OBD-II code · Powertrain (generic, extended)
P2B5F Engine Coolant Flow Control Valve Position Sensor Circuit High
The engine coolant flow control valve reports a position sensor circuit high condition. Coolant routing between engine and radiator branches cannot be commanded as expected.
Is it safe to drive with P2B5F?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelySignal wire shorted to B+
- PossibleOpen position sensor
- Less likelyConnector pins corroded - high contact resistance
Repair at a glance
- Difficulty
- Medium
- DIY friendly
- Best left to a mechanic
- Typical labour
- 1–4 h
- Emissions test
- Usually unaffected
- Parts involved
- Engine Coolant Flow Control Valve, Wiring Harness, Ecm
Related codes
- P2B5CEngine Coolant Flow Control Valve Supply Circuit Low
- P2B5DEngine Coolant Flow Control Valve Position Sensor Circuit
- P2B5EEngine Coolant Flow Control Valve Position Sensor Circuit Low
- P2B60Engine Coolant Flow Control Valve Position Sensor Circuit Range/Performance
- P2B61Engine Coolant Flow Control Valve Stuck Closed
- P2B62Coolant Pump B Supply Voltage Circuit
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.