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 MANUALSSUBARU2014OUTBACK 2.5I, STANDARD TRANSREPAIR AND DIAGNOSISBODY & FRAMEDOOR LOCKSIMMOBILIZER SYSTEM (DIAGNOSTICS)DIAGNOSTIC PROCEDURE WITH DIAGNOSTIC TROUBLE CODE (DTC)DTC B1406 SCU_EEPROM_NGDTC DETECTING CONDITION
2014 Subaru Outback 2.5i, Standard Trans
DTC B1406 SCU_EEPROM_NG: DTC Detecting Condition
2014 Subaru Outback 2.5i, Standard TransSECTION DTC Detecting Condition
- Defective security control module
- ROM of security control module cannot be accessed
DIAGNOSTIC PROCEDURE
| Step | Check | Yes | No |
|---|---|---|---|
| 1 PERFORM IGNITION KEY REGISTRATION. Perform registration to all keys used for the vehicle. Refer to the "REGISTRATION MANUAL FOR IMMOBILIZER". |
Is registration of all keys complete? | Make sure it is possible to start the engine with all keys that have been taught. This completes the work. | Go to step 2 . |
| 2 PERFORM IGNITION KEY REGISTRATION. Perform registration to all keys used for the vehicle. Refer to the "REGISTRATION MANUAL FOR IMMOBILIZER". |
Is registration of all keys complete? | Make sure it is possible to start the engine with all keys that have been taught. This completes the work. | Go to step 3 . |
| 3 PERFORM IGNITION KEY REGISTRATION. Perform registration to all keys used for the vehicle. Refer to the "REGISTRATION MANUAL FOR IMMOBILIZER". |
Is registration of all keys complete? | Make sure it is possible to start the engine with all keys that have been taught. This completes the work. | Replace the security control module. Refer to SECURITY CONTROL MODULE . Register all ignition keys (transponders). Refer to the "REGISTRATION MANUAL FOR IMMOBILIZER". |
NOTE:
When the security control module and body integrated unit are replaced at a time, the immobilizer can not be registered. In this case, it is necessary to rewrite the ID into the body integrated unit.
RENDER: 1.0x
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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.