Powertrain
Definition only
Lights the check engine lamp
P2B68: Coolant Pump D Control Circuit High
Standardized SAE J2012 code · P2Bxx codes
What does P2B68 mean?
Coolant pump D reports a control circuit high condition. Coolant circulation through the affected loop cannot be commanded reliably.
The code tells you which monitor failed, not which part is broken. Test before replacing parts.
Common causes
- High Control wire shorted to B+
- Medium Open pump motor
- Low Connector pins corroded - high contact resistance
Likelihood is a general estimate across vehicles; your make and model may differ.
Add your car to see reports of P2B68 on the same make and model first.
P2B68 in the community
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