Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
2012 Subaru Tribeca LimitedFACTORY OEM SERVICE PROCEDURE
LAN Communication System DTCS
LAN COMMUNICATION DIAGNOSTIC TROUBLE CODE (DTC) LIST
| DTC | Description | Reference |
|---|---|---|
| B1100 | Body integrated unit internal error | Refer to DTC B1100 INTEG. UNIT SYSTEM ERROR , Diagnostic Procedure with Diagnostic Trouble Code (DTC). |
| B1101 |
|
Refer to DTC B1101 BATT P/SUPPLY MALFUNCTION CONT , Diagnostic Procedure with Diagnostic Trouble Code (DTC). |
| B1102 | Voltage malfunction caused by poor contact of battery power supply backup circuits | Refer to DTC B1102 BATT P/SUPPLY MALFUNCTION BACKUP , Diagnostic Procedure with Diagnostic Trouble Code (DTC). |
| B1103 | Voltage malfunction caused by poor contact of IGN power supply circuits | Refer to DTC B1103 IGNITION POWER FAILURE , Diagnostic Procedure with Diagnostic Trouble Code (DTC). |
| B1104 | Voltage malfunction caused by poor contact of ACC power supply circuits | Refer to DTC B1104 ACC POWER FAILURE , Diagnostic Procedure with Diagnostic Trouble Code (DTC). |
| B1105 | Ground short of key interlock circuit | Refer to DTC B1105 KEY INTERLOCK CIRCUIT ABNORMAL , Diagnostic Procedure with Diagnostic Trouble Code (DTC). |
| B1106 | Open or short in shift lock circuit | Refer to DTC B1106 SHIFT LOCK CIRCUIT FAILURE , Diagnostic Procedure with Diagnostic Trouble Code (DTC). |
| U1201 | Communication is unstable because of high speed CAN communication error. | Refer to DTC U1201 CAN-HS COUNTER ABNORMAL , Diagnostic Procedure with Diagnostic Trouble Code (DTC). |
| U1202 | Integrated unit communication is shut down because of high speed CAN communication error. | Refer to DTC U1202 CAN-HS BUS OFF , Diagnostic Procedure with Diagnostic Trouble Code (DTC). |
| U1211 | Received error data from ECM. | Refer to DTC U1211 CAN-HS ECM DATA ABNORMAL , Diagnostic Procedure with Diagnostic Trouble Code (DTC). |
| U1212 | Received error data from TCM. | Refer to DTC U1212 CAN-HS TCM DATA ABNORMAL , Diagnostic Procedure with Diagnostic Trouble Code (DTC). |
| U1213 | Received error data from VDC/ABS module. | Refer to DTC U1213 CAN-HS VDC/ABS DATA ABNORMAL , Diagnostic Procedure with Diagnostic Trouble Code (DTC). |
| U1221 | Not received data from ECM. | Refer to DTC U1221 CAN-HS ECM NO-RECEIVE DATA , Diagnostic Procedure with Diagnostic Trouble Code (DTC). |
| U1222 | Not received data from TCM. | Refer to DTC U1222 CAN-HS TCM NO-RECEIVE DATA , Diagnostic Procedure with Diagnostic Trouble Code (DTC). |
| U1223 | Not received data from VDC/ABS CM. | Refer to DTC U1223 CAN-HS VDC/ABS NO-RECEIVE DATA , Diagnostic Procedure with Diagnostic Trouble Code (DTC). |
| U1300 | Open or short in low speed CAN circuit | Refer to LAN(diag)-62, DTC U1300 CAN-LS MALFUNCTION , Diagnostic Procedure with Diagnostic Trouble Code (DTC). |
| U1301 | Communication is unstable because of low speed CAN communication error. | Refer to DTC U1301 CAN-LS COUNTER ABNORMAL , Diagnostic Procedure with Diagnostic Trouble Code (DTC). |
| U1302 | Integrated unit communication is shut down because of low speed CAN communication error. | Refer to DTC U1302 CAN-LS BUS OFF , Diagnostic Procedure with Diagnostic Trouble Code (DTC). |
| U1311 | Received error data from meter. | Refer to DTC U1311 CAN-LS METER UNIT DATA ABNORMAL , Diagnostic Procedure with Diagnostic Trouble Code (DTC). |
| U1321 | Not received data from meter. | Refer to DTC U1321 CAN-LS METER NO-RECEIVE DATA , Diagnostic Procedure with Diagnostic Trouble Code (DTC). |
| B1401 | Malfunction related immobilizer | Refer to LIST OF DIAGNOSTIC TROUBLE CODE (DTC) List of Diagnostic Trouble Code (DTC). |
| B1402 | Malfunction related immobilizer | Refer to LIST OF DIAGNOSTIC TROUBLE CODE (DTC) List of Diagnostic Trouble Code (DTC). |
| B1403 | Malfunction related immobilizer | Refer to LIST OF DIAGNOSTIC TROUBLE CODE (DTC) List of Diagnostic Trouble Code (DTC). |
| B1500 | Open or short circuit in keyless UART circuit | Refer to DTC B1500 KEYLESS UART COM. MALFUNCTION , Diagnostic Procedure with Diagnostic Trouble Code (DTC). |
Factory Service Tools
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.
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