Fuel and air

P0460 — Fuel Level Sensor "A" Circuit Malfunction

Severity: low Safe to drive

What P0460 means

P0460 is set when the PCM detects an invalid or out-of-range signal from fuel level sensor "A". This is usually a float-type sender in the fuel pump module whose resistance changes as fuel is used. The PCM uses the signal for the fuel gauge and for EVAP system monitoring, which depends on knowing the tank level.

Symptoms

  • Check Engine light on with P0460 stored
  • Fuel gauge reads wrong or jumps around
  • Gauge sticks, drops to empty or disappears
  • Low fuel warning with plenty of fuel in the tank
  • Failed emissions inspection
  • Occasional fuel vapor smell

Possible causes

  1. Faulty fuel level sensor or sender in the tank module
  2. Open, shorted or corroded wiring and connectors, poor ground
  3. Faulty instrument cluster or gauge
  4. Blown fuse in the sensor circuit
  5. PCM input or internal fault (uncommon)
  6. EVAP-related issues: purge valve, vent solenoid, canister hose, loose gas cap (indirect)

How to diagnose

  1. Scan for codes, review freeze frame data and clear to see if P0460 returns
  2. Compare the scan tool fuel level reading with the actual amount and the dash gauge
  3. Check the fuse and the power supply at the sender connector
  4. Inspect the tank module connector and wiring for corrosion, damage or breaks
  5. Test the sensor ground and signal wire continuity with a multimeter
  6. Measure sender resistance across the float range against specifications
  7. Inspect the gas cap, hoses and EVAP valves if you smell fuel vapor
  8. If wiring and sender are good, test the instrument cluster and PCM

Common fixes

  • Replace the fuel level sensor or fuel pump module
  • Repair wiring and connectors, clean terminals and grounds
  • Replace the blown fuse (and find out why it blew if it repeats)
  • Repair or replace the instrument cluster
  • Reflash or replace the PCM only after confirming it is faulty

P0460 on different brands

Ford · manuals
On Ford, P0460:11 in the three-byte format means fuel level sensor A circuit low (short to ground); it identifies the condition the monitor detected, not a confirmed failed part.

Questions and answers

Can I drive with P0460?

Yes, the engine usually runs normally. The gauge may be unreliable though, so track your mileage since the last fill-up and don't let the tank run very low.

Why is the check engine light on and my fuel gauge wrong?

The PCM is getting an invalid signal from the fuel level sensor. The usual culprits are the sender in the tank, wiring or a connector.

Will P0460 fail an emissions test?

Most likely yes, since an active code with the Check Engine light on usually causes a failure. Repair the fault and clear the code first.

This is general information about the code. The meaning can differ between makes and models: a scan tool and the repair manual for your car will show the exact cause.