P244A: Diesel Particulate Filter Differential Pressure Too Low (Bank 1)
13 vehicles · 8 makes · $100-$4,000 repair
Most Reported On
P244A is an OBD-II diagnostic trouble code meaning “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. This code is most commonly reported on 2009-2018 Jaguar XF, 2010-2015 Audi A3 (TDI, TDI Premium, TDI Premium Plus, TDI Prestige), and 2016-2020 Mercedes-Benz GLE (GLE350d), plus 10 other vehicles, with repair costs ranging from $100 to $4,000.
Common Causes
Typical Repair Cost
Based on 13 documented vehicle-specific issues. Actual cost depends on root cause and vehicle.
Diagnostic Tools
To diagnose P244A, you'll need an OBD-II scanner. Here are our recommendations at every price point.
ANCEL AD310 Classic OBD-II Scanner
by ANCEL
A simple, affordable code reader that reads and clears check engine codes. Great for quick diagnostics on any OBD-II vehicle (1996+).
- Read & clear engine codes
- View freeze frame data
- I/M readiness status
- No batteries or app needed
BlueDriver Pro Bluetooth Scanner
by BlueDriver
Bluetooth OBD-II scanner with a free companion app. Provides enhanced diagnostics, smog readiness, and repair reports sourced from a database of verified fixes.
- Enhanced diagnostics (ABS, SRS, transmission)
- Repair Reports with verified fixes
- Smog check readiness
- Free app (iOS & Android)
LAUNCH CRP123X OBD-II Scanner
by LAUNCH
A professional-grade handheld scanner that reads all four major systems (engine, transmission, ABS, SRS) with live data streaming and graphing.
- Engine, transmission, ABS, SRS diagnostics
- Live data stream & graphing
- AutoVIN for vehicle identification
- Free lifetime updates via Wi-Fi
Autel MaxiCOM MK808S Diagnostic Tool
by Autel
Shop-level diagnostic tablet with bi-directional control, active tests, and full system coverage. Ideal for serious DIYers and small shops.
- All-system diagnostics (25+ modules)
- Bi-directional control & active tests
- Oil reset, EPB, BMS, TPMS, injector coding
- 7-inch touchscreen with Android OS
As an Amazon Associate, we earn from qualifying purchases. Prices are approximate and may vary.
Vehicles Affected (13)
FAQ
What does P244A mean?
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.
What are the most common causes of P244A?
The most common causes of P244A are: 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. The specific cause varies by vehicle.
How much does it cost to fix P244A?
Repair costs for P244A range from $100 to $4,000, depending on the vehicle and root cause.
Which vehicles are affected by P244A?
Au7o has documented P244A across 13 vehicle models from 8 manufacturers: Audi, Citroen, Jaguar, Mercedes-Benz, Peugeot, Renault, Skoda, Volkswagen.
Sources (12)
- resourceMyTurboDiesel - DPF/Adblue FAQ
- ForumTDIClub - Best fuel or additive to prevent DPF clogging
- ForumDpf regeneration — Volkswagen T-Roc Forum
- articleVolkswagen T-Roc: Common Problems & Solutions — CarNews
- ForumDPF Worries / Regeneration - Mercedes A-Class Forum
- articleMercedes Diesel Particulate Filter (DPF) Problems, Cleaning, Regeneration - YOUCANIC
- articleMercedes A-Class Problems: Common Issues & Repair Costs - WhoCanFixMyCar
- ForumDPF Problems on 2012 Touareg V6 Diesel — Club Touareg Forum
- ForumAnother Limp mode / DPF fault — Club Touareg Forum
- articleVW Touareg DPF Regeneration guide — Catman
- ForumKoleos 2.0dci 175 problems — Independent Renault Forums
Content compiled with AI assistance using NHTSA complaints, TSBs, and owner reports. May contain errors. Always verify with your vehicle's service manual.