Engine Hot Lamp Output Control Circuit
A circuit fault on the engine-hot warning lamp output - the high-coolant-temperature warning may not light when needed.
Affected components
- Engine hot lamp
Common causes
- High likelihood: Open in lamp or wiring
Possible symptoms
- Check engine light on
- Possible limp mode or no-start
- Multiple follow-up faults across modules
- Reset/relearn may be needed after repair
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.