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.
2012 Infiniti M37 BaseFACTORY OEM SERVICE PROCEDURE
Exterior Lighting System DTCS
EXTERIOR LIGHTING SYSTEM DIAGNOSTIC TROUBLE CODE (DTC) LIST
| DTC | Description |
|---|---|
| DTC B2503, B2504 | SWIVEL ACTUATOR |
| DTC B2514 | HEIGHT SENSOR UNUSUAL [RR] |
| DTC B2516 | SHIFT SIGNAL [P, R] |
| DTC B2517 | VEHICLE SPEED SIGNAL |
| DTC B2519 | LEVELIZER CALIBRATION |
| DTC B2521 | ECU CIRCUIT |
| DTC C0126 | STEERING ANGLE SENSOR SIGNAL |
| DTC C0428 | STEERING ANGLE SENSOR CALIBRATION |
| DTC U1000 | CAN COMM CIRCUIT |
| DTC U1010 | CONTROL UNIT (CAN) |
Factory Service Tools
Use the Manual With the Right Hardware
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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.