Powertrain
Definition only
Lights the check engine lamp
P2B6D: Engine Coolant Flow Control Valve Position Sensor Circuit Intermittent/Erratic
Standardized SAE J2012 code · P2Bxx codes
What does P2B6D mean?
The position sensor signal of the engine coolant flow control valve drops out or jumps intermittently. Loose connector or vibration-sensitive contact.
The code tells you which monitor failed, not which part is broken. Test before replacing parts.
Common causes
- High Sensor connector not seated
- Medium Harness chafing intermittently shorts the wire
- Low Connector with intermittent contact under vibration
Likelihood is a general estimate across vehicles; your make and model may differ.
Add your car to see reports of P2B6D on the same make and model first.
P2B6D in the community
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