Citroen P244A

Differential pressure across DPF too low — on Citroen 1.6/2.0 HDi this is usually the pressure sensor or split pipework, not the DPF.

Citroen P244A — Differential pressure across DPF too low — on Citroen 1.6/2.0 HDi this is usually the pressure sensor or split pipework, not the DPF. Typical UK independent garage cost: £60–£1800.

What actually causes P244A on a Citroen

P244A on Citroen HDis is almost always the DPF differential pressure sensor itself failing, or its short rubber sense pipes splitting and giving false readings. The DPF is rarely actually damaged when this code stores — diagnose properly before quoting a £900–£1,800 DPF replacement.

Citroen engines that log P244A

• 1.6 HDi DV6 (Berlingo, C3, C4, DS3)
• 2.0 HDi DW10 (C5, DS5, Picasso)

How we diagnose P244A on a Citroen

1. Inspect both rubber sense pipes to the DPF differential pressure sensor — common splitting at the ends
2. Test sensor with scan tool: should read 0 hPa at engine off, rising under throttle
3. Only after sensor + pipework confirmed good, perform actual DPF backpressure check
4. Force regen if soot loading reads high but no other DPF damage

The common misdiagnosis to avoid

DPF replacement on a Citroen with P244A and intact rubber pipes is almost always unnecessary — replace the sensor first (£35–£90 part).

Citroen P244A repair cost in the UK

Expect £60–£1800 including parts and labour at an independent garage. Main-dealer quotes on Citroen are usually higher for the same job, and the spread exists because the cheap cause and the expensive cause throw the same code — pay for the diagnosis before you pay for parts.

Bob's workshop tip

Always carry spare DPF sense pipes (£4 each) in the workshop — every Citroen HDi over 80k will eventually need them, and they take 5 minutes to swap.

Codes usually seen alongside P244A on Citroen

• P244B
• P2002
• P0401

Symptoms drivers report with P244A

• Engine Management Light (EML) on, often shortly after a motorway run.
• Car drops into 'limp mode' with reduced power, making overtakes dodgy.
• Start-Stop system stops working (standard safety lockout for emissions codes).
• Noticeable whistling or hissing noise from under the car when accelerating.
• DPF warning light might flash, but the car doesn't feel like it's actually blocked.

Repairs that clear P244A

• Replace DPF pressure sensor (cheap first fix)
• Replace rubber sense pipes
• Backpressure test before DPF replacement

For the generic, all-makes explanation of this code — meaning, every known cause and UK cost bands — see our P244A guide.

Reading P244A on a Citroen properly

A generic reader will show P244A and nothing else. What matters is the freeze-frame data stored with it — engine speed, load, coolant temperature and fuel trims at the moment the fault was logged — plus whether any other module on the Citroen has logged something at the same time. Codes rarely arrive alone, and the order they were stored in usually points at which one is the cause and which are the consequences.

Clearing P244A without fixing it

Erasing the code resets the Citroen's readiness monitors as well as the light. The fault returns on the next drive cycle if the cause is still there, and in the meantime the incomplete monitors can stop the car passing an emissions check. After a genuine repair, the car is driven until the relevant monitor completes before it is handed back.

Bob's Mechanical Repairs is an independent garage in Birnam, Dunkeld, Perthshire, with 32 years of Bob's experience on the tools. If P244A is showing on your Citroen, bring any scan results with you — we will read the live data ourselves, confirm which cause it actually is, and price the repair before any work starts.