Fuel Level Sensor A or B Stuck
The ECM detects that one of the two level sensors is stuck but cannot identify which from the available signals — for example because the saddle-tank algorithm sees implausible delta only intermittently. Both sensors should be inspected.
Affected components
- Fuel level sensor a
- Fuel level sensor b
Common causes
- High likelihood: One stuck float — inspect both
Diagnostic notes
- The malfunction indicator lamp may illuminate
- This code can affect emissions
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.