Fuel Cap Lamp Control Circuit
The control circuit for the fuel cap warning lamp reports a fault. The ECM cannot drive the indicator that warns of an open or loose fuel cap.
Affected components
- Fuel cap lamp
- Lamp wiring
Common causes
- High likelihood: Lamp circuit open or shorted
- Low likelihood: Instrument cluster fault
Possible symptoms
- Check engine light on
- Possible limp mode or no-start
- Multiple follow-up faults across modules
- Reset/relearn may be needed after repair
Diagnostic notes
- The malfunction indicator lamp may illuminate
Related codes
Sources
Diagnostic information is provided for reference only. Confirm the code with a compatible scan tool and follow the vehicle manufacturer's service procedures before replacing components.