# Service bulletin 18\-094\-22

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: 10214599
- Published by NHTSA: 2022\-06\-27
- Manufacturer's number: 18\-094\-22
- Manufacturer's date: 2022\-05\-10
- NHTSA component: POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE \(TCM/PCM/TECM\); ELECTRICAL SYSTEM; ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:GAS RECIRCULATION VALVE \(EGR VALVE\); POWER TRAIN:MANUAL TRANSMISSION:CONTROL MODULE \(TCM/PCM/TECM\)

## NHTSA's summary

Flash: Powertrain Control Module \(PCM\) Updates This bulletin involves reprogramming the Engine Control Module/Powertrain Control Module \(ECM/PCM\) 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: P0401\-00 \- EGR System Performance. P0299\-00 \- Turbocharger Underboost \(ETM Only\). P0755\-00 \- 2C Solenoid Circuit. P0765\-00 \- UD Solenoid Circuit. The following improvements are also included in this update: wiTECH PCM data improvements. wiTECH cylinder cut\-out routine, improvement

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2022/MC-10214599-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2022/MC-10214599-9999.pdf)

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

## Components

Electrical system, Engine, Exhaust and emissions, Transmission and driveline, Automatic transmission, EGR valve, Manual transmission, Transmission control module

## Trouble codes named

P0299, P0401, P0755, P0765

## Vehicles listed

- 2022 RAM 2500
- 2022 RAM 3500

## 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

- [S2321000007](/bulletins/10243164.md), 2023-10-02, Service bulletin: POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE \(TCM/PCM/TECM\); POWER TRAIN. Malfunction Indicator Lamp \(MIL\) Illumination. Diagnostic Trouble Codes \(DTCs\) P0944 ? Loss of Hydraulic Pump Prime, and P0868 ? Transmission Fluid Pressure Low, Set.
- [1801823](/bulletins/10234481.md), 2023-04-17, Service bulletin: POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE \(TCM/PCM/TECM\); ENGINE AND ENGINE COOLING. Flash: Powertrain Control Module \(PCM\) Updates Customer or technician may experience the following: ? \*\*Power Take Off \(PTO\) disable to high engine oil temperature \(DD and DP Cab Chassis only\)\*\*. ? Customer may complain of slow PTO idle ramp up. ? Message will appear ?Hot Oil? and exit high idle or PTO mode, when in high idle or PTO mode and running between 10\-30 minutes \(no load\). ? High frequency exhaust noise at idle after cold start. This bulletin involves reprogramming the PCM with the latest available software.
- [2103022](/bulletins/10230557.md), 2023-01-23, Service bulletin: POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE \(TCM/PCM/TECM\); ELECTRICAL SYSTEM. Transmission Control Module \(TCM\) Updates
- [1803522REVA](/bulletins/10227761.md), 2022-12-12, Service bulletin: ELECTRICAL SYSTEM; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE \(TCM/PCM/TECM\). Flash: Powertrain Control Module \(PCM\) Updates This bulletin involves reprogramming the PCM with the latest available software. The customer may experience one or more of the following: Customer may complain of slow PTO idle ramp up. Message will appear "Hot Oil" and exit high idle or PTO mode, when in high idle or PTO mode and running between 10\-30 minutes \(no load\). High frequency exhaust noise at idle after cold start.
- [1809422REVB](/bulletins/10227754.md), 2022-12-12, Service bulletin: POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE \(TCM/PCM/TECM\); ELECTRICAL SYSTEM; FUEL SYSTEM, DIESEL. Flash: Powertrain Control Module \(PCM\) Updates This bulletin involves reprogramming the Engine Control Module/Powertrain Control Module \(ECM/PCM\) 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 DTCs have been set: P0299\-00 \- Turbocharger Underboost. P026B\-00 \- Injection Timing Performance. P061B\-00 \- Internal Control Module Torque Calculation Performance. P1451\-00 \- Diesel Particulate Filter System Performance. P0755\-00 \- Shift Solenoid "B"\(DG7 Trans Sales Code\). P0765\-00 \- Shift Solenoid "D"\(DG7 Only\). P0401\-00 \- EGR System Performance. The following improvements are also included in this update:Improvements to cold temperature engine rpm fluctuation. Reduce audible engine flare during upshifts\(DG7 Only\). Improvements to help prevent OD clutch premature wear \(DG7 Only\). 1\-2\-1 gear hunting on grades while operating under high loads in areas of low traction \(e.g. rain, snow, ice or dirt\)\(DG7 Only\) wiTECH Fuel System Run\-Up Test routine Improvement. Idle stability Improvement. wiTECH PCM data improvements. wiTECH cylinder cut\-out routine, improvement.

JSON: [/v1/bulletins/10214599](/v1/bulletins/10214599)

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