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.
2014 Subaru TribecaFACTORY 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 | Error data is received from ECM. | < Refer to DTC U1211 CAN-HS ECM DATA ABNORMAL , Diagnostic Procedure with Diagnostic Trouble Code (DTC). > |
| U1212 | Error data is received from TCM. | < Refer to DTC U1212 CAN-HS TCM DATA ABNORMAL , Diagnostic Procedure with Diagnostic Trouble Code (DTC). > |
| U1213 | Error data is received from VDC/ABS module. | < Refer to DTC U1213 CAN-HS VDC/ABS DATA ABNORMAL , Diagnostic Procedure with Diagnostic Trouble Code (DTC). > |
| U1221 | Data does not arrive from ECM. | < Refer to DTC U1221 CAN-HS ECM NO-RECEIVE DATA , Diagnostic Procedure with Diagnostic Trouble Code (DTC). > |
| U1222 | Data does not arrive from TCM. | < Refer to DTC U1222 CAN-HS TCM NO-RECEIVE DATA , Diagnostic Procedure with Diagnostic Trouble Code (DTC). > |
| U1223 | Data does not arrive from VDC/ABS CM. | < Refer to DTC U1223 CAN-HS VDC/ABS NO-RECEIVE DATA , Diagnostic Procedure with Diagnostic Trouble Code (DTC). > |
| U1300 | Low speed CAN circuit is open or shorted. | < Refer to 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 | Error data is received from meter. | < Refer to DTC U1311 CAN-LS METER UNIT DATA ABNORMAL , Diagnostic Procedure with Diagnostic Trouble Code(DTC). > |
| U1321 | Data does not arrive 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) . > |
| B1402 | Malfunction related immobilizer | < Refer to LIST OF DIAGNOSTIC TROUBLE CODE (DTC) . > |
| B1403 | Malfunction related immobilizer | < Refer to 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
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Disclosure: Verified tool recommendations may earn an affiliate commission at no cost to you.
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.
Rather have a pro handle this?
A certified mobile mechanic comes to your home or office. They bring the tools, you stay comfortable. No tow truck, no waiting room, no surprises.
Comes to youSame-day available12-month warranty
Get a Free QuoteNo obligation. See pricing before you book.