DTC Troubleshooting Index
NOTE:
Record all DTCs, and sort them by DTC type using the following DTC troubleshooting indexes, then troubleshoot the DTC(s) in this order:
- Battery voltage DTCs
- Internal error DTCs
- Loss of communication DTCs (beginning with the lowest number first; for example, if B1036 and B1037 are retrieved, troubleshoot B1036 first).
- Signal error DTCs
MICU
| DTC | Description | DTC Type |
|---|---|---|
| B1002 | MICU internal error (EEPROM error) | Internal error |
| B1036 | IG1 power supply circuit malfunction | Signal error |
| B1037 | Rear wiper rise/ret switch no signal change | Signal error |
| B1077 | Windshield wiper motor (park) signal error | Signal error |
| B1079 | Daytime running light for America circuit malfunction | Signal error |
| B1275 | Headlight OFF position circuit malfunction | Signal error |
| B1276 | Headlight switch PARKING position circuit malfunction | Signal error |
| B1277 | Headlight AUTO position circuit malfunction | Signal error |
| B1278 | Headlight ON position circuit malfunction | Signal error |
| B1279 | Dimmer switch circuit malfunction | Signal error |
| B1280 | Turn signal switch circuit malfunction | Signal error |
| B1281 | Front wiper MIST position circuit malfunction | Signal error |
| B1282 | Front wiper INT (AUTO) position circuit malfunction | Signal error |
| B1283 | Front wiper LOW position circuit malfunction | Signal error |
| B1284 | Front wiper HIGH position circuit malfunction | Signal error |
| U0155 | MICU lost communication with gauge control module | Loss of communication |
| U0199 | MICU lost communication with power window master switch | Loss of communication |
| U1280 | Communication circuit error (BUS-OFF) | Loss of communication |
IMMOBILIZER-KEYLESS CONTROL UNIT
| DTC | Description | DTC Type |
|---|---|---|
| B1901 | Immobilizer unit internal error (CPU error) | Internal error |
| B1902 | Immobilizer unit internal error (EEPROM error) | Internal error |
| U1280 | Communication circuit error (BUS-OFF) | Loss of communication |
| U1282 | Immobilizer-keyless control unit lost communication with MICU | Loss of communication |
| U0155 | Immobilizer-keyless control unit lost communication with gauge control module | Loss of communication |
| U0199 | Immobilizer-keyless control unit lost communication with door multiplex control unit | Loss of communication |
DOOR MULTIPLEX CONTROL UNIT
| DTC | Description | DTC Type |
|---|---|---|
| B1125 | Driver's power window motor A pulse malfunction | Signal error |
| B1126 | Driver's power window motor B pulse malfunction | Signal error |
| B1127 | Driver's door lock key cylinder switch malfunction | Signal error |
| B1128 | Driver's door lock switch malfunction | Signal error |
| B1129 | Driver's door lock knob switch malfunction | Signal error |
| B1130 | Front passenger's power window motor A pulse malfunction | Signal error |
| B1131 | Front passenger's power window motor B pulse malfunction | Signal error |
| B1140 | Driver's power window position detect circuit malfunction | Signal error |
| DTC B1142 | Door multiplex control unit lost communication with front passenger's power window switch (UART line open) | Loss of communication |
| B1145 | Front passenger's power window position detect circuit malfunction | Signal error |
| U0155 | Door multiplex control unit lost communication with gauge control module | Loss of communication |
| U0164 | Door multiplex control unit lost communication with climate control unit | Loss of communication |
| U1280 | Communication circuit error (BUS-OFF) | Loss of communication |
| U1282 | Door multiplex control unit lost communication with MICU | Loss of communication |
GAUGE CONTROL MODULE
| DTC | Description | DTC Type | ||||
|---|---|---|---|---|---|---|
| B1152 | Gauge control module internal (EEPROM) error | Internal error | ||||
| B1175(1) | Fuel level sensor (fuel gauge sending unit) circuit malfunction | Signal error | ||||
| B1175(2) | Fuel level sensor (fuel gauge sending unit) circuit malfunction | Signal error | ||||
| B1176(1) | Fuel level sensor (fuel gauge sending unit) circuit short | Signal error | ||||
| B1176(2) | Fuel level sensor (fuel gauge sending unit) circuit short | Signal error | ||||
| U0029 | F-CAN communication line error | Loss of communication | ||||
| U0100 | Gauge control module lost communication with ENG/AT | Loss of communication | ||||
| DTC U0122 | Gauge control module lost communication with VSA modulator-control unit | Loss of communication | ||||
| DTC U0127 | Gauge control module lost communication with TPMS control unit | Loss of communication | ||||
| U0151 | Gauge control module lost communication with SRS unit | Loss of communication | ||||
| U0164 | Gauge control module lost communication with A/C | Loss of communication | ||||
| U0180 | Gauge control module lost communication with AUTOLT unit | Loss of communication | ||||
| U0230 | Gauge control module lost communication with PTG | Loss of communication | ||||
| U1280 | Communication circuit error (BUS-OFF) | Loss of communication | ||||
| U1281 | Gauge control module lost communication with MICU (MICU frame) | Loss of communication | ||||
| U1288 | Gauge control module lost communication with PARKSR | Loss of communication | ||||
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CLIMATE CONTROL UNIT
| DTC | Detection Item or Symptom | DTC type |
|---|---|---|
| U1280 | Communication bus line error (BUS-OFF) | Loss of communication |
| U1281 | Climate Control Unit Lost Communication with MICU (WIPSW message) | Loss of communication |
| U128D | Climate Control Unit Lost Communication with gauge control module (climate control unit) | Loss of communication |
| B1213 | An open in the rear evaporator temperature sensor circuit | Signal error |
| B1214 | A short in the rear evaporator temperature sensor circuit | Signal error |
| B1215 | An open or short in the recirculation control motor circuit | Signal error |
| B121D | Hum-Temp sensor communication error (An open or short in the humidity sensor circuit) | Loss of communication |
| B1223 | A problem in the rear blower motor circuit | Signal error |
| B1225 | An open in the in-car temperature sensor circuit | Signal error |
| B1226 | A short in the in-car temperature sensor circuit | Signal error |
| B1227 | An open in the outside air temperature sensor circuit | Signal error |
| B1228 | A short in the outside air temperature sensor circuit | Signal error |
| B1229 | An open in the sunlight sensor circuit | Signal error |
| B1230 | A short in the sunlight sensor circuit | Signal error |
| B1231 | An open in the front evaporator temperature sensor circuit | Signal error |
| B1232 | A short in the front evaporator temperature sensor circuit | Signal error |
| B1233 | An open in the driver's air mix control motor circuit | Signal error |
| B1234 | A short in the driver's air mix control motor circuit | Signal error |
| B1235 | A problem in the driver's air mix control linkage, door, or motor circuit | Signal error |
| B1236 | An open in the passenger's air mix control motor circuit | Signal error |
| B1237 | A short in the passenger's air mix control motor circuit | Signal error |
| B1238 | A problem in the passenger's air mix control linkage, door, or motor circuit | Signal error |
| B1239 | An open or short in the front mode control motor circuit | Signal error |
| B1240 | A problem in the front mode control linkage, doors, or motor circuit | Signal error |
| B1241 | A problem in the front blower motor circuit | Signal error |
| B1244 | An open in the rear air mix control motor circuit | Signal error |
| B1245 | A short in the rear air mix control motor circuit | Signal error |
| B1246 | A problem in the rear air mix control linkage, door, or motor circuit | Signal error |
| B2965 | Climate control unit lost communication with rear climate control panel | Loss of communication |
| B2967 | An open in the humidity sensor circuit | Signal error |
| B2968 | A short in the humidity sensor circuit | Signal error |
| B2979 | An open in the A/C pressure sensor circuit | Signal error |
| B2980 | A short in the A/C pressure sensor circuit | Signal error |
| B2983 | A problem in the recirculation control linkage, door, or motor circuit | Signal error |
HVAC CONTROL UNIT
| DTC | Detection Item or Symptom | DTC type |
|---|---|---|
| U1280 | Communication bus line error (BUS-OFF) | Loss of communication |
| U128D | Lost Communication with Gauge Control Module (HVAC Control Unit) | Loss of communication |
| B1215 | An open or short in the recirculation control motor circuit | Signal error |
| B1223 | A problem in the rear blower motor circuit | Signal error |
| B1227 | An open in the outside air temperature sensor circuit | Signal error |
| B1228 | A short in the outside air temperature sensor circuit | Signal error |
| B1231 | An open in the evaporator temperature sensor circuit | Signal error |
| B1232 | A short in the evaporator temperature sensor circuit | Signal error |
| B1233 | An open in the front air mix control motor circuit | Signal error |
| B1234 | A short in the front air mix control motor circuit | Signal error |
| B1235 | A problem in the front air mix control linkage, door, or motor circuit | Signal error |
| B1239 | An open or short in the front mode control motor circuit | Signal error |
| B1240 | A problem in the front mode control linkage, doors, or motor circuit | Signal error |
| B1241 | A problem in the front blower motor circuit | Signal error |
| B1244 | An open in the rear air mix control motor circuit | Signal error |
| B1245 | A short in the rear air mix control motor circuit | Signal error |
| B1246 | A problem in the rear air mix control linkage, door, or motor circuit | Signal error |
| B2965 | HVAC control unit lost communication with rear HVAC control panel | Loss of communication |
| B2979 | An open in the A/C pressure sensor circuit | Signal error |
| B2980 | A short in the A/C pressure sensor circuit | Signal error |
| B2983 | A problem in the recirculation control linkage, door, or motor circuit | Signal error |
AUTOMATIC LIGHTING CONTROL UNIT
| DTC | Description | DTC Type |
|---|---|---|
| B1552 B1552 | Auto light control unit EEPROM error | Internal error |
| B1575 | Auto light sensor error | Signal error |
| U1280 | Communication circuit error (BUS-OFF) | Loss of communication |
| U1281 | Auto light control unit lost communication with MICU | Loss of communication |
| U128D | Auto light control unit lost communication with gauge control module | Loss of communication |
POWER SEAT CONTROL UNIT
| DTC | Description | DTC Type |
|---|---|---|
| B1802 | Power seat control unit failure | Internal error |
| B1825 | Power seat slide motor pulse error | Signal error |
| B1826 | Power seat front up-down motor pulse error | Signal error |
| B1827 | Power seat rear up-down motor pulse error | Signal error |
| B1828 | Power seat recline motor pulse error | Signal error |
| B1829 | AT-P signal and VSP signal mismatch | Signal error |
| B1830 | Right mirror horizontal sensor open | Signal error |
| B1832 | Left mirror horizontal sensor open | Signal error |
| B1836 | Power seat position sensor circuit short | Signal error |
| B1837 | Memory position calling timeout | Signal error |
| B1843 | UART communication error | Signal error |
| B1844 | Power seat slide switch circuit malfunction | Signal error |
| B1845 | Power seat recline switch circuit malfunction | Signal error |
| B1846 | Power seat front up-down switch circuit malfunction | Signal error |
| B1847 | Power seat rear up-down switch circuit malfunction | Signal error |
| U0155 | Power seat control unit lost communication with gauge control module (VSP/NE frame) | Loss of communication |
| U0199 | Power seat control unit lost communication with door multiplex control unit (DRLockSW frame) | Loss of communication |
| U1280 | Communication circuit error (BUS-OFF) | Loss of communication |
| U1282 | Power seat control unit lost communication with MICU | Loss of communication |
PARKING AND BACK-UP SENSOR CONTROL UNIT
| DTC | Description | DTC Type |
|---|---|---|
| B2601 | Parking sensor CPU error | Internal error |
| B2602 | Parking sensor EEPROM error | Internal error |
| B2625 | Left front sensor failure | Signal error |
| B2628 | Right front sensor failure | Signal error |
| B2629 | Left rear sensor failure | Signal error |
| B2630 | Center left rear sensor failure | Signal error |
| B2631 | Center right rear sensor failure | Signal error |
| B2632 | Right rear sensor failure | Signal error |
| B2633 | Front bus failure | Signal error |
| B2634 | Rear bus failure | Signal error |
| B2635 | IND erroneous lighting | Signal error |
| B2636 | Vehicle status combination error | Signal error |
| U0155 | Parking and back-up sensor control unit lost communication with gauge control module | Loss of communication |
| U1280 | Communication circuit error (BUS-OFF) | Loss of communication |
| U1282 | Parking and back-up sensor control unit lost communication with MICU | Loss of communication |
POWER TAILGATE CONTROL UNIT
| DTC | Description | DTC Type |
|---|---|---|
| B1352 | Power tailgate control unit internal error (EEPROM error) | Internal error |
| B1375 | Driver's side PTG switch circuit malfunction | Signal error |
| B1376 | Tailgate outer handle switch circuit malfunction | Signal error |
| B1377 | Power tailgate inner switch circuit malfunction | Signal error |
| B1378 | Power tailgate right touch/pinch sensor circuit malfunction | Signal error |
| B1379 | Power tailgate left touch/pinch sensor circuit malfunction | Signal error |
| B1380 | Tailgate closer unit neutral switch circuit malfunction | Signal error |
| B1381 | Tailgate closer unit release switch circuit malfunction | Signal error |
| B1382 | Tailgate closer unit full latch switch circuit malfunction | Signal error |
| B1383 | Tailgate closer unit ratchet switch circuit malfunction | Signal error |
| B1384 | Tailgate closer unit half latch switch circuit malfunction | Signal error |
| B1386 | Power tailgate sensor pulse A circuit malfunction | Signal error |
| B1387 | Power tailgate sensor pulse B circuit malfunction | Signal error |
| B1388 | Power tailgate drive motor circuit malfunction | Signal error |
| B1389 | Power tailgate motor clutch circuit malfunction | Signal error |
| B1390 | Power tailgate closer motor function error | Signal error |
| U0155 | Power tailgate control unit lost communication with gauge control module (VSP/NE, AT frame) | Loss of communication |
| U0199 | Power tailgate control unit lost communication with PA/V (DRLOCKSW, KLDRLOCK frame) | Loss of communication |
| U1280 | Communication circuit error (BUS-OFF) | Loss of communication |
| U1281 | Power tailgate control unit lost communication with MICU (MICU frame) | Loss of communication |
SEAT HEATER CONTROL UNIT
| DTC | Description | DTC Type |
|---|---|---|
| B1C55 | Driver's heater thermistor circuit open | Signal error |
| B1C56 | Driver's heater thermistor circuit short | Signal error |
| B1C57 | Passenger's heater thermistor circuit open | Signal error |
| B1C58 | Passenger's heater thermistor circuit short | Signal error |
| B1C60 | Driver's heater current abnormal high | Signal error |
| B1C61 | Driver's heater current abnormal low | Signal error |
| B1C62 | Passenger's heater current abnormal high | Signal error |
| B1C63 | Passenger's heater current abnormal low | Signal error |
| B1C68 | Driver's heater not heating | Signal error |
| B1C69 | Passenger's heater not heating | Signal error |
| B1C70 | Driver's main heater switch failure | Signal error |
| B1C71 | Passenger's main heater switch failure | Signal error |
| U1064 | Seat heater control unit lost communication with climate control unit | Loss of communication |
| U1280 | Communication circuit error (BUS-OFF) | Loss of communication |