B2235 | 316 | Fork lock configuration invalid | BCM not configured properly. This DTC should only apply to CVO models. |
| B2250 | 128 | Clutch switch stuck | SWITCH DIAGNOSTICS |
| B2251 | 242 | Horn switch stuck | SWITCH DIAGNOSTICS |
| B2252 | 437 | High beam switch stuck | SWITCH DIAGNOSTICS |
| B2253 | 228 | FTP switch stuck | SWITCH DIAGNOSTICS |
| B2254 | 203 | Left turn switch stuck | SWITCH DIAGNOSTICS |
| B2255 | 246 | Trip switch stuck | Trip Odometer Functions Inoperative, DTC 82255 |
| B2256 | 208 | LHCM police siren power switch stuck | BCM not configured properly. This DTC should only apply to Police models. |
| B2257 | 209 | LHCM police siren wail power switch stuck | BCM not configured properly. This DTC should only apply to Police models. |
| B2258 | 210 | LHCM police siren yelp switch stuck | BCM not configured properly. This DTC should only apply to Police models. |
| B2260 | 57 | Start switch stuck | SWITCH DIAGNOSTICS |
| B2261 | 204 | Right switch stuck turn | SWITCH DIAGNOSTICS |
| B2262 | 196 | Front switch stuck brake | SWITCH DIAGNOSTICS |
| B2263 | 202 | Hazard switch stuck | SWITCH DIAGNOSTICS |
| B2264 | 211 | RHCM police lights power switch stuck | BCM not configured properly. This DTC should only apply to Police models. |
| B2265 | 212 | RHCM police lights front switch stuck | BCM not configured properly. This DTC should only apply to Police models. |
| B2266 | 213 | RHCM police lights rear switch stuck | BCM not configured properly. This DTCshould only apply to Police models. |
| B2270 | 27 | BCM internal error | SWITCH DIAGNOSTICS |
| B2271 | 26 | BCM voltage low | BCM VOLTAGE DIAGNOSTICS |
| B2272 | 33 | BCM/IM voltage high | BCM VOLTAGE DIAGNOSTICS |
| B2274 | 49 | Constant battery line error | Odometer Self-Diagnostic Inoperative: DTC 00001, 00002, U0011, B2274 |
| C0562 | 38 | ABS voltage low | ABS VOLTAGE DIAGNOSTICS |
| C0563 | 40 | ABS voltage high | ABS VOLTAGE DIAGNOSTICS |
| C1014 | 183 | ABS ECU relay error | INTERNAL FAULT DIAGNOSTICS |
| C1021 | 191 | ABS front WSS always zero | WSS DIAGNOSTICS |
| C1023 | 192 | ABS rear WSS always zero | WSS DIAGNOSTICS |
| C1025 | 194 | ABS front wheel speed intermittent | WSS DIAGNOSTICS |
| C1027 | 195 | ABS rear wheel speed intermittent | WSS DIAGNOSTICS |
| C1029 | 193 | ABS wheel speed difference too high | WSS DIAGNOSTICS |
| C1032 | 189 | ABS front wheel speed circuit open shorted | WSS DIAGNOSTICS |
| C1034 | 190 | ABS rear wheel speed circuit open shorted | WSS DIAGNOSTICS |
| C1040 | 184 | ABS pump/motor error | INTERNAL FAULT DIAGNOSTICS |
| C1055 | 39 | ABS ECU internal error | INTERNAL FAULT DIAGNOSTICS |
| C1061 | 185 | ABS front apply solenoid circuit open/high resistance | INTERNAL FAULT DIAGNOSTICS |
| C1062 | 187 | ABS front release solenoid circuit open/high resistance | INTERNAL FAULT DIAGNOSTICS |
| C1065 | 186 | ABS rear apply solenoid circuit open/high resistance | INTERNAL FAULT DIAGNOSTICS |
| C1066 | 188 | ABS rear release solenoid circuit open/high resistance | INTERNAL FAULT DIAGNOSTICS |
| C1071 | 283 | Rear prime valve error | INTERNAL FAULT DIAGNOSTICS |
| C1072 | 284 | Rear isolation valve error | INTERNAL FAULT DIAGNOSTICS |
| C1073 | 285 | Front isolation valve error | INTERNAL FAULT DIAGNOSTICS |
| C1074 | 286 | Front prime valve error | INTERNAL FAULT DIAGNOSTICS |
| C1075 | 287 | Front linked inlet valve error | INTERNAL FAULT DIAGNOSTICS |
| C1076 | 288 | Front linked outlet valve error | INTERNAL FAULT DIAGNOSTICS |
| C1077 | 289 | Front circuit pressure sensor error | INTERNAL FAULT DIAGNOSTICS |
| C1078 | 290 | Rear circuit pressure sensor error | INTERNAL FAULT DIAGNOSTICS |
| C1081 | 291 | Front master pressure sensor error | INTERNAL FAULT DIAGNOSTICS |
| C1082 | 292 | Front master pressure sensor offset error | INTERNAL FAULT DIAGNOSTICS |
| C1083 | 293 | Front wheel pressure sensor error | INTERNAL FAULT DIAGNOSTICS |
| C1084 | 294 | Front wheel pressure sensor offset error | INTERNAL FAULT DIAGNOSTICS |
| C1085 | 295 | Rear master pressure sensor error | INTERNAL FAULT DIAGNOSTICS |
| C1086 | 296 | Rear master pressure sensor offset error | INTERNAL FAULT DIAGNOSTICS |
| C1087 | 297 | Rear wheel pressure sensor error | INTERNAL FAULT DIAGNOSTICS |
| C1088 | 298 | Rear wheel pressure sensor offset error | INTERNAL FAULT DIAGNOSTICS |
| C1089 | 299 | Pressure sensor external supply error | INTERNAL FAULT DIAGNOSTICS |
| C1159 | 43 | ABS invalid stored | VIN INVALID VIN DIAGNOSTICS |
| C1178 | 41 | ABS no VIN received from | ECM INVALID VIN DIAGNOSTICS |
| C1184 | 42 | ABS invalid VIN from | ECM INVALID VIN DIAGNOSTICS |
| C1195 | 266 | Wake up error | INTERNAL FAULT DIAGNOSTICS |
| P0031 | 153 | Front HO2S open low | HO2S DIAGNOSTICS |
| P0032 | 156 | Front HO2S shorted high | HO2S DIAGNOSTICS |
| P0051 | 154 | Rear HO2S open low | HO2S DIAGNOSTICS |
| P0052 | 155 | Rear HO2S shorted high | HO2S DIAGNOSTICS |
| P0072 | 112 | AAT sensor low | AAT SENSOR DIAGNOSTICS |
| P0073 | 113 | AAT sensor high open | MT SENSOR DIAGNOSTICS |
| P0107 | 100 | MAP sensor failed low open | TMAP SENSOR DIAGNOSTICS |
| P0108 | 101 | MAP sensor failed high/open port | TMAP SENSOR DIAGNOSTICS |
| P0112 | 123 | IAT sensor shorted low | TMAP SENSOR DIAGNOSTICS |
| P0113 | 125 | IAT sensor high open | TMAP SENSOR DIAGNOSTICS |
| P0117 | 102 | ET sensor shorted low | ET SENSOR DIAGNOSTICS |
| P0118 | 107 | ET sensor high open | ET SENSOR DIAGNOSTICS |
| P0120 | 76 | TPS 1 range error | TCA DIAGNOSTICS |
| P0122 | 74 | TPS 1 low | TCA DIAGNOSTICS |
| P0123 | 75 | TPS 1 high open | TCA DIAGNOSTICS |
| P0131 | 157 | 02 sensor low/engine lean (front) | HO2S DIAGNOSTICS |
| P0132 | 159 | Engine running rich (front) | HO2S DIAGNOSTICS |
| P0134 | 161 | Oxygen sensor high/open (front) | HO2S DIAGNOSTICS |
| P0151 | 158 | 02 sensor low/engine lean (rear) | HO2S DIAGNOSTICS |
| P0152 | 160 | Engine running rich (rear) | HO2S DIAGNOSTICS |
| P0154 | 162 | 02 sensor high/open (rear) | HO2S DIAGNOSTICS |
| P0220 | 79 | TPS 2 range error | TCA DIAGNOSTICS |
| P0222 | 77 | TPS 2 open low | TCA DIAGNOSTICS |
| P0223 | 78 | TPS 2 high | TCA DIAGNOSTICS |
| P0261 | 96 | Fuel injector low/open (front) | FUEL INJECTOR DIAGNOSTICS |
| P0262 | 97 | Fuel injector shorted high (front) | FUEL INJECTOR DIAGNOSTICS |
| P0264 | 98 | Fuel injector low/open (rear) | FUEL INJECTOR DIAGNOSTICS |
| P0265 | 99 | Fuel injector shorted high (rear) | FUEL INJECTOR DIAGNOSTICS |
| P0325 | 139 | Knock sensor front open circuit | KNOCK SENSOR DIAGNOSTICS |
| P0327 | 140 | Knock sensor front circuit low | KNOCK SENSOR DIAGNOSTICS |
| P0328 | 141 | Knock sensor front circuit high | KNOCK SENSOR DIAGNOSTICS |
| P0330 | 142 | Knock sensor rear open circuit | KNOCK SENSOR DIAGNOSTICS |
| P0332 | 143 | Knock sensor rear circuit low | KNOCK SENSOR DIAGNOSTICS |
| P0333 | 144 | Knock sensor rear circuit high | KNOCK SENSOR DIAGNOSTICS |
| P0371 | 65 | CKP sensor wrong number of pulses | CKP SENSOR DIAGNOSTICS |
| P0374 | 64 | CKP sensor no pulses | CKP SENSOR DIAGNOSTICS |
| P0444 | 147 | Purge solenoid low open | PURGE SOLENOID DIAGNOSTICS |
| P0445 | 148 | Purge solenoid shorted high | PURGE SOLENOID DIAGNOSTICS |
| P0462 | 174 | Fuel sender shorted low | FUEL GAUGE AND SENDER DIAGNOSTICS |
| P0463 | 175 | Fuel sender shorted high/open | FUEL GAUGE AND SENDER DIAGNOSTICS |
| P0502 | 137 | VSS failed low | PURGE SOLENOID DIAGNOSTICS |
| P0503 | 138 | VSS | failed high VSS DIAGNOSTICS |
| P0505 | 148 | Idle speed control – unstable | IDLE SPEED CONTROL DIAGNOSTICS |
| P0522 | 168 | Engine oil pressure sensor/switch shorted low | INDICATOR LAMPS |
| P0523 | 169 | Engine oil pressure sensor/switch shorted high open | INDICATOR LAMPS |
| P0562 | 127 | ECM voltage low BATTERY | AND SYSTEM VOLTAGE DIAGNOSTICS |
| P0572 | 202 | Brake switch low | BRAKE SWITCH DIAGNOSTICS |
| P0577 | 163 | Cruise control | input error Cruise Control |
| P0603 | 29 | ECM EEPROM memory error | ECM INTERNAL DIAGNOSTICS |
| P0605 | 28 | ECM FLASH memory error | ECM INTERNAL DIAGNOSTICS |
| P0641 | 62 | 5 Volt reference out of range | 5V REFERENCE DIAGNOSTICS |
| P0651 | 63 | 5 Volt reference 2 out of range | 5V REFERENCE DIAGNOSTICS |
| P0693 | 119 | Chassis fan control circuit shorted low | CHASSIS FAN DIAGNOSTICS |
| P0694 | 120 | Chassis fan control circuit shorted high | CHASSIS FAN DIAGNOSTICS |
| P1009 | 32 | VTD disabled fuel due to bad password | DTC P1009 |
| P1017 | 103 | ET indicates overheating | DTC P1017 |
| P1019 | 106 | ECT difference (high temp) | ECT SENSOR DIAGNOSTICS |
| P1270 | 67 | TGS 2 ND validation error | DTC P1270 |
| P1501 | 166 | JSS low | JSS DIAGNOSTICS |
| P1502 | 167 | JSS high open | JSS DIAGNOSTICS |
| P1505 | 445 | Power limit violation | HESITATION OR LOSS OF POWER |
| P1510 | 447 | ETC limited performance mode | ETC MANAGEMENT DIAGNOSTICS |
| P1511 | 448 | ETC power management mode | ETC MANAGEMENT DIAGNOSTICS |
| P1512 | 449 | ETC forced idle mode | ETC MANAGEMENT DIAGNOSTICS |
| P1514 | 87 | ETC airflow error | ETC ERROR DIAGNOSTICS |
| P1600 | 66 | ETC watchdog error | ETC ERROR DIAGNOSTICS |
| P1655 | 164 | ACR solenoid open low | ACR Diagnostics |
| P1656 | 165 | ACR solenoid shorted high | ACR Diagnostics |
| P1691 | 115 | Cooling fan left low open | COOLING FAN DIAGNOSTICS |
| P1692 | 116 | Cooling fan left shorted high | COOLING FAN DIAGNOSTICS |
| P1693 | 117 | Cooling fan right low open | COOLING FAN DIAGNOSTICS |
| P1694 | 118 | Cooling fan right shorted high | COOLING FAN DIAGNOSTICS |
| P2100 | 82 | ETC driver open circuit | ETC ACTUATOR DIAGNOSTICS |
| P2101 | 83 | ETC actuation error | ETC ACTUATOR DIAGNOSTICS |
| P2102 | 84 | ETC driver shorted low | ETC ACTUATOR DIAGNOSTICS |
| P2103 | 85 | ETC driver shorted high | ETC ACTUATOR DIAGNOSTICS |
| P2105 | 446 | ETC forced shutdown mode | DTC P2105, P2107 |
| P2107 | 68 | ETC driver internal error | DTC P2105, P2107 |
| P2119 | 81 | ETC actuator return error | DTC P2119 |
| P2122 | 69 | TGS 1 low/open | TGS DIAGNOSTICS |
| P2123 | 70 | TGS 1 high | TGS DIAGNOSTICS |
| P2127 | 71 | TGS 2 low/open | TGS DIAGNOSTICS |
| P2128 | 72 | TGS 2 high | TGS DIAGNOSTICS |
| P2135 | 80 | TPS correlation error | CORRELATION ERROR DIAGNOSTICS |
| P2138 | 73 | TGS correlation error | CORRELATION ERROR DIAGNOSTICS |
| P2176 | 86 | ETC zero position learning error | DTC P2176 |
| P2184 | 121 | ECT sensor low | ECT SENSOR DIAGNOSTICS |
| P2185 | 122 | ECT sensor high | ECT SENSOR DIAGNOSTICS |
| P2300 | 88 | Ignition coil driver low/open (front) | IGN COIL DRIVER DIAGNOSTICS |
| P2301 | 89 | Ignition coil driver shorted high (front) | IGN COIL DRIVER DIAGNOSTICS |
| P2303 | 90 | Ignition coil driver low/open (rear) | IGN COIL DRIVER DIAGNOSTICS |
| P2304 | 91 | Ignition coil driver shorted high (rear) | IGN COIL DRIVER DIAGNOSTICS |
| P2602 | 104 | Coolant pump “A” control circuit low | COOLING PUMP DIAGNOSTICS |
| P2603 | 105 | Coolant pump “A” control circuit high | COOLING PUMP DIAGNOSTICS |
| U0001 | 1 | CAN BUS error | Odometer Self-Diagnostic Inoperative: DTC 00001, 00002, U0011, B2274 |
| U0002 | 16 | CAN comm bus perf error | Odometer Self Diagnostic Inoperative: DTC 00001, 00002, U0011, 82274 |
| U0003 | 13 | Network management monitoring | NO VEHICLE POWER OR LOST COMMUNICATION DTCS |
| U0011 | 2 | CAN bus low shorted to CAN bus high | Odometer Self-Diagnostic Inoperative: DTC 00001, 00002, 00011, B2274 |
| U0100 | 7 | Lost comm w/ECM | NO VEHICLE POWER OR LOST COMMUNICATION DTCS |
| U0121 | 11 | Lost comm w/ABS | NO VEHICLE POWER OR LOST COMMUNICATION DTCS |
| U0140 | 3 | Lost comm w/BCM | NO VEHICLE POWER OR LOST COMMUNICATION DTCS |
| U0141 | 9 | Lost comm w/LHCM | NO VEHICLE POWER OR LOST COMMUNICATION DTCS |
| U0142 | 8 | Lost comm w/RHCM | NO VEHICLE POWER OR LOST COMMUNICATION DTCS |
| U0156 | 10 | Lost comm w/speedo | NO VEHICLE POWER OR LOST COMMUNICATION DTCS |
| U0158 | 180 | Lost comm w/fuel gauge | SECONDARY COMMUNICATION DIAGNOSTICS |
| U0159 | 181 | Lost comm w/volt gauge | SECONDARY COMMUNICATION DIAGNOSTICS |
| U0160 | 179 | Lost comm w/fuel and volt gauges | SECONDARY COMMUNICATION DIAGNOSTICS |
| U0184 | 323 | Lost comm w/radio | NO VEHICLE POWER OR LOST COMMUNICATION DTCS |
| U0185 | 325 | Lost comm w/AMP | 1 AMP COMMUNICATION DIAGNOSTICS |
| U0186 | 326 | Lost comm w/AMP | 2 AMP COMMUNICATION DIAGNOSTICS |
| U0187 | 20 | Lost comm w/AMP | 3 AMP COMMUNICATION DIAGNOSTICS |
| U0188 | 21 | Lost comm w/AMP | 4 AMP COMMUNICATION DIAGNOSTICS |
| U0300 | 15 | Internal control module software incompatibility | NO VEHICLE POWER OR LOST COMMUNICATION DTCS |
| U1302 | 324 | ACC bus pert error | SECONDARY COMMUNICATION DIAGNOSTICS |
| U1401 | 331 | Lost comm w CB | SECONDARY COMMUNICATION DIAGNOSTICS |
| U1401 | 331 | Lost comm w CB | COMMUNICATION DIAGNOSTICS |
| U1405 | 450 | ACC bus lost comm w/ WIM | Code used to support P&A parts |
Harley Trouble Codes Abbreviation List
ABS – Anti-Lock Braking System
ACR – Automatic Compression Release
AFR – Air Fuel Ratio
AIS – Active Intake Solenoid
ATS – Air Temperature Sensor
BAS – Bank Angle Sensor
BCM – Body Control Module
CAN – Controller Area Network
CCM – Cruise Control Module
CKP – Crank Position Sensor
DLC – Datalink Connector
DTC – Diagnostic Trouble Codes
ECM – Electronic Control Module
ECT – Engine Coolant Temperature
ECU – Electronic Control Unit
EFI – Electronic Fuel Injection
EFP – Electronic Fuel Pump
ET – Engine Temperature sensor
FI – Fuel Injectors
FPR – Fuel Pressure regulator
H-DSSS – Harley-Davidson Smart Security System
HCU – Hydraulic Control Unit, ABS
HFSM – Hands Free Security Module
HO2S – Heated Oxygen Sensor
IAC – Idle Air Control actuator
IAT – Intake Air Temperature sensor
ICM – Ignition Control Module
IMAP – MAP + IAT in one unit
ISS – Ion Sensing System
JSS – Jiffy Stand Sensor
LHCM – Left Hand Control Module
MAP – Manifold Absolute Pressure Sensor
MHR – Right Hand Control Module
RCM – Reverse Control Module
TCA – Throttle Control Actuator
TGS – Twist Grip Sensor
TMAP – Intake Air Temperature / Manifold Absolute Pressure equipment
TPS – Throttle Position Sensor
TSM / TSSM – (Turn Signal / Turn Signal Security Module)
VE – Volume Efficiency
VIN – Vehicle identification number
VSS – Vehicle Speed Sensor
WSS – Wheel Speed Sensor
List of P codes
P0031 Front HO2S low/open
P0032 Front HO2S shorted/high
P0051 Rear HO2S low/open
P0052 Rear HO2S shorted/high
P0072 AAT sensor low
P0073 AAT sensor high/open
P0107 MAP sensor failed low/open
P0107 Map Sensor Open/Low
P0108 MAP sensor failed high/open port
P0112 IAT Voltage Low
P0113 IAT Voltage Open/High
P0117 ET Sensor Low
P0118 ET Sensor High
P0120 TPS1 Range Error
P0122 TPS1 Low
P0123 TPS2 High/Open
P0131 Front Oxygen Sensor Low / Engine Lean
P0132 Front Oxygen Sensor High / Engine Rich
P0134 Front Oxygen Sensor Inactive
P0151 Rear Oxygen Sensor Low / Engine Lean
P0152 Rear Oxygen Sensor High / Engine Rich
P0154 Rear Oxygen Sensor Inactive
P0220 TPS2 Range Error
P0222 TPS2 Low/Open
P0223 TPS2 High/Open
P0261 Front Injector Open/Low
P0262 Front Injector High
P0263 Rear Injector Open/Low
P0264 Rear Injector High
P0265 Rear injector shorted high
P0371 CKP sensor wrong number of pulses
P0373 CKP Sensor Intermittent
P0374 CKP Sensor Synch Error
P0444 Purge Solenoid Open/Low
P0445 Purge Solenoid High
P0501 VSS Sensor Low
P0502 VSS Sensor High/Open
P0503 VSS failed high
P0505 Idle speed control unstable
P0562 Battery/ECM Voltage Low
P0563 Battery/ECM Voltage High
P0572 Brake Switch Low
P0577 Cruise Control Input High
P0603 ECM EEPROM Memory Error
P0605 ECM FLASH Memory Error
P0641 5 Volt Reference 1 Out of Range
P0651 5 Volt Reference 2 Out of Range
P0691 Fan/cooling relay output low/open
P0692 Fan/cooling relay output high
P1001 System Relay Coil Open/Low
P1002 System Relay Coil High/Shorted
P1003 System relay contacts open
P1004 System Relay Contacts Closed
P1009 VTD Disabled Fuel Due to Incorrect Password
P1010 Missing Password
P1017 ET indicates overheating
P1019 ECT Difference (high temp)
P1270 TGS 2 A/D Validation Error
P1351 Front Ignition Coil Driver Open/Low
P1352 Front Ignition Coil Driver High/Shorted
P1353 Front Cylnder No Combustion
P1354 Rear Ignition Coil Driver Open/Low
P1355 Rear Ignition Coil Driver High/Shorted
P1356 Rear Cylinder No Combustion
P1357 Front Cylinder Combustion Intermittent
P1358 Rear Cylinder Combustion Intermittent
P1475 Exhaust Actuation Position Error
P1477 Exhaust Actuator Open/Low
P1478 Exhaust Actuator Shorted/High
P1501 Jiffy Stand Sensor Low
P1502 Jiffy Stand Sensor High
P1510 EFI Limited Performance Mode
P1511 EFI Power Management Mode
P1512 EFI Forced Idle Mode
P1514 ETC Air Flow Fault/Error
P1600 EFI Module Processor Internal Error / Watchdog Error
P1608 Loss of continuous battery
P1655 ACR solenoid low/open
P1656 ACR solenoid shorted high
P1691 Cooling fan left low/open
P1692 Cooling fan left shorted high
P1693 Cooling fan right low/open
P1694 Cooling fan right shorted high
P2100 EFI Motor Circuit Open
P2101 EFI Motor Circuit Range Performance (Actuation Error)
P2102 EFI Motor Circuit Low
P2103 EFI Motor Circuit High
P2105 EFI Forced engine shutdown
P2107 EFI Module Processor Internal Fault
P2119 EFI Motor Throttle Body RangePerformance
P2122 TGS1 Low/Open
P2123 TGS1 High
P2127 TGS2 Low/Open
P2128 TGS2 High
P2135 TPS Correlation Error
P2138 TGS Correlation Error (Twist grip sensor)
P2176 EFI Closed Position Not Learned
P2184 ECT sensor low
P2185 ECT sensor high
P2300 Ignition coil driver low/open (front)
P2301 Ignition coil driver shorted high (front)
P2303 Ignition coil driver low/open (rear)
P2304 Ignition coil driver shorted high (rear)
List of C Codes
C0562 ABS voltage low
C0563 ABS voltage high
C1014 ABS ECU relay error
C1021 ABS front WSS always zero
C1023 ABS rear WSS always zero
C1025 ABS Front wheel speed intermittent
C1027 ABS rear wheel speed intermittent
C1029 ABS wheel speed difference too high
C1032 ABS Front wheel speed circuit open/shorted
C1034 ABS rear wheel speed circuit open/shorted
C1040 ABS pump/motor error
C1055 ABS ECU internal error
C1061 ABS front apply solenoid circuit open/high resistance
C1062 ABS front release solenoid circuit open/high resistance
C1065 ABS rear apply solenoid circuit open/high resistance
C1066 ABS rear release solenoid circuit open/high resistance
C1071 Rear prime valve error
C1072 Rear isolation valve error
C1073 Front isolation valve error
C1074 Front prime valve error
C1075 Front linked inlet valve error
C1076 Front linked outlet valve error
C1077 Front circuit pressure sensor error
C1078 Rear circuit pressure sensor error
C1081 Front master pressure sensor error
C1082 Front master pressure sensor offset error
C1083 Front wheel pressure sensor error
C1084 Front wheel pressure sensor offset error
C1085 Rear master pressure sensor error
C1086 Rear master pressure offset sensor error
C1087 Rear wheel pressure sensor error
C1088 Rear wheel pressure sensor offset error
C1089 Pressure sensor external supply error
C1159 ABS invalid stored VIN
C1178 ABS no VIN received from ECM
C1184 ABS invalid VIN from ECM
C1195 Wake up error
List of B Codes
B0563 Battery Voltage High
B1103 LHCM Internal error
B1121(HFSM) Left Turn Output Open
B1121(TSM) Left Turn Output Fault
B1122(HFSM) Right Turn Output Open
B1122(TSM) Right Turn Output Fault
B1123(HFSM) Left Turn Output Short to Ground
B1124(HFSM) Right Turn Output Short to Ground
B1125(HFSM) Left Turn Output Short to Battery
B1126(HFSM) Right Turn Output Short to Battery
B1131(HFSM) Alarm Output Low
B1132(HFSM) Alarm Output High
B1134 Starter Output High
B1135 Accelerometer Failed
B1136(HFSM) Accelerometer Tip Test Error
B1141(HFSM) Ignition SwitchLow/Open
B1141(TSM) Ignition SwitchLow/Open
B1142 Smart Security System Internal Fault
B1143(HFSM) Security Antenna Short to Ground
B1144(HFSM) Security Antenna Short to Battery
B1145(HFSM) Security Antenna Open
B1151 Bank Angle Sensor(BAS) Short to Ground
B1152 Bank Angle Sensor(BAS) Short to Battery
B1153 Bank Angle Sensor(BAS) High
B1153 RHCM internal error
B1154 Clutch Switch Input Short to Ground
B1155 Neutral Switch Input Short to Battery
B1200 IM internal fault
B1210 Fuel level sender shorted low/open
B1211 Fuel level sender shorted high
B1212 Fuel signal low
B1213 Fuel signal high
B1300 Radio voltage high
B1301 Radio voltage low
B1302 Face plate home button stuck
B1303 Face plate favorite button stuck
B1304 Face plate navigation button stuck
B1305 Face plate power/mute button stuck
B1306 Rear hand controls shorted high
B1307 Rear hand controls shorted low
B1308 Rear volume up button stuck
B1309 Rear volume down button stuck
B1310 Rear mode button stuck
B1311 Rear PTT button stuck
B1312 Rear tune up button stuck
B1313 Rear tune down button stuck
B1314 LHCM VR button stuck
B1315 LHCM up button stuck
B1316 LHCM left button stuck
B1317 LHCM center button stuck
B1318 LHCM right button stuck
B1319 LHCM down button stuck
B1320 RHCM Info button stuck
B1321 RHCM up button stuck
B1322 RHCM left button stuck
B1323 RHCM center button stuck
B1324 RHCM right button stuck
B1325 RHCM down button stuck
B1326 RHCM CB squelch up button stuck
B1327 RHCM CB PTT button stuck
B1328 RHCM CB squelch down button stuck
B1329 Faceplate preset button 1 stuck
B1330 Faceplate preset button 2 stuck
B1331 Faceplate preset button 3 stuck
B1332 Faceplate preset button 4 stuck
B1333 Faceplate preset button 5 stuck
B1334 Faceplate preset button 6 stuck
B1335 Faceplate preset button 7 stuck
B1336 Faceplate preset button 8 stuck
B1337 Front left speaker shorted together
B1338 Front left speaker open
B1339 Front left speaker shorted low
B1340 Front left speaker shorted high
B1341 Rear left speaker shorted together
B1342 Rear left speaker open
B1343 Rear left speaker shorted low
B1344 Rear left speaker shorted high
B1345 Front right speaker shorted together
B1346 Front right speaker open
B1347 Front right speaker shorted low
B1348 Font right speaker shorted high
B1349 Rear right speaker shorted together
B1350 Rear right speaker open
B1351 Rear right speaker shorted low
B1352 Rear right speaker shorted high
B1353 Speaker offset DC output
B1354 GPS antenna open
B1355 GPS antenna shorted low
B1356 SDARS antenna open
B1357 SDARS antenna shorted
B1358 Front left headset shorted high
B1359 Front right headset shorted high
B1360 Front left headset shorted low
B1361 Front right headset shorted low
B1362 Rear left headset shorted high
B1363 Rear right headset shorted high
B1364 Rear left headset shorted low
B1365 Rear right headset shorted low
B1366 Internal thermal shutdown error
B1401 Amp voltage low
B1402 Amp voltage high
* Amp 1 Amp 2
B1403 Speaker offset DC output *
B1404 Internal thermal shutdown error *
B1405 EQ correlation error
B1406 Invalid or missing EQ
B1410 Channel 1 speaker open *
B1411 Channel 1 speaker shorted low *
B1412 Channel 1 speaker shorted high *
B1413 Channel 1 Speaker shorted together *
B1420 Channel 2 speaker open *
B1421 Channel 2 speaker shorted low *
B1422 Channel 2 speaker shorted high *
B1423 Channel 2 speaker shorted together *
B1430 Channel 3 speaker open *
B1431 Channel 3 speaker shorted low *
B1432 Channel 3 speaker shorted high *
B1433 Channel 3 speaker shorted together *
B1440 Channel 4 speaker open *
B1441 Channel 4 speaker shorted low *
B1442 Channel 4 speaker shorted high *
B1443 Channel 4 speaker shorted together *
B2102 System power output shorted high
B2103 System power output shorted low
B2104 System power output overloaded
B2106 L4 output open
B2107 L4 output shorted high
B2108 L4 output shorted low
B2109 L4 output overloaded
B2112 ACC output shorted high
B2113 ACC output shorted low
B2114 ACC output overloaded
B2116 Fuel pump output open
B2117 Fuel pump output shorted high
B2118 Fuel pump output shorted low
B2119 Fuel pump output overloaded
B2121 Starter output open
B2122 Starter output shorted high
B2123 Starter output shorted low
B2124 Starter output overloaded
B2127 E4 output shorted high
B2128 E4 output shorted low
B2129 E4 output overloaded
B2131 High beam output open
B2132 High beam output shorted high
B2133 High beam output shorted low
B2134 High beam output overloaded
B2136 Low beam output open
B2137 Low beam output shorted high
B2138 Low beam output shorted low
B2139 Low beam output overloaded
B2141 Left front turn signal output open
B2143 Left front turn signal output shorted low
B2144 Left front turn signal output overloaded
B2146 Right front turn signal output open
B2148 Right front turn signal output shorted low
B2149 Right front turn signal output overloaded
B2151 Left rear turn signal output open
B2153 Left rear turn signal output shorted low
B2154 Left rear turn signal output overloaded
B2156 Right rear turn signal output open
B2158 Right rear turn signal output shorted low
B2159 Right rear turn signal output overloaded
B2161 Brake lamp output open
B2163 Brake lamp output shorted low
B2164 Brake lamp output overloaded
B2168 Running lights output shorted low
B2169 Running lights output overloaded
B2172 H2 output shorted high
B2173 H2 output shorted low
B2176 Security antenna output open
B2177 Security antenna output shorted high
B2178 Security antenna output shorted low
B2183 G2 output shorted low
B2188 G3 output shorted low
B2193 H4 output shorted low
B2198 H3 output shorted low
B2201 IGN switch off w/VSS
B2203 Ignition switch input shorted low
B2206 Run/stop switch input open/shorted high
B2208 Run/stop switch input shorted low
B2210 Run/stop switch inputs both open
B2212 Run/stop switch inputs both closed
B2218 Neutral switch shorted low
B2223 Rear brake switch shorted low (light on)
B2226 BAS input open
B2228 BAS input shorted low
B2231 Fork locked/VSS
B2232 Fork lock shorted high
B2233 Fork lock shorted low
B2234 Fork lock detected with option disabled
B2235 Fork lock configuration invalid
B2250 Clutch switch stuck
B2251 Horn switch stuck
B2253 FTP switch stuck
B2254 Left turn switch stuck
B2255 Trip switch stuck
B2256 LHCM Police siren power stuck
B2257 LHCM Police siren wail power stuck
B2258 LHCM police siren yelp stuck
B2260 Start switch stuck
B2261 Right turn switch stuck
B2262 Front brake switch stuck
B2263 Hazard switch stuck
B2264 RHCM police lights power switch stuck
B2265 RHCM police lights front switch stuck
B2266 RHCM police lights rear switch stuck
B2267 RHCM police ICR switch stuck
B2270 BCM internal error
B2271 BCM voltage low
B2272 BCM/IM voltage high
B2274 Constant battery line error
List of U Codes
U0001 CAN BUS error
U0002 CAN comm bus perf error
U0003 Network management monitoring
U0100 Lost comm w/ECM
U0121 Lost comm W/ABS
U0140 Lost comm W/BCM
U0141 Lost comm w/LHCM
U0142 Lost comm w/RHCM
U0156 Lost comm w/SPEEDO
U0158 Lost comm w/fuel gauge
U0159 Lost comm w/volt gauge
U0160 Lost comm w/ fuel and volt gauge
U0184 Lost comm w/radio
U0185 Lost comm w/Amp 1
U0186 Lost comm w/ AMP 2
U1016 Loss of ECM Serial Data
U1064 Loss of TSM/FSFM Serial Data to ECM
U1097 Loss of SpeedometerSerial Data to ECM
U1255 Serial Data Error
U1300 ECM Serial Data Low
U1300 Serial Data Low
U1301 ECM Serial Data High
U1301 Serial Data High
U1302 ACC bus perf error
U1401 Lost com w/CB
How do I get Harley Trouble codes?
One of the unique features of Harley-Davidson® motorcycle is the ability to display codes right on the dash, no tool required! This makes it easy to diagnose any problems that may arise. To enter the diagnostic system and retrieve a trouble code, hold down the trip reset button.
How do you read a Harley Davidson engine code?
To get the DTC within an area of diagnostics, push and hold the odometer reset button in for 5 seconds and release. If there are any DTC’s the code will be shown on the display. The diagnostic trouble codes (DTC) can help with troubleshooting problems with your motorcycle. The Harley trouble codes will be displayed as a letter and a number. For Harley Davidson motorcycles, there are two types of codes- engine and ABS/DSC. To clear the codes, push and hold the odometer reset button in for 5 seconds and release.