RAM
08-302-26
Manufacturer communications
- Publication date
- 2026-08-01
- Received by NHTSA
- 2026-08-06
- NHTSA record numbers
- 11035977
Manufacturer summary
Original wording in English
Flash: Electronic Shift Module (ESM) Updates Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must SYMPTOM: exhibit/set the following Diagnostic Trouble Code (DTC):
• U1057-00 - High Speed Fd-Can3 Communication Bus Performance. Customers may also comment on the following:
• If the vehicle has a low or drained battery and requires a jump start, once jump started, the vehicle will not shift out of Park. This bulletin involves reprogramming the ESM with the latest available software.
• U1057-00 - High Speed Fd-Can3 Communication Bus Performance. Customers may also comment on the following:
• If the vehicle has a low or drained battery and requires a jump start, once jump started, the vehicle will not shift out of Park. This bulletin involves reprogramming the ESM with the latest available software.
Reported code forms
Manufacturer wording
Source wording can vary by vehicle and suffix. It is shown as written, not as a universal diagnosis.
Ram
U1057-00High Speed Fd-Can3 Communication Bus PerformanceCheck vehicle applicability
A listed vehicle is a research lead. Confirm the engine, production range and software in the manufacturer's information.