P0460 Code - Fuel Level Sensor Circuit Malfunction

What Does P0460 Mean?

The catalytic converter has an oxygen sensor in front and behind it. When the vehicle is warm and running in closed loop mode, the upstream oxygen sensor waveform reading should fluctuate. When you see P0460 engine fault code on your engine code reader this description will help you.

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What are the common causes of P0460 ?

• A large air leak at or near the number one oxygen sensor would also cause a lean mixture.
• Faulty IMRC actuator relay (if equipped)
• Rarely - faulty Powertrain Control Module (PCM-programming required after replacement)

How do you troubleshoot P0460 ?

If any faulty, corroded, broken or disconnected wiring has been detected in the electrical circuitry related to the fuel sensor, it should be fixed or replaced as needed. The fuel tank ground and connections with the PCM should be cleaned thoroughly as well to promote a better current. Test the voltage throughout different segments of the system between the tank, sensor and PCM. If there's a voltage discrepancy of over 1 volt between segments, it is likely that this is the faulty area. Replace and reconnect faulty components as needed. Afterwards, the vehicle should be started and all fuel-related systems checked to ensure the repairs have been completed.

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