P244B on Ford
Diesel Particulate Filter Differential Pressure Too High (Bank 1)
P244B on Ford vehicles indicates diesel particulate filter differential pressure too high (bank 1). Au7o has documented this code across 1 Ford model — most commonly on Fiesta. 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 Ford range from $400 to $2,500, 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 Ford by Model
Ford Fiesta(1 issue)
- TDCi Diesel DPF Blockage & Failed Regeneration (Short-Trip Use)2011-2019
Diesel Fiestas frequently suffer diesel particulate filter (DPF) blockage and incomplete/failed regeneration, especially on cars used mainly for short, low-speed journeys that never reach regeneration temperature. Soot accumulates, the DPF warning light appears, and the car may enter limp mode or dump excess fuel into the oil during failed active regens (raising oil level and diluting it). Underlying triggers are often other faults — a leaking/faulty injector, stuck EGR, blocked intake, or failed DPF differential-pressure/EGT sensor — so the blocked DPF is frequently a symptom rather than the root cause.
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View P244B across all makes →Frequently Asked Questions
What does P244B mean on Ford?▼
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 Ford specifically, this code is documented across 1 model.
What causes P244B on Ford vehicles?▼
Common causes on Ford: 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 Ford?▼
Repair costs on Ford range from $400 to $2,500, depending on the specific model and root cause.
Which Ford models have P244B documented?▼
Au7o has documented P244B on 1 Ford model: Fiesta.