Coolant Pump Control Circuit High
The electric coolant pump drive line reads above the upper threshold — usually a short to positive or a stuck-on driver stage.
Affected components
- Electric coolant pump
- Coolant pump wiring
Common causes
- High likelihood: Drive line shorted to positive
- Medium likelihood: Driver stage shorted on
- Low likelihood: Connector pins corroded - high contact resistance
Diagnostic notes
- The malfunction indicator lamp may illuminate
- This code can affect emissions
- A drive cycle may be required after repair
Related codes
Sources
Diagnostic information is provided for reference only. Confirm the code with a compatible scan tool and follow the vehicle manufacturer's service procedures before replacing components.