OBD-II code · Powertrain (generic, extended)
P2B6D Engine Coolant Flow Control Valve Position Sensor Circuit Intermittent/Erratic
The position sensor signal of the engine coolant flow control valve drops out or jumps intermittently. Loose connector or vibration-sensitive contact.
Is it safe to drive with P2B6D?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelySensor connector not seated
- PossibleHarness chafing intermittently shorts the wire
- Less likelyConnector with intermittent contact under vibration
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 Position Sensor, Wiring Harness, Ecm
Related codes
- P2B6ACoolant Pump D Stuck/Stalled
- P2B6BCoolant Pump D Control Module Overtemperature
- P2B6CCoolant Pump D Overspeed/Air in System
- P2B6ETurbocharger/Supercharger A Temperature Sensor Circuit
- P2B6FTurbocharger/Supercharger A Temperature Sensor Circuit Low
- P2B70Turbocharger/Supercharger A Temperature Sensor Circuit High
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.