Powertrain
Definition only
Lights the check engine lamp
P2B76: Coolant Heater B Control Circuit/Open
Standardized SAE J2012 code · P2Bxx codes
What does P2B76 mean?
The control circuit of coolant heater B reports a control circuit/open condition. Auxiliary preheating of the coolant cannot be commanded as expected.
The code tells you which monitor failed, not which part is broken. Test before replacing parts.
Common causes
- High Open in heater control wire
- Medium Open heater element
- Low Pin pushed back out of connector body
Likelihood is a general estimate across vehicles; your make and model may differ.
Add your car to see reports of P2B76 on the same make and model first.
P2B76 in the community
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