Fuel Mode Indicator Lamp Control Circuit Low
Voltage on the fuel mode indicator lamp control line is below the expected window. Wiring faults of this kind typically come from chafing, water ingress at connector seals, or pin push-back — a wiggle test on the harness while the code is active often confirms the location.
Affected components
- Fuel mode lamp
- Instrument cluster
- Wiring harness
Common causes
- High likelihood: Control wire shorted to ground
- Medium likelihood: Bulb driver internally shorted
- Low likelihood: Connector pins corroded - high contact resistance
Diagnostic notes
- The malfunction indicator lamp may illuminate
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.