Fault code P0460 – a step-by-step guide to diagnosing and fixing it

Error code P0460 is displayed and the check engine light is on - what does this mean?

The OBD system detects a fault in the fuel level sensor circuit if the sensor transmits unrealistic or inconsistent values. This DTC P0460 fault code relates to the fuel system and can be interpreted slightly differently by different manufacturers, although the basic problem of the defective fuel level sensor remains the same.

What causes can this fault code have?

• Defective fuel level sensor in the tank
• Damaged wiring to the fuel level sensor
• Corroded or loose plug connections
• Defective fuel pump unit with integrated sensor
• Short circuit or interruption in the sensor circuit
• Defective control unit (rare)
• Dirty or blocked float on the sensor

What symptoms occur in parallel with fault code P0460?

• Incorrect fuel gauge: The fuel gauge shows unrealistic values or remains constant
• Fluctuating display: The fuel level jumps back and forth between different values
• Check engine light: The check engine light is permanently illuminated
• Range problems: Inaccurate calculation of the remaining range
• Tank warning light: Warning of empty tank despite sufficient fuel
• Starting problems: In rare cases, starting difficulties when the fuel level is very low

How can the problem with error code P0460 be rectified?

• Repairing this trouble code requires a systematic approach to identify the exact source of the fault.
• Replace the sensor: Replace the complete fuel level sensor including the float unit, as this is the most common cause of EOBD trouble code P0460
• Repair wiring: Check all cables between the sensor and control unit for damage and replace or repair defective cables
• Clean plug connections: Clean all electrical connections on the fuel tank and dashboard and treat with contact spray
• Replace the fuel pump: For integrated systems, replace the entire fuel delivery unit if the sensor is not available separately
• Carry out a control unit reset: After each repair, delete the fault memory and carry out a test drive to check the function
• Completely replace the tank unit: For older vehicles, replace the entire fuel sensor unit if several components are affected