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
- Signal error DTCs
DRIVER'S MICU
| DTC | Description | DTC Type |
|---|---|---|
| B1036 | Driver's MICU IG1 line input error | Signal error |
| B1077 | Wiper auto-stop (As) signal circuit malfunction | Signal error |
| B10A2 | Driver's MICU internal (EEPROM) error | Internal error |
| B10CF | Left daytime running lights circuit malfunction | Signal error |
| B1275 | Headlight switch OFF position circuit malfunction | Signal error |
| B1276 | Headlight light 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 | Driver's MICU lost communication with gauge control module | Loss of communication |
| U0199 | Driver's MICU lost communication with door multiplex control unit | Loss of communication |
| U1280 | Communication bus line error (BUS-OFF) | Loss of communication |
| U1283 | Driver's MICU lost communication with passenger's MICU | Loss of communication |
PASSENGER'S MICU
| DTC | Description | DTC Type |
|---|---|---|
| B11A2 | Passenger's MICU internal (EEPROM) error | Internal error |
| B11C7 | Passenger's MICU IG1 line input error | Signal error |
| B11CF | Right daytime running lights circuit malfunction | Signal error |
| B1575 | Auto lighting sensor malfunction | Signal error |
| U0155 | Passenger's MICU lost communication with gauge control module | Loss of communication |
| U1280 | Communication bus line error (BUS-OFF) | Loss of communication |
| U1282 | Passenger's MICU lost communication with driver's MICU | 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 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 |
| B1142 | Door multiplex control unit lost communication with other unit (UART communication error) | Loss of communication |
| B1145 | Front passenger's power window position detect circuit malfunction | Loss of communication |
| 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 bus line error (BUS-OFF) | Loss of communication |
| U1282 | Door multiplex control unit lost communication with driver's MICU | Loss of communication |
| U1283 | Door multiplex control unit lost communication with passenger's MICU | Loss of communication |
IMMOBILIZER-KEYLESS CONTROL UNIT
| DTC | Description | DTC Type |
|---|---|---|
| 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 |
| U1280 | Communication bus line error (BUS-OFF) | Loss of communication |
| U1282 | Immobilizer-keyless control unit lost communication with driver's MICU | Loss of communication |
GAUGE CONTROL MODULE
| DTC | Description | DTC Type |
|---|---|---|
| B1152 | Gauge control module internal (EEPROM) error | Internal error |
| B1175 | Fuel level sensor (Fuel gauge sending unit) circuit malfunction | Signal error |
| B1176 | Fuel level sensor (Fuel gauge sending unit) circuit short | Signal error |
| B1192 | Gauge control module lost communication with battery sensor (UART line) | Loss of communication |
| U0029 | F-CAN communication line error (BUS OFF) | Loss of communication |
| U0100 | Gauge control module lost communication with ECM/PCM | Loss of communication |
| U0122 | Gauge control module lost communication with VSA modulator-control unit (VSA message) | Loss of communication |
| U0127 | Gauge control module lost communication with the TPMS control unit (TPMS message) | Loss of communication |
| U0131 | Gauge control module lost communication with EPS control unit (EPS message) | Loss of communication |
| U0151 | Gauge control module lost communication with SRS unit (SRS message) | Loss of communication |
| U0164 | Gauge control module lost communication with climate control unit | Loss of communication |
| U0199 | Gauge control module lost communication with door multiplex control unit | Loss of communication |
| U1280 | Communication bus line error (BUS-OFF) | Loss of communication |
| U1282 | Gauge control module lost communication with driver's MICU | Loss of communication |
| U1283 | Gauge control module lost communication with passenger's MICU | Loss of communication |
| U1286 | Gauge control module lost communication with keyless access control unit | Loss of communication |
| U1289 | Gauge control module lost communication with remote slot control unit | Loss of communication |
| U128B | Gauge control module lost communication with power control unit | Loss of communication |
| U128F | Gauge control module lost communication with BSI control unit (BSI message) | Loss of communication |
HANDSFREELINK CONTROL UNIT
| DTC | Description | DTC Type |
|---|---|---|
| B1775 | Microphone input/output shorted to power or open (with navigation) | Signal error |
| Microphone input/output shorted to power or open (without navigation) | Signal error | |
| B1776 | Microphone input/output shorted to ground (with navigation) | Signal error |
| Microphone input/output shorted to ground (without navigation) | Signal error | |
| B1779 | HandsFreeLink steering wheel switch failure (with navigation) | Signal error |
| HandsFreeLink steering wheel switch failure (without navigation) | Signal error | |
| B1780 | HandsFreeLink steering wheel switch line short (with navigation) | Signal error |
| HandsFreeLink steering wheel switch line short (without navigation) | Signal error | |
| B1792 | HandsFreeLink control unit error (with navigation) | Signal error |
| HandsFreeLink control unit error (without navigation) | Signal error | |
| U1280 | Communication bus line error (BUS-OFF) | Loss of communication |
CLIMATE CONTROL UNIT
| DTC | Description | DTC Type |
|---|---|---|
| U1280 | Communication bus line error (BUS-OFF) | Loss of communication |
| U0155 | Lost communication with gauge control module (climate control unit) | Loss of communication |
| B1215 | An open or short in the recirculation control 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 evaporator temperature sensor circuit | Signal error |
| B1232 | A short in the evaporator temperature sensor circuit | Signal error |
| B1233 | An open in the air mix control motor circuit (driver's) | Signal error |
| B1234 | A short in the air mix control motor circuit (driver's) | Signal error |
| B1235 | A problem in the air mix control motor circuit, linkage, door, or motor (driver's) | 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 | Signal error |
| B1239 | An open or short in the mode control motor circuit (driver's) | Signal error |
| B1240 | A problem in the mode control motor circuit, linkage, doors, or motor (driver's) | Signal error |
| B1241 | A problem in the blower motor circuit | Signal error |
| B1242 | An open or short in the passenger's mode control motor circuit | Signal error |
| B1243 | A problem in the passenger's mode control motor circuit, linkage, doors, or motor | Signal error |
| B2967 | An open in the humidity sensor circuit | Signal error |
| B2968 | A short in the humidity sensor circuit | Signal error |
| B2969 | Climate control unit lost communication with driver's MICU (WIPSW message) | 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 motor circuit, linkage, door, or motor | Signal error |
ACURALINK CONTROL UNIT
| DTC | Description | DTC Type |
|---|---|---|
| B2240 | XM antenna error | Internal error |
| U0100 | F-CAN lost communication with ECM/PCM | Loss of communication |
| U0155 | Gauge control module lost F-CAN communication with AcuraLink control unit (XM receiver) | Loss of communication |
| U1280 | Communication bus line error (BUS-OFF) | Loss of communication |
| U128D | AcuraLink control unit (XM receiver) lost B-CAN 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 | A/T-P signal and VSP signal mismatch | Signal error |
| B1830 | Left mirror position sensor open | Signal error |
| B1832 | Right mirror position 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 | Loss of communication |
| U0199 | Power seat control unit lost communication with door multiplex control unit | Loss of communication |
| U1280 | Communication bus line error (BUS-OFF) | Loss of communication |
| U1282 | Power seat control unit lost communication with driver's MICU | Loss of communication |
POWER CONTROL UNIT
| DTC | Description | DTC Type |
|---|---|---|
| B12A1 | Power control unit internal (CPU) error | Internal error |
| B12C5 | Engine start/stop switch failure | Internal error |
| B12C6 | Electric steering lock switch C/D monitor circuit failure | Internal error |
| B12C7 | Electric steering lock motor circuit failure | Internal error |
| B12D0 | Power control unit IG1A circuit error | Internal error |
| B12D1 | Power control unit IG1B circuit error | Internal error |
| B12D2 | Power control unit IG2 circuit error | Internal error |
| B12D3 | Power control unit IG latch circuit error | Internal error |
| B12E0 | Electric steering lock switch internal error | Internal error |
| B12E1 | Electric steering lock motor internal error | Internal error |
| B12E2 | Electric steering lock low level failure of MTRCUT1 | Signal error |
| B12E3 | Electric steering lock high level failure of MTRCUT1 | Signal error |
| B12E4 | Electric steering lock high level failure of MTRCUT2 | Signal error |
| B12F0 | Power control unit lost communication with electric steering lock | Loss of communication |
| B12F1 | Power control unit lost communication with remote slot control unit | Loss of communication |
| B12F2 | Power control unit lost communication with keyless access control unit | Loss of communication |
| U0155 | Power control unit lost communication with gauge control module | Loss of communication |
| U0199 | Power control unit lost communication with door multiplex control unit | Loss of communication |
| U1280 | Communication bus line error (BUS-OFF) | Loss of communication |
REMOTE SLOT CONTROL UNIT
| DTC | Description | DTC Type |
|---|---|---|
| B1902 | Remote slot control unit internal error (EEPROM error) | Internal error |
| B1926 | Remote slot antenna open or short | Internal error |
| B1927 | MTRCONT signal error | Signal error |
| B1930 | Remote slot control unit LOCK/UNLOCK error | Signal error |
| B1931 | Remote slot control unit no response | Signal error |
| U0155 | Remote slot control unit lost communication with gauge control module | Loss of communication |
| U1280 | Communication bus line error (BUS-OFF) | Loss of communication |
KEYLESS ACCESS CONTROL UNIT
| DTC | Description | DTC Type |
|---|---|---|
| B1601 | Keyless access control unit internal (CPU) error | Internal error |
| B1602 | Keyless access control unit internal (EEPROM) error | Internal error |
| B1640 | RF unit not connected | Signal error |
| B1646 | Driver's door LF antenna circuit open or short | Signal error |
| B1648 | Passenger's door LF antenna circuit open or short | Signal error |
| B1658 | Rear bumper LF antenna circuit open or short | Signal error |
| B1660 | Front interior LF antenna circuit open or short | Signal error |
| B1664 | Rear interior LF antenna circuit open or short | Signal error |
| B1668 | Rear shelf LF antenna circuit open or short | Signal error |
| U0155 | Keyless access control unit lost communication with gauge control module | Loss of communication |
| U0199 | Keyless access control unit lost communication with door multiplex control unit | Loss of communication |
| U1280 | Communication bus line error (BUS-OFF) | Loss of communication |
| U1282 | Keyless access control unit lost communication with driver's MICU | Loss of communication |
| U1283 | Keyless access control unit lost communication with passenger's MICU | Loss of communication |
BSI CONTROL UNIT
| DTC | Description | DTC Type |
|---|---|---|
| B18A1 | BSI control unit internal circuit error | Internal error |
| B18A5 | Left BSI radar unit temperature high | Signal error |
| B18A6 | Right BSI radar unit temperature high | Signal error |
| B18A7 | Left BSI radar unit voltage input low | Signal error |
| B18A8 | Right BSI radar unit voltage input low | Signal error |
| B18A9 | Left BSI radar unit voltage input high | Signal error |
| B18AA | Right BSI radar unit voltage input high | Signal error |
| B18AF | Left BSI radar unit internal circuit error | Internal error |
| B18B1 | Right BSI radar unit internal circuit error | Internal error |
| B18B4 | Left BSI radar unit dirty | Signal error |
| B18B5 | Right BSI radar unit dirty | Signal error |
| B18B6 | Lost communication with left BSI radar unit | Loss of communication |
| B18B7 | Lost communication with right BSI radar unit | Loss of communication |
| B18B8 | Left BSI radar unit azimuth off alignment | Signal error |
| B18B9 | Right BSI radar unit azimuth off alignment | Signal error |
| B18BA | Left BSI radar unit version incorrect | Signal error |
| B18BB | Right BSI radar unit version incorrect | Signal error |
| B18BC | BSI radar units communication error | Signal error |
| B18BD | BSI control unit voltage input high | Signal error |
| B18BE | BSI control unit voltage input low | Signal error |
| B18C2 | Left BSI alert indicator output error | Signal error |
| B18CF | Right BSI alert indicator output error | Signal error |
| U0155 | Lost communication with the gauge control module | Loss of communication |
| U0423 | Invalid data received from PCM (vehicle speed data) | Loss of communication |
| U1280 | Communication circuit error (BUS-OFF) | Loss of communication |