Powertrain
generic / SAE
P252C
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.
SystemPowertrain
Typegeneric / SAE
GroupP2
Range / number5 / 2C
Possible causes
- Signal wire shorted to ground high
- Connector pins corroded - high contact resistance low
- Harness chafing through insulation low
Inspection / repair
- Difficulty: medium
- DIY: shop recommended
- Estimated cost: 120–500 €
- Estimated time: 0.5–2 h
- Component: oil quality sensor
- Component: sensor wiring
Sources
References
sae:J2012