P244A on Renault: How to Diagnose & Fix
Diesel Particulate Filter Differential Pressure Too Low (Bank 1)
1 Renault model · 1 documented issue · $150-$2,200 repair
P244A on Renault by model: symptoms, diagnosis and fix
The 2.0 dCi diesel Koleos (130/150/175 hp variants) is prone to DPF clogging, especially when driven mainly on short, low-speed trips that never allow the filter to reach regeneration temperature. Symptoms include reduced power / limp mode, visible smoke, and a DPF warning light. Faulty differential pressure or exhaust temperature sensors can worsen or falsely trigger the problem, and a botched dealer forced-regeneration has in some cases destroyed the filter outright.
Common Symptoms
- DPF / engine warning light
- Reduced engine power / limp mode
- Excessive exhaust smoke
- Jerking or poor throttle response
- Hard cold starting
- Frequent regeneration cycles
How to Fix
Take the vehicle on periodic longer motorway drives at moderate-to-high RPM to allow passive/active regeneration; verify the differential-pressure and exhaust-temp sensors are working. A clogged filter can often be professionally cleaned (~€100); a destroyed DPF requires replacement (£1,300-£2,000+).
Sources for this issue (3)
P244A code reference
General diagnostic-code context. The code alone does not confirm a cause for your vehicle; use the applicable issue card and its sources.
Frequently asked questions
What does P244A mean on a Renault?
P244A stands for "Diesel Particulate Filter Differential Pressure Too Low (Bank 1)." P244A is a diesel emissions code meaning the differential pressure across the diesel particulate filter (DPF) on bank 1 is too low. A pressure sensor measures the difference between the DPF inlet and outlet to gauge how loaded with soot the filter is; an abnormally low reading suggests the filter isn't restricting flow as expected. This can indicate a cracked, missing, or hollowed-out DPF substrate, or a sensor/hose problem giving a false low reading. It points to the DPF or its differential pressure sensing system rather than the engine itself. On Renault it is documented across 1 model: Koleos.
What are the most common causes of P244A?
The most common causes of P244A are: Cracked, damaged, or failed (hollow) DPF substrate, Faulty DPF differential pressure sensor, Disconnected, cracked, or leaking pressure sensor hoses, Clogged or blocked pressure sensor reference lines, Exhaust leak upstream or around the DPF, Aftermarket or tampered/removed DPF, Wiring or connector fault at the pressure sensor. The specific cause varies by vehicle.
How much does it cost to fix P244A on a Renault?
Published repair estimates on Renault range from $150 to $2,200 depending on the model and root cause. If an issue mentions a recall or campaign, check your VIN with the manufacturer or NHTSA and confirm eligibility and coverage with a dealer.
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Content compiled with AI assistance using NHTSA complaints, TSBs, and owner reports. May contain errors. Always verify with your vehicle's service manual.