Network Communication DTC Troubleshooting Index
NOTE: Record all DTCs, and sort them by DTC type using the DTC troubleshooting index, then troubleshoot the DTC (s) in this order:
- Internal error DTCs
- Loss of communication DTCs
- Signal error DTCs
Acoustic Vehicle Alerting Control Unit
| DTC | Description | DTC type |
|---|---|---|
| B2890-13 | An open in the acoustic vehicle alerting speaker circuit | Signal error |
| U0029-00 | F-CAN communication line error | Loss of communication |
| U0100-00 | Acoustic vehicle alerting control unit lost communication with PCM | Loss of communication |
| U0101-00 | Acoustic vehicle alerting control unit lost communication with PCM/TCM | Loss of communication |
| U0122-00 | Acoustic vehicle alerting control unit lost communication with VSA modulator-control unit | Loss of communication |
Automatic Lighting Control Unit-Sensor
| DTC | Description | DTC type |
|---|---|---|
| B1575 | Auto light sensor error | Internal error |
| U1280 | B-CAN communication bus line error (BUS-OFF) | Loss of communication |
| U1281 | Auto light control unit lost communication with MICU (body control module) | Loss of communication |
| U128D | Auto light control unit lost communication with gauge control module | Loss of communication |
Automatic Lighting/Rain Sensor
| DTC | Description | DTC type |
|---|---|---|
| B2352 | Rain light sensor unit internal error (EEPROM error) | Internal error |
| B2375 | Rain sensor malfunction | Internal error |
| B2376 | Light sensor malfunction | Internal error |
| U1280 | B-CAN communication bus line error (BUS-OFF) | Loss of communication |
| U1281 | Rain Light Sensor Unit lost communication with MICU | Loss of communication |
| U128D | Rain Light Sensor Unit lost communication with gauge control module | Loss of communication |
Body Control Module
| DTC | Description | DTC type |
|---|---|---|
| B1002 | BCM internal error (EEPROM error) | Internal error |
| B1003 | BCM Update error | Internal error |
| B1036 | IG1 Power supply Circuit Malfunction | Signal error |
| B1038 | IMMOBILIZER F-CAN Authentication ID Not Received | Signal error |
| B1039 | IMMOBILIZER F-CAN Authentication ID Unmatch | Signal error |
| B1040 | BCM lost communication with Front wiper | Loss of communication |
| B1041 | Front Wiper motor malfunction | Signal error |
| B1042 | Front Wiper security line error | Signal error |
| B1043 | Front Wiper unit internal error (EEPROM error) | Signal error |
| B1077 | Front wiper auto stop switch signal error | Signal error |
| B1275 | Head light OFF position Circuit Malfunction | Signal error |
| B1276 | Headlight Switch Parking (Small) Position Circuit Malfunction | Signal error |
| B1277 | Head light AUTO position Circuit Malfunction | Signal error |
| B1278 | Head light ON position Circuit Malfunction | Signal error |
| B1279 | Dimmer switch Circuit Malfunction | Signal error |
| B1280 | Turn signal switch Circuit Malfunction | Signal error |
| DTC | Description | DTC type |
|---|---|---|
| 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 |
| U0073 | F-CAN communication bus line error (BUS-OFF) | Loss of communication |
| U0100 | BCM lost communication with ECM/PCM | Loss of communication |
| U0122 | BCM lost communication with VSA/ABS | Loss of communication |
| U1280 | B-CAN communication bus line error (BUS-OFF) | Loss of communication |
| U128D | BCM lost communication with gauge control module | Loss of communication |
| U1291 | BCM lost communication with relay control module | Loss of communication |
Front 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 | Seat heater control unit communication bus line error (BUS-OFF) | Loss of communication |
Gauge Control Module
| DTC | Description | DTC type |
|---|---|---|
| B1175 | Fuel level sensor (Fuel gauge sending unit) circuit malfunction | Signal error |
| B1176 | Fuel level sensor (Fuel gauge sending unit) circuit short | Signal error |
| B1193 | Gauge control module lost communication with Steering Switch (LIN bus connected) | Loss of communication |
| U0029 | F-CAN communication line error | Loss of communication |
| U0100 | Gauge control module lost communication with ENG/AT | Loss of communication |
| U0101 | Gauge control module lost communication with AT | Loss of communication |
| U0104 | Gauge Control Module Lost Communication With Driving Support System Control Unit | Loss of communication |
| U0111 | Gauge control module lost communication with Battery Condition Monitor Module | Loss of communication |
| U0122 | Gauge control module lost communication with VSA modulator-control unit | Loss of communication |
| U0128 | Gauge control module lost communication with EPB | Loss of communication |
| U0131 | Gauge control module lost communication with EPS Unit | Loss of communication |
| U0151 | Gauge control module lost communication with SRS unit | Loss of communication |
| U1280 | B-CAN communication bus line error (BUS-OFF) | Loss of communication |
| U1281 | Gauge control module lost communication with MICU (body control module) (MICU frame) | Loss of communication |
| U128F | Gauge control module lost communication with BSI unit | Loss of communication |
| U129C | Gauge control module lost communication with multi purpose camera unit | Loss of communication |
| U12A0 | Gauge control module lost communication with Acoustic Vehicle Alert System (AVAS) | Loss of communication |
| U3000-49 | ECU internal circuit malfunction | Internal error |
| DTC | Description | DTC type |
|---|---|---|
| U3000-51 | Reprogramming error | Internal error |
Keyless Access Backup Control Unit (Body Control Module)
| DTC | Description | DTC type |
|---|---|---|
| B1926 | Backup Control Antenna Open or Short | Internal error |
| U1280 | B-CAN communication bus line error (BUS-OFF) | Loss of communication |
| U128D | Backup Control Unit Lost Communication with Gauge Control Module | Loss of communication |
Keyless Access Control Unit (Body Control Module)
| 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 | RF1 antenna not connected or malfunction | Signal error |
| B1645 | Driver's Door LF Antenna Circuit Short | Signal error |
| B1646 | Driver's Door LF Antenna Circuit Open | Signal error |
| B1647 | Passenger's Door LF Antenna Circuit Short | Signal error |
| B1648 | Passenger's Door LF Antenna Circuit Open | Signal error |
| B1657 | Rear Bumper LF Antenna Circuit Short | Signal error |
| B1658 | Rear Bumper LF Antenna Circuit Open | Signal error |
| B1659 | Front Interior LF Antenna Circuit Short | Signal error |
| B1660 | Front Interior LF Antenna Circuit Open | Signal error |
| B1663 | Rear Interior LF Antenna Circuit Short | Signal error |
| B1664 | Rear Interior LF Antenna Circuit Open | Signal error |
| B1667 | Rear Shelf LF Antenna Circuit Short | Signal error |
| B1668 | Rear Shelf LF Antenna Circuit Open | Signal error |
| U1280 | Keyless access control unit communication bus line error (BUS-OFF) | Loss of communication |
| U128D | Keyless Access Control Unit Lost Communication with Gauge Control Module | Loss of communication |
Keyless Access Power Control Unit (Body Control Module)
| DTC | Description | DTC type |
|---|---|---|
| B12C5 | Engine Start/Stop Switch (Power Switch) Failure | Signal 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 |
| B12D4 | Starter request output circuit malfunction | Internal error |
| B12E5 | Incorrect assembly of control unit for electric steering lock equipped vehicle | Signal error |
| B12F3 | Power Control Unit Lost Communication with Transmission Control Unit | Loss of communication |
| U0073 | F-CAN Communication Bus Line Error | Loss of communication |
| U0100 | Power Control Unit Lost Communication with PCM | Loss of communication |
| U0122 | Power Control Unit Lost Communication with ABS/VSA Modulator-Control Unit | Loss of communication |
| U1280 | B-CAN communication bus line error (BUS-OFF) | Loss of communication |
| U128D | Power Control Unit Lost Communication with Gauge Control Module | Loss of communication |
Multiplex Control Unit, Door (Power Window Master Switch)
| 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 |
| DTC | Description | DTC type |
|---|---|---|
| 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-phase pulse signal input error | Signal error |
| B1131 | Front passenger's power window motor B-phase pulse signal input error | Signal error |
| B1140 | Driver's power window position detect circuit malfunction | Signal error |
| B1142 | Power Window Master Switch lost communication with the other units (UART communication error) | Loss of communication |
| B1145 | Front passenger's window position detect circuit malfunction | Signal error |
| U1280 | Communication bus line error (BUS-OFF) | Loss of communication |
| U1281 | Power Window Master Switch lost communication with MICU (body control module) | Loss of communication |
| U128D | Power Window Master Switch lost communication with gauge control module | Loss of communication |
Relay Control Module
| DTC | Description | DTC type |
|---|---|---|
| B1051 | Relay control module internal (CPU) error | Internal error |
| B1052 | Relay control module internal (EEPROM) error | Internal error |
| B1075 | Headlight switch malfunction | Signal error |
| B1080 | Power supply circuit (IG1 line) input error for Relay Control Module and MICU | Signal error |
| B1085 | Head Light Low Beam Power Source Abnormality | Signal error |
| B108A | Right Side Parking Light Circuit Shorted | Signal error |
| B108B | Left Side Parking Light Circuit Shorted | Signal error |
| B108C | Right Side Head Light Low Beam Circuit Shorted | Signal error |
| B108D | Left Side Head Light Low Beam Circuit Shorted | Signal error |
| B108E | Right Side Head Light High Beam Circuit Shorted | Signal error |
| B108F | Left Side Head Light High Beam Circuit Shorted | Signal error |
| B1090 | Illumination Circuit Shorted | Signal error |
| B1091 | DRL Circuit Shorted | Signal error |
| B1092 | Interior Light Cut Circuit Shorted | Signal error |
| U1280 | B-CAN communication bus line error (BUS-OFF) | Loss of communication |
| U1281 | Relay control module lost communication with MICU (MICU frame) | Loss of communication |
| U128D | Relay control module lost communication with gauge control module (VSP/NE frame) | Loss of communication |