Hybrid/EV Electronics Coolant Pump A Underspeed
The hybrid electronics coolant pump A runs below the calibrated minimum speed for the commanded duty. Mechanical resistance high or supply voltage low.
Affected components
- Hybrid electronics coolant pump a
- Power electronics coolant loop
Common causes
- High likelihood: Mechanical load increased
- Medium likelihood: Supply voltage low under load
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.