Reprograming Cadillac ECM

May 22, 2025
Certain 2020-2021 Cadillac XT4 vehicles equipped with a 2.0L diesel engine may have a condition where the diesel particulate filter (DPF) sensor indicates a high soot loading.

Certain 2020-2021 Cadillac XT4 vehicles equipped with a 2.0L diesel engine may have a condition where the diesel particulate filter (DPF) sensor indicates a high soot loading.

This could cause a DTC P244B to set, resulting in reduced power. Reprogram the ECM. Refer to K20 Engine Control Module, programming and setup in the service manual.

About the Author

Mike Mavrigian | Motor Age Editor

Mike Mavrigian has written thousands of automotive technical magazine articles involving a variety of  specialties, from engine building to wheel alignment, and has authored more than a dozen books that crisscross the automotive spectrum. Mike operates Birchwood Automotive, an Ohio shop that builds custom engines and performs vintage vehicle restorations. The shop also features a professional photo studio to document projects and to create images for articles and books.

Sponsored Recommendations

Gain expert insight into today’s evaporative emission systems and why OE-matched EVAP components are crucial for performance and compliance. See how Standard® delivers precision...
There is a difference in gas fuel injectors. Learn why Under the Hood’s Russ Evans uses Standard Fuel Injectors on his customer’s vehicles.
Hear what senior autotechs have to say about the AIRCAT Nitrocat 1056-XL compact impact wrench. They’ll provide their reviews on tools they own and have been using every day on...
See how the new AIRCAT HVLP Gravity Feed Spray Gun delivers high-quality finishes with reduced overspray designed for efficiency and control.

Voice Your Opinion!

To join the conversation, and become an exclusive member of Vehicle Service Pros, create an account today!