P244B on Land Rover
Diesel Particulate Filter Differential Pressure Too High (Bank 1)
P244B on Land Rover vehicles indicates diesel particulate filter differential pressure too high (bank 1). Au7o has documented this code across 1 Land Rover model — most commonly on Discovery. 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 Land Rover range from $300 to $3,500, 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 Land Rover by Model
Land Rover Discovery(1 issue)
- Diesel Particulate Filter (DPF) Regeneration Issues2010-2020
Diesel Discovery models suffer from DPF regeneration problems, especially when used for short journeys. The DPF becomes overloaded with soot and the active regeneration cycle cannot complete, leading to a blocked filter. Warning lights illuminate and the engine enters limp mode. Repeated failed regenerations cause the DPF to become permanently blocked, requiring expensive replacement.
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View P244B across all makes →Frequently Asked Questions
What does P244B mean on Land Rover?▼
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 Land Rover specifically, this code is documented across 1 model.
What causes P244B on Land Rover vehicles?▼
Common causes on Land Rover: 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 Land Rover?▼
Repair costs on Land Rover range from $300 to $3,500, depending on the specific model and root cause.
Which Land Rover models have P244B documented?▼
Au7o has documented P244B on 1 Land Rover model: Discovery.