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.
The position sensor signal of the engine coolant flow control valve drops out or jumps intermittently. Loose connector or vibration-sensitive contact.
Common causes
- high
Sensor connector not seated
One of the most commonly reported causes for this code — check this first.
Typical part cost: $170-770
- medium
Harness chafing intermittently shorts the wire
A plausible cause — test and verify before replacing parts.
Typical part cost: $170-770
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First things to check
- 1Confirm the code with a scan tool and check for additional related codes.
- 2Inspect the relevant sensors, wiring, and connectors for damage or corrosion.
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Related codes
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Frequently asked questions
What does P2B6D mean?
P2B6D means "Engine Coolant Flow Control Valve Position Sensor Circuit Intermittent/Erratic". It is a generic OBD-II code that points to a fault in the auxiliary emission controls.
What are the most common causes of P2B6D?
sensor connector not seated; harness chafing intermittently shorts the wire; connector with intermittent contact under vibration — these are the most commonly reported causes. Verify with a proper diagnosis before replacing parts, or use the Wrenchify app for a vehicle-specific diagnosis.
Can I keep driving with this code?
The vehicle is usually drivable for short distances, but the problem can worsen or affect emissions. Diagnose and repair as soon as practical. Use the Wrenchify app for a full diagnosis specific to your vehicle.
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