Fuel Heater Control Module Power Control Circuit Open
The control line that energises the fuel heater control module - used on diesel systems for cold-weather fuel preheating - is open.
Affected components
- Fuel heater control module
Common causes
- High likelihood: Open in control wiring
- Low likelihood: Pin pushed back out of connector body
- Low likelihood: Cracked solder joint inside the module or sensor
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.