Chevrolet P1448: Diesel Particulate Filter Regeneration Frequency Too Low

What Does The Chevrolet P1448 Code Mean?

If regeneration cycles are not completed as requested by the ECM, this code will
set. Short drive cycles and other codes that may stop regeneration are the typical
causes.

• The engine control module (ECM) detects that the average time between the last two completed DPF regenerations is greater than 20 hours, not including idle time.
• The regeneration engine run time trigger is based on a 14 hour threshold. Therefore, the regeneration event was commanded but never completed, causing DTC P1448 to set.

Recommended Parts

Below are some recommended auto parts to help you address the trouble code affecting your vehicle and get it running smoothly again:

>>> WORKPRO 582-piece Crimp Terminals, Wire Connectors, Heat Shrink Tube, Electrical Repair Kit
>>> GM Genuine Parts 12633238 Engine Control Module

Note: During the purchasing process, please check carefully whether the part you want to buy fits your car!

Reference Sources

Chevrolet P1448, DTCDECODE.