OBD-II code · Powertrain (generic, extended)
P23C3 Engine Coolant Bypass Valve C Position Sensor Circuit
A general circuit fault on the position sensor of the third engine coolant bypass valve C - typically used in advanced thermal management systems with multiple coolant loops.
Is it safe to drive with P23C3?
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
- Medium
- DIY friendly
- Often, with basic tools
- Typical labour
- 0.8–2 h
- Emissions test
- Usually unaffected
- Parts involved
- Coolant Bypass Valve C Position Sensor
Related codes
- P26A4Engine Coolant Bypass Valve A Position Sensor Circuit
- P2AA7Engine Coolant Bypass Valve B Position Sensor Circuit
- P23C0NOx Sensor Performance Slow Response High to Low Bank 1 Sensor 3
- P23C1NOx Sensor Sensing Element Bank 1 Sensor 3
- P23C2NOx Sensor Delayed Response High to Low Bank 1 Sensor 3
- P23C4Engine Coolant Bypass Valve C Position Sensor Circuit Low
- P23C5Engine Coolant Bypass Valve C Position Sensor Circuit High
- P23C6Engine Coolant Bypass Valve C Control Circuit Driver Current or Temperature Too High
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.