Engine Oil Quality Sensor Circuit Low
Sensor signal voltage below the lower limit — typically a short to ground in the signal line or an internal short across the sensor electrode.
Affected components
- Oil quality sensor
- Sensor wiring
Common causes
- High likelihood: Signal wire shorted to ground
- Low likelihood: Connector pins corroded - high contact resistance
- Low likelihood: Harness chafing through insulation
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.