Motor Electronics Coolant Pump A Control Circuit High
The motor electronics coolant pump A control circuit reports a control circuit high condition. Power electronics cooling cannot be commanded reliably.
Affected components
- Motor electronics coolant pump a
- Wiring harness
- Hybrid control module
Common causes
- High likelihood: Control wire shorted to B+
- Medium likelihood: Open pump motor
- Low likelihood: Connector pins corroded - high contact resistance
Diagnostic notes
- The malfunction indicator lamp may illuminate
- Reduced-power or limp mode may occur
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.