Engine Coolant Pump Control Module System Voltage
The integrated controller of the smart coolant pump reports a system voltage out of operating range.
Affected components
- Smart coolant pump module
- Charging system
Common causes
- Medium likelihood: Weak battery sags voltage under pump load
- Medium likelihood: Alternator output out of regulation
Diagnostic notes
- The malfunction indicator lamp may illuminate
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.