Engine Coolant Pump Supply Voltage Circuit
The dedicated supply voltage line to the coolant pump module is faulty. Pump cannot operate without battery feed.
Affected components
- Smart coolant pump module
- Supply circuit
Common causes
- High likelihood: Blown fuse on supply line
- Medium likelihood: High-resistance contact in supply harness
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.