Powertrain
generic / SAE
P05C6
Engine Coolant Pressure Sensor Circuit Intermittent or Erratic
Same as P05C2 with intermittent or erratic signal. 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.
SystemPowertrain
Typegeneric / SAE
GroupP0
Range / number5 / C6
Possible causes
- Intermittent contact at connector high
- Connector with intermittent contact under vibration low
- Harness routed against vibrating component low
Inspection / repair
- Difficulty: easy
- DIY: possible
- Estimated cost: 80–300 €
- Estimated time: 0.4–1.4 h
- Component: engine coolant pressure sensor
- Component: coolant pressure wiring
- MIL / check engine light
Sources
References
sae:J2012