DPF differential pressure too low on Peugeot HDi — Eolys additive system & pressure pipes are the usual culprits.
Peugeot P244A — DPF differential pressure too low on Peugeot HDi — Eolys additive system & pressure pipes are the usual culprits. Typical UK independent garage cost: £160–£1600.
What actually causes P244A on a Peugeot
Peugeot HDi engines use a fuel-additive (Eolys/FAP) DPF system — the additive lowers soot ignition temperature so the DPF regenerates more easily. P244A here usually means: (1) pressure-tap pipes blocked or perished, (2) DPF substrate cracked from a failed regen cycle, or (3) Eolys fluid run dry (the ECU compensates but eventually flags rationality faults). Drivers often report frequent regen attempts, then EML.
Peugeot engines that log P244A
- 1.6 HDi DV6 (208, 308, 3008, Partner)
- 2.0 HDi DW10 (308, 508, 5008)
- 1.5 BlueHDi DV5 (208, 2008, 308 newer)
How we diagnose P244A on a Peugeot
- Diagbox / scan tool — read DPF differential pressure live, Eolys fluid level, and soot mass load
- Inspect pressure-tap pipes for soot and splits — clean or replace before condemning DPF
- Check Eolys fluid level (dealer or independent with Diagbox) — top up if below threshold
- Inspect DPF visually for substrate damage if pressure pipes confirmed clear
- After any DPF or Eolys work, perform a forced regen and reset soot counters
The common misdiagnosis to avoid
Don't accept a £1,400+ DPF replacement until Eolys fluid level has been checked at a Peugeot specialist (it's a sealed tank, requires dealer-level tool to read level). A £90 Eolys top-up can restore normal DPF behaviour.
Peugeot P244A repair cost in the UK
Expect £160–£1600 including parts and labour at an independent garage. Main-dealer quotes on Peugeot 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
On 1.6 HDi DV6, P244A combined with frequent regen attempts and a slowly-dropping Eolys level often points at a leaking Eolys tank rather than the DPF itself — Peugeot specialist inspection is worth £40 before you spend £1,400 on a DPF you didn't need.
Codes usually seen alongside P244A on Peugeot
- P2002
- P2463
- P1340
- P244B
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.