TSBs

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.

Mike Mavrigian

Related To:

Mitchell 1

Reprogram the ECM. Refer to K20 Engine Control Module, programming and setup in the service manual.

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.