JEEP, RAM

21-016-25 REV. B

2025-08-07 · NHTSA 11021838

A listed vehicle is a research lead. Confirm the engine, production range and software in the manufacturer's information.

Manufacturer summary

Original wording in English

Valve Body Replacement Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must exhibit/set one or more of the following Diagnostic Trouble Codes (DTCs): ● U0101 - Lost Communication With The Transmission Control Module (TCM). ● U0402 - Implausible Data Received From TCM. ● U0418 - Implausible Data Received From Brake System Control Module 1. Customers may also comment on the following: ● Vehicle will go in limp-in mode. After the vehicle enters limp-in mode and has been shifted into Park, the vehicle will not shift into a forward or reverse gear. This bulletin involves replacing the transmission valve body assembly.

Repeated filings are grouped only when make, bulletin number, publication date and complete summary agree. Original record numbers are retained. Older publications remain available, and an explicit later version is shown when established. Pre-1994 vehicle associations are separated from default results; an unspecified year does not mean all model years apply.