Fault code index · medium
B1503
Exterior lighting: Front / Rear
Exterior lighting: Front / Rear
Scope: 2.5L/3.0L gasoline · System(s): GECM · Factory MIL flag: N · Default action: RH turn signal activate circuit: open circuit, short circuit to ground
Common causes
- See factory diagnostic procedure / wiring diagram for this code
Quick checks
- Confirm freeze-frame and conditions when the code set