P244A on Mercedes-Benz
Diesel Particulate Filter Differential Pressure Too Low (Bank 1)
P244A on Mercedes-Benz vehicles indicates diesel particulate filter differential pressure too low (bank 1). Au7o has documented this code across 1 Mercedes-Benz model — most commonly on GLE. 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 Mercedes-Benz range from $300 to $4,000, 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 Mercedes-Benz by Model
Mercedes-Benz GLE(1 issue)
- Diesel DPF Regeneration Issues2016-2020
The diesel particulate filter (DPF) clogs prematurely, especially on vehicles used primarily for short trips. Failed regeneration cycles cause reduced power, increased fuel consumption, and eventually limp mode.
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View P244A across all makes →Frequently Asked Questions
What does P244A mean on Mercedes-Benz?▼
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 Mercedes-Benz specifically, this code is documented across 1 model.
What causes P244A on Mercedes-Benz vehicles?▼
Common causes on Mercedes-Benz: 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 Mercedes-Benz?▼
Repair costs on Mercedes-Benz range from $300 to $4,000, depending on the specific model and root cause.
Which Mercedes-Benz models have P244A documented?▼
Au7o has documented P244A on 1 Mercedes-Benz model: GLE.