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.
2018 Subaru Crosstrek Base, Automatic CVT TransFACTORY OEM SERVICE PROCEDURE
Body Control System DTCS
BODY CONTROL SYSTEM DIAGNOSTIC TROUBLE CODE IDENTIFICATION
| Code | Description & trouble part | Reference |
|---|---|---|
| B1010 | BODY CONTROL SYSTEM (BIU) MALFUNCTION | Ref. to BODY CONTROL (DIAGNOSTICS)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)>DTC B1010 BODY CONTROL SYSTEM (BIU) MALFUNCTION . |
| B1011 | BATTERY CONTROL POWER SUPPLY | Ref. to BODY CONTROL (DIAGNOSTICS)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)>DTC B1011 BATTERY CONTROL POWER SUPPLY . |
| B1012 | BATTERY BACKUP POWER SUPPLY | Ref. to BODY CONTROL (DIAGNOSTICS)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)>DTC B1012 BATTERY BACKUP POWER SUPPLY . |
| B1013 | IGNITION POWER | Ref. to BODY CONTROL (DIAGNOSTICS)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)>DTC B1013 IGNITION POWER . |
| B1014 | ACC POWER | Ref. to BODY CONTROL (DIAGNOSTICS)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)>DTC B1014 ACC POWER . |
| B1015 | KEY INTERLOCK CIRCUIT | Ref. to BODY CONTROL (DIAGNOSTICS)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)>DTC B1015 KEY INTERLOCK CIRCUIT . |
| B1016 | SHIFT LOCK CIRCUIT | Ref. to BODY CONTROL (DIAGNOSTICS)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)>DTC B1016 SHIFT LOCK CIRCUIT . |
| B1107 | CAN COMMUNICATION (BIU) STUCK | Ref. to BODY CONTROL (DIAGNOSTICS)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)>DTC B1107 CONTROL MODULE COMMUNICATION STICKING . |
| B1401 | COMBINATION METER COLLATION | Ref. to BODY CONTROL (DIAGNOSTICS)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)>DTC B1401 METER COLLATION . |
| B1402 | IMMOBILIZER KEY COLLATION | Ref. to BODY CONTROL (DIAGNOSTICS)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)>DTC B1402 IMMOBILIZER KEY COLLATION . |
| B1407 | COMBINATION METER COMMUNICATION | Ref. to BODY CONTROL (DIAGNOSTICS)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)>DTC B1407 MET COMMUNICATION . |
| B1408 | COMBINATION METER NON-VOLATILE MEMORY | Ref. to BODY CONTROL (DIAGNOSTICS)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)>DTC B1408 METER NON-VOLATILE MEMORY . |
| B1410 | TRANSPONDER COMMUNICATION | Ref. to BODY CONTROL (DIAGNOSTICS)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)>DTC B1410 TRANSPONDER COMMUNICATION . |
| B1411 | IMMOBILIZER ANTENNA | Ref. to BODY CONTROL (DIAGNOSTICS)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)>DTC B1411 IMMOBILIZER ANTENNA . |
| U0073 | CONTROL MODULE COMMUNICATION BUS OFF | Ref. to BODY CONTROL (DIAGNOSTICS)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)>DTC U0073 CONTROL MODULE COMMUNICATION BUS OFF . |
| U0074 | CONTROL MODULE COMMUNICATION BUS OFF | Ref. to BODY CONTROL (DIAGNOSTICS)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)>DTC U0073 CONTROL MODULE COMMUNICATION BUS OFF . |
| U0100 | LOST COMMUNICATION WITH ECM/PCM "A" | Ref. to BODY CONTROL (DIAGNOSTICS)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)>DTC U0100 LOST COMMUNICATION WITH ECM/PCM "A" . |
| U0101 | LOST COMMUNICATION WITH TCM | Ref. to BODY CONTROL (DIAGNOSTICS)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)>DTC U0101 LOST COMMUNICATION WITH TCM . |
| U0122 | LOST COMMUNICATION WITH VEHICLE DYNAMICS CONTROL MODULE | Ref. to BODY CONTROL (DIAGNOSTICS)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)>DTC U0122 LOST COMMUNICATION WITH VEHICLE DYNAMICS CONTROL MODULE . |
| U0127 | LOST COMMUNICATION WITH TIRE PRESSURE MONITOR CONTROL MODULE AND/OR KEYLESS ENTRY CONTROL MODULE | Ref. to BODY CONTROL (DIAGNOSTICS)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)>DTC U0127 LOST COMMUNICATION WITH TIRE PRESSURE MONITOR CONTROL MODULE AND/OR KEYLESS ENTRY CONTROL MODULE . |
| U0155 | LOST COMMUNICATION WITH INSTRUMENT PANEL CLUSTER (IPC) CONTROL MODULE | Ref. to BODY CONTROL (DIAGNOSTICS)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)>DTC U0155 LOST COMMUNICATION WITH INSTRUMENT PANEL CLUSTER (IPC) CONTROL MODULE . |
| U0164 | LOST COMMUNICATION WITH HVAC CONTROL MODULE | Ref. to BODY CONTROL (DIAGNOSTICS)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)>DTC U0164 LOST COMMUNICATION WITH HVAC CONTROL MODULE . |
| U0167 | Lost Communication With Immobilizer Control Module | Ref. to BODY CONTROL (DIAGNOSTICS)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)>DTC U0167 LOST COMMUNICATION WITH IMMOBILIZER CONTROL MODULE . |
| U0222 | LOST COMMUNICATION WITH DRIVER'S DOOR POWER WINDOW | Ref. to BODY CONTROL (DIAGNOSTICS)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)>DTC U0222 LOST COMMUNICATION WITH DRIVER'S DOOR POWER WINDOW . |
| U0223 | LOST COMMUNICATION WITH PASSENGER'S DOOR POWER WINDOW | Ref. to BODY CONTROL (DIAGNOSTICS)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)>DTC U0223 LOST COMMUNICATION WITH PASSENGER'S DOOR POWER WINDOW . |
| U0327 | SOFTWARE INCOMPATIBILITY WITH VEHICLE SECURITY CONTROL MODULE | Ref. to BODY CONTROL (DIAGNOSTICS)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)>DTC U0327 SOFTWARE INCOMPATIBILITY WITH VEHICLE SECURITY CONTROL MODULE . |
| U0401 | INVALID DATA RECEIVED FROM ECM/PCM "A" | Ref. to BODY CONTROL (DIAGNOSTICS)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)>DTC U0401 INVALID DATA RECEIVED FROM ECM/PCM "A" . |
| U0402 | INVALID DATA RECEIVED FROM TCM | Ref. to BODY CONTROL (DIAGNOSTICS)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)>DTC U0402 INVALID DATA RECEIVED FROM TCM . |
| U0416 | INVALID DATA RECEIVED FROM VEHICLE DYNAMICS CONTROL MODULE | Ref. to BODY CONTROL (DIAGNOSTICS)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)>DTC U0416 INVALID DATA RECEIVED FROM VEHICLE DYNAMICS CONTROL MODULE . |
| U0423 | INVALID DATA RECEIVED FROM INSTRUMENT PANEL CLUSTER CONTROL MODULE | Ref. to BODY CONTROL (DIAGNOSTICS)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)>DTC U0423 INVALID DATA RECEIVED FROM INSTRUMENT PANEL CLUSTER CONTROL MODULE . |
| U0424 | INVALID DATA RECEIVED FROM HVAC CONTROL MODULE | Ref. to BODY CONTROL (DIAGNOSTICS)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)>DTC U0424 INVALID DATA RECEIVED FROM HVAC CONTROL MODULE . |
| U0426 | Invalid Data Received From Immobilizer Control Module | Ref. to BODY CONTROL (DIAGNOSTICS)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)>DTC U0426 INVALID DATA RECEIVED FROM IMMOBILIZER CONTROL MODULE . |
| U0427 | INVALID DATA RECEIVED FROM VEHICLE SECURITY CONTROL MODULE | Ref. to BODY CONTROL (DIAGNOSTICS)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)>DTC U0427 INVALID DATA RECEIVED FROM VEHICLE SECURITY CONTROL MODULE . |
| U0430 | INVALID DATA RECEIVED FROM TIRE PRESSURE MONITOR CONTROL MODULE AND/OR KEYLESS ENTRY CONTROL MODULE | Ref. to BODY CONTROL (DIAGNOSTICS)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)>DTC U0430 INVALID DATA RECEIVED FROM TIRE PRESSURE MONITOR CONTROL MODULE AND/OR KEYLESS ENTRY CONTROL MODULE . |
| U1235 | LOST COMMUNICATION WITH EyeSight | Ref. to BODY CONTROL (DIAGNOSTICS)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)>DTC U1235 LOST COMMUNICATION WITH EYESIGHT . |
| U123C | LOST COMMUNICATION WITH HIGH BEAM ASSIST CONTROL MODULE | Ref. to BODY CONTROL (DIAGNOSTICS)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)>DTC U123C LOST COMMUNICATION WITH HIGH BEAM ASSIST CONTROL MODULE . |
| U1433 | INVALID DATA RECEIVED FROM EyeSight | Ref. to BODY CONTROL (DIAGNOSTICS)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)>DTC U1433 INVALID DATA RECEIVED FROM EYESIGHT . |
| U1674 | LIN COMMUNICATION BUS 2 ERROR BODY CONTROL MODULE | Ref. to BODY CONTROL (DIAGNOSTICS)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)>DTC U1674 LIN COMMUNICATION BUS 2 ERROR BODY CONTROL MODULE . |
| U1822 | LOST COMMUNICATION WITH MASTER MAIN SWITCH | Ref. to BODY CONTROL (DIAGNOSTICS)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)>DTC U1822 LOST COMMUNICATION WITH MASTER MAIN SWITCH . |
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.