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.
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HOMESERVICE MANUALSSUBARU2014IMPREZA SPORT LIMITEDREPAIR AND DIAGNOSISBODY & FRAMEDOOR LOCKSKEYLESS ACCESS WITH PUSH BUTTON START SYSTEM (DIAGNOSTICS)GENERAL DIAGNOSTIC TABLEINSPECTIONIMMOBILIZER SYSTEM
2014 Subaru Impreza Sport Limited
Immobilizer System
2014 Subaru Impreza Sport LimitedSECTION Immobilizer System
| Symptoms | Note |
|---|---|
| Engine does not start | < Ref. to ENGINE DOES NOT START , INSPECTION, Diagnostics with Phenomenon.> |
| < Ref. to DTC B2784 ANTENNA COIL FAULT , Diagnostic Procedure with Diagnostic Trouble Code (DTC).> | |
| < Ref. to DTC B278A ABNORMAL IMMOBILIZER POWER SUPPLY , Diagnostic Procedure with Diagnostic Trouble Code (DTC).> | |
| < Ref. to DTC B2785 LIN COMMUNICATION ERROR , Diagnostic Procedure with Diagnostic Trouble Code (DTC).> | |
| < Ref. to DTC B2789 ID CODE BOX NO RESPONSE , Diagnostic Procedure with Diagnostic Trouble Code (DTC).> | |
| < Ref. to DTC B2790 ID CODE BOX ABNORMAL (EEPROM ABNORMAL) , Diagnostic Procedure with Diagnostic Trouble Code (DTC).> | |
| Check the brake switch. < Ref. to INSPECTION , Stop Light Switch.> | |
| Check the parking switch signal. < Ref. to INSPECTION , AT Shift Lock Solenoid and "P" Range Switch.> | |
| Check the DTC of the ECM. | |
| Cannot register the immobilizer. | Refer to the "REGISTRATION MANUAL FOR IMMOBILIZER". |
| Engine does not start with the remote engine starter. | < Ref. to DTC B2779 REMOTE CONTROL ENGINE STARTER COMMUNICATION COLLATION NG , Diagnostic Procedure with Diagnostic Trouble Code (DTC).> |
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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.