Hybrid/EV Electronics Coolant Pump B Underspeed
Hybrid/EV electronics coolant pump B reports a underspeed condition. Power electronics cooling on this branch is impaired.
Affected components
- Hybrid electronics coolant pump b
- Power electronics coolant loop
Common causes
- High likelihood: Pump motor or driver fault
- Medium likelihood: Air or coolant level issue
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.