P2C51
Fuel Level Sensor A/B Correlation
P2C51 is an OBD-II diagnostic trouble code meaning: Fuel Level Sensor A/B Correlation. Common causes: fuel level sensor a or b faulty, problems with wiring to sensors. Estimated repair cost: $17–56.
Symptoms
- Incorrect fuel level readings on the dashboard
- The fuel level arrow jumps or shows incorrect values
- Check engine light comes on
- Remaining fuel is not displayed accurately
- The system can show an empty tank when there is fuel
Causes
- Fuel level sensor A or B faulty
- Problems with wiring to sensors
- Short circuit or open circuit in the sensor circuit
- Poor contact in sensor connectors
- Mechanical damage to sensor floats
How to Fix
- Check the resistance of the fuel level sensors
- Inspect wiring and connectors for damage
- Check the integrity of the sensor circuit
- Replace a faulty fuel level sensor
- Calibrate sensors after replacement
Related codes
Error P2C51 by Vehicle Brand
FAQ
What does the P2C51 code mean?
P2C51 is an OBD-II diagnostic trouble code that indicates: Fuel Level Sensor A/B Correlation
What causes a P2C51 error code?
The most common causes of P2C51 include: Fuel level sensor A or B faulty; Problems with wiring to sensors; Short circuit or open circuit in the sensor circuit; Poor contact in sensor connectors.
How do I fix a P2C51 diagnostic trouble code?
To fix P2C51: Check the resistance of the fuel level sensors. Inspect wiring and connectors for damage. Check the integrity of the sensor circuit. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P2C51?
Yes, but get it checked soon
How much does it cost to fix P2C51?
The estimated repair cost for P2C51 is $17–56. Actual cost depends on your vehicle, location, and labor rates.
See also: Russian version · NationStat