Pin16

P2269

Water in Fuel Condition

Severity
High
Driving
Short journeys only

Water has been detected in the fuel. This is not a sensor complaint - the module is reporting that the water trap has collected enough water to matter. In a modern diesel that needs dealing with now rather than at the next service, because the fuel is what lubricates the high-pressure pump and the injectors.

Possible causes

What you might notice

What to check, in order

  1. Drain the water trap. On most diesels this is a drain plug or tap at the bottom of the fuel filter housing, and it is a five-minute job described in the handbook.
  2. If the vehicle has been misfuelled, or a large amount of water is suspected, do not start the engine at all. Running the pump is what spreads contamination through the whole system.
  3. Change the fuel filter after draining - the element will have collected contamination as well as water.
  4. Ask where the vehicle was last fuelled. A single bad tank explains this, and returning to the same supplier repeats it.
  5. Keep the tank reasonably full in cold weather. Condensation forms in the air space above the fuel, so a habitually near-empty tank collects more water.

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Where this code sits