P0461

What it means

P0461 is the generic code for a range or performance fault in fuel level sensor A circuit. The control unit has seen the fuel level signal stay stuck, change implausibly, or disagree with expected fuel use or tank level over a period of driving. The sensor signal is within electrical limits, but it does not make sense.

Symptoms

• Fuel gauge reads wrong, stuck or jumps about
• Fuel gauge does not move after refuelling
• Low fuel warning light on when the tank is not low
• Malfunction indicator lamp on
• Evap system or fuel level related codes stored alongside
• Inaccurate range or fuel economy display

Possible causes

• Faulty fuel level sender (worn track, sticking float or damaged float arm) in the tanklikely
• Wiring or connector fault at the sender or tank connector, such as corrosion, high resistance or chafed wireslikely
• Bent, stuck or damaged float or sender mounting inside the tankpossible
• Fault in the fuel pump module assembly that carries the senderpossible
• Instrument cluster or other module that processes the fuel level signal faulty, or sender signal shared over the network is corrupted (depends on model)possible
• Fuel tank deformation or internal baffle problem affecting float movement, or a fault in a two-part saddle tank transfer system (depends on model)rare
• Outdated or faulty control unit software where a known issue with fuel level plausibility checks exists (model dependent)rare

How to diagnose

1. Read all stored codes and freeze frame data, noting fuel level, mileage and conditions when the code set, and check for other fuel level or evap codes
2. Compare the dashboard gauge with live data fuel level percentage as the tank is filled, and note whether the reading is stuck, jumpy or slow to change
3. Check for known service bulletins or software updates for the vehicle and engine
4. Inspect the wiring and connectors at the fuel pump module and tank for corrosion, water ingress, damage and pin tension
5. Check the sender signal and reference voltage or resistance against the manufacturer specification, wiggling the harness to look for dropouts
6. Check the sender resistance across its full travel with the module removed, looking for dead spots or erratic readings
7. Inspect the float, arm and module for damage, binding or fuel contamination, and check the tank for distortion
8. Check the cluster or receiving module and the network signal if the sender and wiring test good

How to fix

• Repair or replace damaged wiring, terminals or connectors in the sender circuit
• Replace the fuel level sender or the complete fuel pump module if the sender is not available separately
• Correct a bent or stuck float arm or refit the module properly if it is mispositioned
• Replace or repair the tank if it is deformed and restricts the float
• Update the control unit software only where a known fault and an official update exist, then clear the code and retest
• Repair or replace the instrument cluster or receiving module if confirmed faulty

Can I keep driving?

Nearby codes

• P0460GenericFuel Level Sensor A Circuit
• P0462GenericFuel Level Sensor A Circuit Low