P2B68
Coolant Pump D Control Circuit High
Coolant pump D reports a control circuit high condition. Coolant circulation through the affected loop cannot be commanded reliably.
Coolant pump D reports a control circuit high condition. Coolant circulation through the affected loop cannot be commanded reliably.
Common causes
- high
Control wire shorted to B+
One of the most commonly reported causes for this code — check this first.
Typical part cost: $220-1100
- medium
Open pump motor
A plausible cause — test and verify before replacing parts.
Typical part cost: $220-1100
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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 P2B68 mean?
P2B68 means "Coolant Pump D Control Circuit High". It is a generic OBD-II code that points to a fault in the auxiliary emission controls.
What are the most common causes of P2B68?
control wire shorted to b+; open pump motor; connector pins corroded - high contact resistance — 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?
This code can put the vehicle into limp or reduced-power mode. Avoid extended driving and have the vehicle diagnosed promptly. Use the Wrenchify app for a full diagnosis specific to your vehicle.
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