Water in Fuel Condition - Sensor A
The water-in-fuel sensor at fuel filter A has detected water above the warning threshold. The fuel filter must be drained; running the engine on water-contaminated diesel can damage the high-pressure pump and injectors.
Affected components
- Water in fuel sensor
- Fuel filter
Common causes
- High likelihood: Condensate accumulated in filter — drain required
Diagnostic notes
- The malfunction indicator lamp may illuminate
- 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.