Engine Oil Quality Sensor Circuit High
Sensor signal voltage above the upper limit — typically a short to reference voltage or an open signal return.
Affected components
- Oil quality sensor
- Sensor wiring
Common causes
- High likelihood: Signal wire shorted to reference voltage
- Low likelihood: Connector pins corroded - high contact resistance
- Low likelihood: Supply wire pinched against B+ source
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.