OBD-II code · Powertrain (generic)
P05C2 Engine Coolant Pressure Sensor Circuit
A general circuit fault is detected on the engine coolant pressure sensor - used to detect a pressurised coolant system that has lost pressure (cap, hose, head gasket leak) or is over-pressurised (combustion gases entering coolant).
Is it safe to drive with P05C2?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelyOpen in sensor or wiring
Repair at a glance
- Difficulty
- Easy
- DIY friendly
- Often, with basic tools
- Typical labour
- 0.4–1.4 h
- Emissions test
- Usually unaffected
- Parts involved
- Engine Coolant Pressure Sensor
Related codes
- P05BFStop-Start Mode Switch Circuit High
- P05C0Active Grille Air Shutter Module A Over Temperature
- P05C1Active Grille Air Shutter Module B Over Temperature
- P05C3Engine Coolant Pressure Sensor Circuit Range or Performance
- P05C4Engine Coolant Pressure Sensor Circuit Low
- P05C5Engine Coolant Pressure Sensor Circuit High
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.