Engine Coolant Flow Low/Performance
Coolant flow through the engine is below the expected level. Risk of overheating.
Affected components
- Water pump
- Coolant lines
- Thermostat
Common causes
- High likelihood: Water pump impeller broken or worn
- Medium likelihood: Coolant passage blocked
Diagnostic notes
- The malfunction indicator lamp may illuminate
- This code can affect emissions
- A drive cycle may be required after repair
- Reduced-power or limp mode may occur
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.