GM Error Code P1431: How to Fix It

Q: Can I drive with GM error code P1431?

Yes, you can typically drive with this error code as it's considered low severity. However, your fuel gauge may be inaccurate, so track your mileage and fuel consumption manually to avoid running out of fuel.

Q: How much does it cost to fix P1431?

The cost varies depending on the root cause. A simple wiring repair might cost $100-200, while replacing the fuel level sensor can range from $200-500 including labor, depending on your specific GM model.

Q: What causes GM P1431 error code?

Common causes include a faulty fuel level sensor, damaged wiring harness, poor electrical connections, corroded ground connections, or a malfunctioning fuel gauge cluster.

Q: Will P1431 cause my car to fail emissions testing?

Possibly. While P1431 isn't directly emissions-related, any active check engine light can cause a vehicle to fail emissions testing in many states. It's best to resolve the issue before testing.

Abstract

GM error code P1431 indicates a performance issue with fuel level sensor 2, which monitors the fuel tank level and sends data to your vehicle's computer. This error can cause inaccurate fuel gauge readings and potentially trigger the check engine light.