# Service bulletin 1807823

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

- Type: Service bulletin
- NHTSA id: 10241127
- Published by NHTSA: 2023\-08\-21
- Manufacturer's number: 1807823
- Manufacturer's date: 2023\-06\-28
- NHTSA component: POWER TRAIN:MANUAL TRANSMISSION:CONTROL MODULE \(TCM/PCM/TECM\); ELECTRICAL SYSTEM; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE \(TCM/PCM/TECM\); POWER TRAIN

## NHTSA's summary

Flash: Powertrain Control Module \(PCM\) Updates Customers may experience a Malfunction Indicator Lamp \(MIL\) illumination. Upon further investigation, a technician may find one or more of the following DTCs have been set: ? U0418\-00 \- Implausible Data Received From Brake System Control Module 1. ? P061A \- Level 2 Torque Performance. Customers may also experience the following: ? \*\*Driveline bumps and rumbles when lightly applying the accelerator pedal in traffic or at other low vehicle speeds such as parking lot maneuvers.\*\* ? Transmission hard upshifts, rough/bump during low gear 1\-2 and 2\-3 at 40\-64 kph \(25\-40 mph\). This bulletin involves reprogramming the PCM with the latest available software.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2023/MC-10241127-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2023/MC-10241127-9999.pdf)

The document is the manufacturer's. This site does not hold it.

## Components

Electrical system, Transmission and driveline, Automatic transmission, Manual transmission, Transmission control module

## Trouble codes named

P061A, U0418

## Vehicles listed

- 2021 RAM 4500
- 2021 RAM 5500

## Other bulletins for the same vehicles and component

- [Y17](/bulletins/10223477.md), 2022-10-17, Service bulletin: POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE:SOFTWARE; POWER TRAIN. Customer Satisfaction Notification Y17 Transmission Software Update
- [S2125000002](/bulletins/10221288.md), 2022-09-26, Service bulletin: POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE \(TCM/PCM/TECM\). Customer complaint includes a Mil\-on condition. Upon further investigation, one or more of the following fault codes may be set in the PCM:
- [18\-072\-21](/bulletins/10218565.md), 2022-08-22, Service bulletin: EXTERIOR LIGHTING; FUEL SYSTEM, GASOLINE; ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE \(ECU/ECM\):SOFTWARE; FUEL SYSTEM, DIESEL; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE \(TCM/PCM/TECM\); ELECTRICAL SYSTEM; BACK OVER PREVENTION; SERVICE BRAKES, HYDRAULIC. Flash: Powertrain Control Module \(PCM\) Updates This bulletin involves reprogramming the Engine Control Module \(ECM\) / Powertrain Control Module \(PCM\) with the latest available software. Customers may experience a Malfunction Indicator Lamp \(MIL\) illumination. Upon further investigation the technician may find that one or more of the following Diagnostic Trouble Codes \(DTCs\) have been set: P0607\-00 \- ECU Internal Performance. P0299\-00 \- Turbocharger Underboost. P1451\-00 \- Diesel Particulate Filter System Performance. The following improvements are also included in this update: Oil pressure switch modifications. Urea \(DEF fliud\) level sensor calibration update, to help prevent bumps in DEF level gauge.
- [S2125000002](/bulletins/10212447.md), 2022-05-31, Service bulletin: POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE \(TCM/PCM/TECM\). Customer complaint includes a Mil\-on condition. Upon further investigation, one or more of the following fault codes may be set in the PCM:

JSON: [/v1/bulletins/10241127](/v1/bulletins/10241127)

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