RAM
18-053-26
Manufacturer communications
- Publication date
- 2026-05-05
- Received by NHTSA
- 2026-05-13
- NHTSA record numbers
- 11032654 · 11032831
Multiple filings of the same bulletin are grouped here; original record numbers remain available.
Manufacturer summary
Original wording in English
Flash: Powertrain Control Module (PCM) Updates Customers may experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle may exhibit/set the following Diagnostic Trouble Code (DTC):
• P219A - Bank 1 Air-Fuel Ratio Imbalance Bank 1. Customers may also comment on the following:
• **Potential under run or stall when the vehicle utilizes the Trailer Reverse Steering Control feature and is connected to a trailer attempting to backup.** This bulletin involves reprogramming the PCM with the latest available software.
• P219A - Bank 1 Air-Fuel Ratio Imbalance Bank 1. Customers may also comment on the following:
• **Potential under run or stall when the vehicle utilizes the Trailer Reverse Steering Control feature and is connected to a trailer attempting to backup.** This bulletin involves reprogramming the PCM 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
P219ABank 1 Air-Fuel Ratio Imbalance Bank 1Check vehicle applicability
A listed vehicle is a research lead. Confirm the engine, production range and software in the manufacturer's information.
| Make | Model | Model year |
|---|---|---|
| Ram | 1500 | 2021 |