P244A on Renault
Diesel Particulate Filter Differential Pressure Too Low (Bank 1)
P244A on Renault vehicles indicates diesel particulate filter differential pressure too low (bank 1). Au7o has documented this code across 1 Renault model — most commonly on Koleos. 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. Typical repair costs on Renault range from $150 to $2,200, depending on the specific model and root cause.
Common Causes of P244A
- •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
P244A on Renault by Model
Renault Koleos(1 issue)
- 2.0 dCi diesel particulate filter (DPF) blockage2008-2020
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.
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What does P244A mean on 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 specifically, this code is documented across 1 model.
What causes P244A on Renault vehicles?▼
Common causes on Renault: 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. Specific causes vary by model and year — see the per-model sections below.
How much does it cost to fix P244A on a Renault?▼
Repair costs on Renault range from $150 to $2,200, depending on the specific model and root cause.
Which Renault models have P244A documented?▼
Au7o has documented P244A on 1 Renault model: Koleos.