Faulty fuel level sender (worn track, damaged float or stuck arm) in the tank; Corroded, damaged or loose connector at the fuel pump and sender assembly; Open circuit, short to earth or short to supply in the sender wiring; Poor earth connection shared by the sender circuit; Instrument cluster or control unit fault affecting the fuel level signal, depending on model; Fuel tank deformed or float obstructed, giving an implausible reading.

P0460

Fuel Level Sensor A Circuit.

Generic
Powertrain
Generic code
Low severity

How this code is built

P: SystemPowertrain
0: Defined bySAE, the same on every car
4: AreaAuxiliary emission controls
60: FaultThe specific fault in that area

What it means

P0460 is the generic SAE J2012 code for a malfunction in the fuel level sensor A circuit. The control unit has seen a fuel level signal that is implausible, stuck or outside its expected range, so it cannot trust the fuel gauge reading. On many vehicles the fuel level is also used by evaporative system and misfire monitors, so those tests may be suspended.

Symptoms

Fuel gauge stuck on one reading, or reading empty or full when it is not
Fuel gauge jumping or flickering erratically
Malfunction indicator lamp on, and possibly a low fuel warning that is wrong
Fuel range or economy display showing wrong or no figures
Evaporative system monitor not completing at an emissions test

Possible causes

Faulty fuel level sender (worn track, damaged float or stuck arm) in the tanklikely
Corroded, damaged or loose connector at the fuel pump and sender assemblylikely
Open circuit, short to earth or short to supply in the sender wiringpossible
Poor earth connection shared by the sender circuitpossible
Instrument cluster or control unit fault affecting the fuel level signal, depending on modelrare
Fuel tank deformed or float obstructed, giving an implausible readingrare

How to diagnose

Read all stored codes and freeze frame data, and note any related evaporative or fuel level codes
Compare the gauge reading with the fuel level value shown in live data and with the amount of fuel actually in the tank
Inspect the wiring and connectors at the fuel pump and sender access point and at the control unit for corrosion, chafing or water ingress
Check the sender circuit for supply, signal and earth with a multimeter, following the wiring diagram for the model
Measure the sender resistance across its range and compare with the manufacturer specification; this may need the sender removed or the tank at different fill levels
Check the sender earth connection for resistance and security
Check for a signal that varies smoothly as fuel level changes, and for any short or open circuit on the signal wire
If the sender and wiring are good, check the instrument cluster or control unit, following the model-specific procedure

How to fix

Replace the fuel level sender or fuel pump and sender assembly if the readings are out of specification
Clean or replace corroded or damaged connectors and terminals
Repair open or shorted wiring in the sender circuit
Restore a poor earth connection
Replace or repair the instrument cluster or control unit only after confirming it is the fault

Can I keep driving?

Low severity

The car is normally safe to keep driving, but the fuel gauge cannot be trusted, so note the mileage since refuelling to avoid running out of fuel. Book it in soon, as it may cause an emissions test failure.

Guide written by AI from the code's definition. Confirm with a diagnosis before replacing parts.