Fuel level sensor reading inconsistent.
P0461 — also written PO461, P 0461, 0461 — is the OBD-II code for fuel level sensor range/performance. Same code, same fix: this page covers every spelling of it.
This code means your car's computer doesn't trust what the fuel float is telling it. It’s a classic headache on high-mileage Vauxhalls and JLR products where the sensor track literally wears out from the float bobbing up and down.
P0461 is a sensors fault code, typically costing £100–£500 to put right in a UK garage.
What P0461 actually feels like to drive
- The fuel gauge 'ghosts'—randomly drops to zero while driving, then bounces back.
- Range-to-empty display shows '---' or jumps from 100 miles to 10 miles in a minute.
- The needle gets stuck at half a tank regardless of how much diesel you pump in.
- The 'low fuel' light flashes even though you just filled up at the Tesco forecourt.
- Engine starts and runs fine, but the MIL (Check Engine Light) stays on for the MOT man to see.
What causes P0461?
- Failed sensor
- Wiring
UK vehicles that throw P0461 most often
- Vauxhall Insignia A 2.0 CDTi (2008-2017)
- Ford Focus Mk3 1.6/2.0 TDCi (2011-2018)
- Range Rover Evoque 2.2 SD4 (2011-2015) - Dual sender setup
- Nissan Qashqai J11 1.5 dCi (2013-2020)
- Vauxhall Astra J (Engine codes A14NET/A17DTE) 2009-2015
- Land Rover Freelander 2 (L359) 2006-2014
How P0461 is fixed
- Sender unit replacement
The P0461 misdiagnosis that wastes money
I see drivers throwing money at new instrument clusters because they think the dial is 'stuck,' or worse, they replace the fuel pump entirely without checking the separate sender wiring. On plenty of Vauxhalls and Fords, the fault isn't the sensor at all—it’s 'bio-growth' or sludge from cheap supermarket diesel coating the float arm, making it physically heavy. We also get the 'chucked a bottle of cleaner in' crowd; nine times out of ten, that won't fix a worn-out resistor track on a sensor that's done 120,000 miles.
What a UK garage should charge for P0461
A basic diagnostic plug-in will cost you £45–£80 at an independent. If the sensor is part of the pump assembly (common on Astras), a Bosch or VDO unit is about £180–£260 plus two hours labour (£120-£180). If the tank needs dropping because there's no access hatch under the seat—I'm looking at you, Ford—expect the bill to hit £450 easily. Main dealers will often quote £700+ because they'll only fit the 'genuine' assembly and charge £150 an hour for the privilege.
P0461 repair cost in the UK
Most P0461 repairs land between £100–£500 including parts and labour. The spread is wide because the cheap fix (a sensor, a hose, a leak) and the expensive fix (a major component) throw the same code — which is why a proper diagnosis before parts are bought saves the most money.
Bob's tip on P0461
Before you let a garage pull your fuel tank—which is a massive labour bill—ask them to perform a 'sweep test' on the dash using their diagnostic tool. If the needle moves smoothly from empty to full on the screen, the motor in your dash is fine. Also, tell them to check the earth points near the rear bench. I’ve seen dozens of these codes caused by a bit of Scottish road salt corroding the chassis ground. If the garage insists on a 'guess and check' approach, walk away. A proper tech will use an Ohm meter at the connector to prove the sensor is dead before ordering parts.
Can you drive with P0461?
Drivable.
Urgency: low.