DPF Exhaust Back Pressure Too High
The POWERSTROKE-P244B (Power Stroke) diesel fault code means: DPF Exhaust Back Pressure Too High. This is a serious severity code.
- Keep driving?
- Short distances only
- DIY difficulty
- advanced
- Estimated cost
- $300-$3,500
Down with a Power Stroke fault on the road?
Get connected with a verified mobile diesel mechanic near you. Verified diesel & reefer techs, launching on the freight corridor.
Find a mobile mechanic →A $30 car code reader can't do diesel. The HD7000 reads full-system codes and does parked DPF regen, idle/speed-limit, and service resets from the cab — on everything from a 6.7 Cummins/Power Stroke/Duramax pickup to Class-8 trucks (Detroit, Paccar, CAT, Volvo, Mack, International).
Check Price on AmazonAffiliate link -- we earn a commission at no extra cost to you.
Full-system 6/9/16-pin diesel scan tool for Cummins, Paccar, CAT, Detroit and more — plug-and-play, no subscription. A cheaper way to read heavy-duty codes a basic OBD2 scanner skips entirely.
Check Price on AmazonAffiliate link -- we earn a commission at no extra cost to you.
Common Symptoms
- Limp mode
- CEL
- High EGT warning
Probable Causes (Ranked by Likelihood)
- Plugged DPF Very Likely
- Failed EBP sensor Likely
- Failed/stuck turbo causing false back pressure reading Possible
Step-by-Step Diagnostic Procedure
Monitor EBP sensor PID vs physical gauge at WOT.
Perform DPF regen attempt.
If EBP climbs quickly during regen, DPF is shot.
Frequently Asked Questions
What is P244B on a 6.4L Power Stroke?
P244B on a 6.4L Power Stroke (2008-2010) indicates: DPF Exhaust Back Pressure Too High. This is a known diagnostic trouble code on this engine family and typically points to the causes listed above.
Can I drive with P244B on my Power Stroke?
Only drive short distances to get to a repair facility. Continued operation may cause further damage.
How much does it cost to fix P244B?
Repair cost is typically $300-$3,500 depending on the underlying cause and whether you DIY or use a shop. Diagnostic time alone runs $100-$180 at most independent diesel shops.
P244B on Other Platforms
The same code ID appears across other engines, vehicles, and equipment. Diagnostic flow varies by platform — see the matching breakdown: