P244B on Volkswagen
Diesel Particulate Filter Differential Pressure Too High (Bank 1)
P244B on Volkswagen vehicles indicates diesel particulate filter differential pressure too high (bank 1). Au7o has documented this code across 2 Volkswagen models — most commonly on T-Roc, Touran. 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 Volkswagen range from $100 to $1,800, 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 Volkswagen by Model
Volkswagen T-Roc(1 issue)
- TDI diesel DPF clogging / EGR contamination on short journeys2018-2022
T-Roc TDI diesels (1.6 TDI and 2.0 TDI, EA288) used predominantly for short, low-speed trips suffer incomplete DPF (diesel particulate filter) regeneration, leading to soot build-up, the DPF warning light, reduced power/limp mode and increased fuel use. A sticking or carbon-fouled EGR valve worsens soot loading and accelerates filter clogging. AdBlue/SCR sensor or software faults are also reported (warning light failing to clear after a refill). Some 2.0 TDI 4Motion owners report unusually frequent regeneration cycles (every ~120–130 miles).
Volkswagen Touran(1 issue)
- Diesel Particulate Filter (DPF) Clogging on TDI Models2009-2018
Touran TDI diesels fitted with a DPF are prone to the filter clogging with soot and ash, particularly on cars used for short, low-speed journeys that never reach the temperature needed for regeneration. Ash typically accumulates to problem levels around 80,000-100,000 miles. A blocked DPF triggers a warning light and limp mode; the issue is often compounded by failed glow plugs or software faults that prevent successful active regeneration (fault codes such as 07388 / P2463).
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View P244B across all makes →Frequently Asked Questions
What does P244B mean on Volkswagen?▼
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 Volkswagen specifically, this code is documented across 2 models.
What causes P244B on Volkswagen vehicles?▼
Common causes on Volkswagen: 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 Volkswagen?▼
Repair costs on Volkswagen range from $100 to $1,800, depending on the specific model and root cause.
Which Volkswagen models have P244B documented?▼
Au7o has documented P244B on 2 Volkswagen models: T-Roc, Touran.