Engine Oil Level Sensor Circuit High
The oil level sensor signal voltage reads above the upper limit, typically a short to reference voltage or an open signal return. Pegged at maximum, the ECM cannot distinguish full from invalid and disables the level monitor.
Affected components
- Oil level sensor
- Sensor wiring
Common causes
- High likelihood: Signal wire shorted to reference voltage
- Medium likelihood: Open signal return
- Low likelihood: Connector pins corroded - high contact resistance
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.