Diesel Engine Error Code P244B: How to Fix It
Hard 3-6 hours High Severity
Verified June 2026
- Error Code
- P244B
- Brand
- Diesel
- Product Type
- automotive
- Severity
- High
- DIY Difficulty
- Hard
- Estimated Fix Time
- 3-6 hours
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Tools You'll Need
- OBD2 scanner with live data capability
- Socket wrench set
- Torque wrench
- Multimeter
- Safety glasses and gloves
- Jack and jack stands
- Penetrating oil
How to Fix Error Code P244B
-
Safety First and Initial Diagnosis
Never work on a hot exhaust system - severe burns can occur. Ensure adequate ventilation when working with exhaust components. -
Attempt DPF Regeneration
Do not perform regeneration in enclosed spaces due to extremely hot exhaust temperatures and emissions. -
Check DPF Pressure Sensors
-
Inspect DPF Filter Physically
Wear safety glasses and gloves when handling the DPF. The filter may be heavy and have sharp edges. -
Clean or Replace DPF
Never use pressure washers or harsh chemicals on DPF filters as this can damage the delicate ceramic matrix. -
Clear Codes and Test
Parts You May Need
Diesel Particulate Filter (DPF)
Check Price on Amazon
DPF differential pressure sensor
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Exhaust gaskets and clamps
Check Price on Amazon
DPF cleaning solution
Check Price on Amazon
Diesel Particulate Filter (DPF)
Check Price on Amazon
DPF differential pressure sensor
Check Price on Amazon
Exhaust gaskets and clamps
Check Price on Amazon
DPF cleaning solution
Check Price on Amazon
Diesel Particulate Filter (DPF)
Check Price on Amazon
DPF differential pressure sensor
Check Price on Amazon
Exhaust gaskets and clamps
Check Price on Amazon
DPF cleaning solution
Check Price on Amazon
Diesel Particulate Filter (DPF)
Check Price on Amazon
DPF differential pressure sensor
Check Price on Amazon
Exhaust gaskets and clamps
Check Price on Amazon
DPF cleaning solution
Check Price on Amazon
Diesel Particulate Filter (DPF)
Check Price on Amazon
DPF differential pressure sensor
Check Price on Amazon
Exhaust gaskets and clamps
Check Price on Amazon
DPF cleaning solution
Check Price on Amazon
Diesel Particulate Filter (DPF)
Check Price on Amazon
DPF differential pressure sensor
Check Price on Amazon
Exhaust gaskets and clamps
Check Price on Amazon
DPF cleaning solution
Check Price on Amazon
Diesel Particulate Filter (DPF)
Check Price on Amazon
DPF differential pressure sensor
Check Price on Amazon
Exhaust gaskets and clamps
Check Price on Amazon
DPF cleaning solution
Check Price on Amazon
Diesel Particulate Filter (DPF)
Check Price on Amazon
DPF differential pressure sensor
Check Price on Amazon
Exhaust gaskets and clamps
Check Price on Amazon
DPF cleaning solution
Check Price on Amazon
Diesel Particulate Filter (DPF)
Check Price on Amazon
DPF differential pressure sensor
Check Price on Amazon
Exhaust gaskets and clamps
Check Price on Amazon
DPF cleaning solution
Check Price on Amazon
Diesel Particulate Filter (DPF)
Check Price on Amazon
DPF differential pressure sensor
Check Price on Amazon
Exhaust gaskets and clamps
Check Price on Amazon
DPF cleaning solution
Check Price on Amazon
Diesel Particulate Filter (DPF)
Check Price on Amazon
DPF differential pressure sensor
Check Price on Amazon
Exhaust gaskets and clamps
Check Price on Amazon
DPF cleaning solution
Check Price on Amazon
Diesel Particulate Filter (DPF)
Check Price on Amazon
DPF differential pressure sensor
Check Price on Amazon
Exhaust gaskets and clamps
Check Price on Amazon
DPF cleaning solution
Check Price on Amazon
Diesel Particulate Filter (DPF)
Check Price on Amazon
DPF differential pressure sensor
Check Price on Amazon
Exhaust gaskets and clamps
Check Price on Amazon
DPF cleaning solution
Check Price on Amazon
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When to Call a Professional
Call a diesel mechanic if the DPF requires professional cleaning equipment, if you're uncomfortable working with exhaust systems, or if the code returns after DPF replacement. Professional diagnosis may be needed if multiple exhaust system codes are present.Frequently Asked Questions
Can I drive with P244B error code?
You should avoid driving except to get to a repair facility. Continued driving with a severely clogged DPF can cause engine damage, reduced power, and potential exhaust system failure.
How much does it cost to fix P244B code?
Professional DPF cleaning costs $300-600, while DPF replacement ranges from $1,500-4,000 depending on the vehicle. DIY cleaning solutions cost $50-150 but require proper equipment.
What causes DPF to clog so badly?
Frequent short trips, poor quality diesel fuel, faulty fuel injectors, or ignoring previous DPF warning lights can cause severe clogging. City driving without highway speeds prevents natural regeneration.
How long does a DPF last before replacement?
Most DPF filters last 100,000-150,000 miles with proper maintenance. However, severe operating conditions or neglected maintenance can reduce this significantly.
Can I remove the DPF permanently?
Removing the DPF is illegal in most areas and will cause the vehicle to fail emissions testing. It can also trigger additional error codes and affect engine performance.