# Service bulletin 18\-072\-21

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: 10218565
- Published by NHTSA: 2022\-08\-22
- Manufacturer's number: 18\-072\-21
- Manufacturer's date: 2021\-08\-12
- NHTSA component: 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

## NHTSA's summary

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.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2021/MC-10218565-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2021/MC-10218565-9999.pdf)

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

## Components

Brakes, Driver assistance, Electrical system, Engine, Fuel system, Lighting, Transmission and driveline, Automatic transmission, Backup camera, Engine control module, Transmission control module

## Trouble codes named

P0299, P0607, P1451

## Vehicles listed

- 2021 RAM 3500
- 2021 RAM 4500
- 2021 RAM 5500

## Recalls for the same vehicles and component

- [22V835000](/recalls/nhtsa/22V835000.md), 2022-11-10: POWER TRAIN:AUTOMATIC TRANSMISSION

## Other bulletins for the same vehicles and component

- [103289](/bulletins/11014887.md), 2025-03-04, Service bulletin: BACK OVER PREVENTION: WARNINGS; LANE DEPARTURE: BLIND SPOT DETECTION. CAMERA \- REAR VIEW
- [S2208000045 REV.B](/bulletins/11011774.md), 2024-12-11, Service bulletin: BACK OVER PREVENTION: REARVIEW SYSTEM BRAKING. Backup Camera Poor Image Quality Inspection
- [0806423](/bulletins/10248049.md), 2024-01-02, Service bulletin: BACK OVER PREVENTION:SOFTWARE. Radio Over The Air Updating to QR40.12 Software Version Mobile Wi\-Fi inoperative upon start up. ? Hotspot gives 9No Internet9 connection message on phone, when trying to connect to a device. This bulletin provides information regarding the latest Firmware Over The Air \(FOTA\) update and provides the service technician an overview of the steps a customer will need to take to complete the update. The radio software will be updated from QR39.7 to QR40.12. NOTE: National launch for this FOTA update is expected to begin March 10, 2023. DISCUSSION: Vehicles sold in the U.S. and Canada can now receive software updates ?over\-the\-air?. Updates to software will occur in a phased roll\-out. The software is updated through the built\-in cellular modem in the radio.
- [1801723](/bulletins/10248003.md), 2024-01-02, Service bulletin: POWER TRAIN; BACK OVER PREVENTION; ELECTRICAL SYSTEM; AIR BAGS. Flash: Powertrain Control Module \(PCM\) Updates Customer or technician may experience the following: ? High frequency exhaust noise at idle after cold start. ? Power Take Off \(PTO\) disable to high engine oil temperature. ? Multiple Displacement System \(MDS\) transition causing a transmission clunk noise under light throttle when coasting in fourth gear. This bulletin involves reprogramming the PCM with the latest available software.
- [S1808000097](/bulletins/10243157.md), 2023-10-02, Service bulletin: BACK OVER PREVENTION:DISPLAY FUNCTION; BACK OVER PREVENTION. Back\-Up Camera Inoperative Complaints, Radio Display Blue or Blank When Placed in Reverse
- [1807823](/bulletins/10241127.md), 2023-08-21, Service bulletin: POWER TRAIN:MANUAL TRANSMISSION:CONTROL MODULE \(TCM/PCM/TECM\); ELECTRICAL SYSTEM; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE \(TCM/PCM/TECM\); POWER TRAIN. 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.
- [1801723](/bulletins/10234476.md), 2023-04-17, Service bulletin: BACK OVER PREVENTION; AIR BAGS; POWER TRAIN; ELECTRICAL SYSTEM. Flash: Powertrain Control Module \(PCM\) Updates Customer or technician may experience the following: ? High frequency exhaust noise at idle after cold start. ? Power Take Off \(PTO\) disable to high engine oil temperature. ? Multiple Displacement System \(MDS\) transition causing a transmission clunk noise under light throttle when coasting in fourth gear. This bulletin involves reprogramming the PCM with the latest available software.
- [08\-022\-23](/bulletins/10231792.md), 2023-02-13, Service bulletin: BACK OVER PREVENTION:SOFTWARE. Radio Over The Air Updating to 40.12 Software Version Mobile Wi\-Fi inoperative upon start up. Hotspot gives 9No Internet9 connection message on phone when trying to connect to a device. This bulletin provides information regarding the latest Firmware Over The Air \(FOTA\) update and provides the service technician an overview of the steps a customer will need to take to complete the update. The radio software will be updated from 39.5 to 40.12.
- [S238A000003](/bulletins/10231741.md), 2023-02-13, Service bulletin: BACK OVER PREVENTION. Backup Camera Blue Screen After Flat Bed Install
- [S1623000028 Rev.](/bulletins/10231735.md), 2023-02-13, Service bulletin: VEHICLE SPEED CONTROL; BACK OVER PREVENTION; POWER TRAIN; VISIBILITY; PARKING BRAKE. Outside Power Fold Rearview Mirror Noise Or Loose At Pivot. Mirror Contacts Door Window Glass In The Folded Position.

JSON: [/v1/bulletins/10218565](/v1/bulletins/10218565)

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