Hybrid/EV Electronics Coolant Pump A Overspeed - Dry Run
The hybrid control module detects that the power electronics coolant pump A is running above the calibrated maximum speed without load. Indicates dry running due to coolant loss or air ingestion.
Affected components
- Hybrid electronics coolant pump a
- Power electronics coolant loop
Common causes
- High likelihood: Coolant loss in electronics loop
- Medium likelihood: Air drawn into pump suction
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.