OBD-II code · Powertrain (generic, extended)
P2B5E Engine Coolant Flow Control Valve Position Sensor Circuit Low
The engine coolant flow control valve reports a position sensor circuit low condition. Coolant routing between engine and radiator branches cannot be commanded as expected.
Is it safe to drive with P2B5E?
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 ground
- PossibleInternal sensor short
- 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
- P2B5BEngine Coolant Flow Control Valve Control Circuit High
- P2B5CEngine Coolant Flow Control Valve Supply Circuit Low
- P2B5DEngine Coolant Flow Control Valve Position Sensor Circuit
- P2B5FEngine Coolant Flow Control Valve Position Sensor Circuit High
- P2B60Engine Coolant Flow Control Valve Position Sensor Circuit Range/Performance
- P2B61Engine Coolant Flow Control Valve Stuck Closed
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.