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.
2016 Subaru WRX BaseFACTORY OEM SERVICE PROCEDURE
Airbag System DTCS
AIRBAG SYSTEM DIAGNOSTIC TROUBLE CODE (DTC) LIST
| DTC | Item | Description |
|---|---|---|
| U0073 | Control Module Communication Bus Off | < Ref. to DTC U0073 CONTROL MODULE COMMUNICATION BUS OFF , Diagnostic Procedure with Diagnostic Trouble Code (DTC). > |
| U0122 | Lost Communication With Vehicle Dynamics Control Module | < Ref. to DTC U0122 LOST COMMUNICATION WITH VEHICLE DYNAMICS CONTROL MODULE , Diagnostic Procedure with Diagnostic Trouble Code (DTC). > |
| U0140 | Lost Communication With Body Control Module | < Ref. to DTC U0140 LOST COMMUNICATION WITH BODY CONTROL MODULE , Diagnostic Procedure with Diagnostic Trouble Code (DTC). > |
| U0416 | Invalid Data Received From Vehicle Dynamics Control Module | < Ref. to DTC U0416 INVALID DATA RECEIVED FROM VEHICLE DYNAMICS CONTROL MODULE , Diagnostic Procedure with Diagnostic Trouble Code (DTC). > |
| U0422 | Invalid Data Received From Body Control Module | < Ref. to DTC U0422 INVALID DATA RECEIVED FROM BODY CONTROL MODULE , Diagnostic Procedure with Diagnostic Trouble Code (DTC). > |
| B2900 | AHL Control | < Ref. to DTC B2900 AHL CONTROL , Diagnostic Procedure with Diagnostic Trouble Code (DTC). > |
| B2902 | Rear Height Sensor Circuit | < Ref. to DTC B2902 REAR HEIGHT SENSOR CIRCUIT , Diagnostic Procedure with Diagnostic Trouble Code (DTC). > |
| B2904 | Led Headlight Circuit RH | < Ref. to DTC B2904 LED HEADLIGHT CIRCUIT RH , Diagnostic Procedure with Diagnostic Trouble Code (DTC). > |
| B2905 | Led Head Light Circuit LH | < Ref. to DTC B2905 LED HEAD LIGHT CIRCUIT LH , 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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