P2269: Water in fuel detected
The filter sensor has detected water built up in the diesel. The filter needs draining soon so the water does not reach the injectors.
| Code | P2269 |
|---|---|
| System | Engine and transmission |
| Group | P22xx, NOx sensors, oxygen sensors and emissions |
| Type | Generic: it means the same on every make |
| Can you keep driving? | Better not |
What P2269 means
The diesel filter holds back water carried in the fuel and a sensor warns when too much has collected. If it is not drained, water can get into the high pressure pump and injectors, which are very sensitive and expensive to repair. It usually comes from contaminated fuel or condensation in the tank.
Most common causes
- Water collected in the filter that needs draining
- Filling up with diesel contaminated with water
- Condensation in the tank from often running with little fuel
- Old or saturated fuel filter
- Water sensor giving a false alarm (if the warning stays after draining)
Symptoms
- Engine warning or water in fuel light on
- Jerking or uneven running
- Hard starting
- Loss of power
Can you drive with P2269?
Better not Only drive as much as you have to until the filter is drained: water can damage the high pressure pump and injectors.
How to check it
Diesel filters usually have a drain screw or tap underneath: letting a little out into a clear container shows whether there is water (it settles at the bottom). If a lot comes out or the warning returns quickly, have the tank checked.
How to read and clear P2269 with Final OBD
Plug an OBD2 scanner in under the steering wheel, switch the ignition on and open Final OBD. Under Faults you’ll see P2269 with this same explanation and whether it’s confirmed, pending or permanent.
With Free you read this code with its short description for nothing, and clear it if the engine stores it over standard OBD. With Pro you get the full explanation, how the car was running when it was logged (revs, temperature, load) and clearing in every control unit.
Clearing the code only turns the light off: if the cause is still there, it comes back. Clear it once it’s fixed, and not right before the ITV. It’s all in how to read and clear fault codes and in the ITV and OBD.
Similar codes
- P2237 Oxygen sensor current control circuit open (bank 1, sensor 1)
- P2243 Oxygen sensor reference voltage circuit open (bank 1, sensor 1)
- P2263 Turbocharger or supercharger boost system performance
- P2264 Water in fuel sensor circuit fault
- P2270 Oxygen sensor signal biased or stuck lean (bank 1, sensor 2)
- P2271 Oxygen sensor signal biased or stuck rich (bank 1, sensor 2)
- P2272 Oxygen sensor signal biased or stuck lean (bank 2, sensor 2)
- P2273 Oxygen sensor signal biased or stuck rich (bank 2, sensor 2)
- P2200 NOx sensor circuit fault (bank 1)
- P2201 NOx sensor circuit range or performance problem (bank 1)
- P2227 Barometric pressure sensor A range or performance problem
- P2228 Barometric pressure sensor A circuit low
P2269 is a generic code, so it means the same on any make, for example on Abarth, Citroën, Hyundai, Mini, Seat, Volvo. See what Final OBD does on your car in makes and models.
What does code P2269 mean?
The diesel filter holds back water carried in the fuel and a sensor warns when too much has collected. If it is not drained, water can get into the high pressure pump and injectors, which are very sensitive and expensive to repair. It usually comes from contaminated fuel or condensation in the tank.
Can you drive with P2269?
Only drive as much as you have to until the filter is drained: water can damage the high pressure pump and injectors.
How do you clear P2269?
With an OBD2 scanner and an app like Final OBD, which clears it for free if it’s stored by the engine control unit. But clearing it only turns the light off: if the cause isn’t fixed, P2269 comes back.
Read it on your car
Final OBD reads the faults of every control unit for free, including each make’s own codes, and with Pro explains each one in plain English. Free clears engine faults at no cost.
Coming soon
Mid to late October 2026
If you want to try it in your car before anyone else, send us your email and we will add you as a tester.
info@finalobd.com