P244B on Renault
Diesel Particulate Filter Differential Pressure Too High (Bank 1)
P244B on Renault vehicles indicates diesel particulate filter differential pressure too high (bank 1). Au7o has documented this code across 1 Renault model — most commonly on Koleos. This code applies to diesel vehicles and means the engine computer detected that the pressure difference across the diesel particulate filter (DPF) is higher than allowed, indicating the filter is heavily restricted. The DPF traps soot from the exhaust and is periodically cleaned through regeneration. Excessively high differential pressure means too much soot or ash is clogging the filter. This can reduce power, trigger limp mode, and risk damaging the DPF or turbo if ignored, so it should be addressed promptly. Typical repair costs on Renault range from $150 to $2,200, depending on the specific model and root cause.
Common Causes of P244B
- •Clogged DPF from soot or ash accumulation
- •Failed or incomplete regeneration cycles
- •Faulty DPF differential pressure sensor
- •Frequent short-trip driving preventing regen
- •Faulty EGR causing excess soot
- •Blocked or kinked pressure sensor hoses
- •Faulty exhaust temperature sensor affecting regen
P244B 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 P244B mean on Renault?▼
P244B stands for "Diesel Particulate Filter Differential Pressure Too High (Bank 1)." This code applies to diesel vehicles and means the engine computer detected that the pressure difference across the diesel particulate filter (DPF) is higher than allowed, indicating the filter is heavily restricted. The DPF traps soot from the exhaust and is periodically cleaned through regeneration. Excessively high differential pressure means too much soot or ash is clogging the filter. This can reduce power, trigger limp mode, and risk damaging the DPF or turbo if ignored, so it should be addressed promptly. On Renault specifically, this code is documented across 1 model.
What causes P244B on Renault vehicles?▼
Common causes on Renault: Clogged DPF from soot or ash accumulation, Failed or incomplete regeneration cycles, Faulty DPF differential pressure sensor, Frequent short-trip driving preventing regen, Faulty EGR causing excess soot. Specific causes vary by model and year — see the per-model sections below.
How much does it cost to fix P244B 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 P244B documented?▼
Au7o has documented P244B on 1 Renault model: Koleos.