Fuel Level Sensor A/B Correlation
The signals of fuel level sensors A and B do not correlate within the calibrated tolerance. Common in saddle tanks where two sensors monitor each tank half.
Affected components
- Fuel level sensor a
- Fuel level sensor b
- Ecm
Common causes
- High likelihood: One float stuck on guide rod
- Medium likelihood: Saddle tank transfer pump failed
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.