Fuel Level Sensor C Circuit
A third fuel level sensor (C) used on multi-tank trucks, dual-saddle SUVs, or auxiliary fuel systems returns no usable signal. Without it, calculated fuel level and EVAP monitor enabling will be off.
Affected components
- Fuel level sensor c
- Fuel tank
- Wiring harness
Common causes
- High likelihood: Open sender resistor or broken float
- Medium likelihood: Corroded tank pump module connector
Diagnostic notes
- The malfunction indicator lamp may illuminate
Related codes
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.