OBD-II code · Powertrain (generic, extended)
P2B59 Engine Coolant Flow Control Valve Control Circuit/Open
The engine coolant flow control valve reports a control circuit/open condition. Coolant routing between engine and radiator branches cannot be commanded as expected.
Is it safe to drive with P2B59?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelyOpen in valve control wire
- PossibleOpen valve motor
- Less likelyPin pushed back out of connector body
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
- P2B56B Camshaft Profile Actuator B Control Stuck On Bank 2
- P2B57Low Engine Oil Pressure - Camshaft Control Disabled
- P2B58Engine Coolant Flow Control Valve Motor Current High
- P2B5AEngine Coolant Flow Control Valve Control Circuit Low
- P2B5BEngine Coolant Flow Control Valve Control Circuit High
- P2B5CEngine Coolant Flow Control Valve Supply Circuit Low
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.