What does P244A mean?
The pressure drop across the DPF is lower than it should be. A filter always has some restriction, so a very low reading can mean the sensor is not seeing pressure or the filter is damaged.
Codes are a starting point. They tell you which test failed, not which part to replace. Check for other stored codes and fix those in a sensible order.
Symptoms
- Check engine light
- Possible derate
Common causes
- Disconnected or cracked DPF sensor hose
- Plugged sensor tube
- Failed sensor
- Cracked DPF
How to diagnose P244A
- Check sensor hoses and tubes.
- Check the sensor reading at idle and at higher rpm.
- Inspect the DPF.
How to fix it
- Replace hoses
- Replace the sensor
- Replace the DPF
Estimated repair cost
Likely repairs for P244A run from about $150 to $7,000, depending on the cause.
| Repair | Typical range (parts + labor) |
|---|---|
| Diagnostic fee (scan + testing) | $100 - $200 |
| DPF differential pressure sensor | $150 - $500 |
| DPF replacement (pickup) | $2,000 - $7,000 |
These are rough US estimates for an independent shop in 2026, based on typical parts prices and standard labor times. Dealers, big trucks, luxury brands and high-cost areas often run higher. They are not quotes. Use the repair cost estimator to adjust for your vehicle.
How serious is P244A?
Moderate severity
Drivable to a shop.
P244A FAQ
What does P244A mean?
P244A stands for "Diesel Particulate Filter Differential Pressure Too Low (Bank 1)". The pressure drop across the DPF is lower than it should be.
Can I drive with a P244A code?
Drivable to a shop.
How much does it cost to fix P244A?
It depends on the cause. The likely repairs for P244A range from about $150 to $7,000 at an independent shop in the US, plus a diagnostic fee of roughly $100-$200. These are rough estimates; dealer prices and some vehicles run higher.
What is the most common cause of P244A?
The most common causes are: disconnected or cracked DPF sensor hose; plugged sensor tube; failed sensor.