# Service bulletin 1802423

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: 10239971
- Published by NHTSA: 2023\-07\-31
- Manufacturer's number: 1802423
- Manufacturer's date: 2023\-05\-24
- NHTSA component: POWER TRAIN; ELECTRICAL SYSTEM

## NHTSA's summary

Flash: Powertrain Control Module \(PCM\) Updates 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 \(DTC\)s have been set: ? \*\*P0299 \- Turbocharger Underboost.\*\* ? P061B \- Internal Control Module Torque Calculation Performance. ? P0755 \- Shift Solenoid B \(DG7 Only\). ? P0765 \- Shift Solenoid D \(DG7 Only\). ? P0401 \- EGR System Performance. ? P0755 \- 2C Solenoid Circuit. ? P0765 \- UD Solenoid Circuit. ? P244A \- Diesel Particulate Filter Differential Pressure Too Low. ? P20EE \- SCR NOx Catalyst Efficiency Below Threshold \- Bank 1. ? P242F \- Diesel Particulate Filter Restriction \- Ash Accumulation. ? P1451 \- Diesel Particulate Filter System Performance. ? P2463 \- Diesel Particulate Filter Restriction \- Soot Accumulation Bank 1. ? P0607\-00 \- ECU Internal Performance. ? P0299\-00 \- Turbocharger Underboost. ? P1451\-00 \- Diesel Particulate Filter System Performance \(Sales Code ETL Only\).

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2023/MC-10239971-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2023/MC-10239971-9999.pdf)

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

## Components

Electrical system, Transmission and driveline

## Trouble codes named

P0299, P0401, P0607, P061B, P0755, P0765, P1451, P20EE, P242F, P244A, P2463

## Vehicles listed

- 2021 RAM 2500
- 2021 RAM 3500

## Recalls for the same vehicles and component

- [2023026](/recalls/tc/2023026.md), 2023-02-09: Electrical
- [23V060000](/recalls/nhtsa/23V060000.md), 2023-02-09: ELECTRICAL SYSTEM:WIRING:RELAYS/SOLENOIDS
- [2022644](/recalls/tc/2022644.md), 2022-11-10: Powertrain
- [22V835000](/recalls/nhtsa/22V835000.md), 2022-11-10: POWER TRAIN:AUTOMATIC TRANSMISSION
- [2021629](/recalls/tc/2021629.md), 2021-10-14: Electrical
- [21V798000](/recalls/nhtsa/21V798000.md), 2021-10-14: ELECTRICAL SYSTEM:WIRING:RELAYS/SOLENOIDS
- [2021138](/recalls/tc/2021138.md), 2021-03-11: Electrical
- [21V163000](/recalls/nhtsa/21V163000.md), 2021-03-11: ELECTRICAL SYSTEM

## Other bulletins for the same vehicles and component

- [9100901](/bulletins/11037344.md), 2026-09-17, Service bulletin: STRUCTURE:BODY; ELECTRICAL SYSTEM. Passive Entry O/S Dr Handle Prior to replacing an inoperative passive entry door handle, perform Star Online S2623000040.
- [113744](/bulletins/11035981.md), 2026-08-06, Service bulletin: ENGINE; ELECTRICAL SYSTEM. SENSOR \- TURBOCHARGER SPEED
- [113742](/bulletins/11035980.md), 2026-08-06, Service bulletin: ENGINE; ELECTRICAL SYSTEM. SENSOR \- TURBOCHARGER SPEED
- [113069](/bulletins/11034910.md), 2026-07-08, Service bulletin: STRUCTURE:BODY; ELECTRICAL SYSTEM. SWITCH – HEADLAMP
- [113070](/bulletins/11034909.md), 2026-07-08, Service bulletin: ELECTRICAL SYSTEM; STRUCTURE:BODY. SWITCH – HEADLAMP
- [9100841 Rev 1](/bulletins/11034380.md), 2026-07-02, Service bulletin: POWER TRAIN. If customer concern diagnosis leads to suspect u\-joint issue with the prop shaft, u\-joint service kit should be utilized to fix concern. Prop shaft replacement would not be required.
- [9100841](/bulletins/11034338.md), 2026-07-02, Service bulletin: POWER TRAIN. HD Front and Rear Prop Shafts Increase U\-Joint Usage If customer concern diagnosis leads to suspect u\-joint issue or failure with the prop shaft, u\-joint service kit should be utilized to fix concern. Prop shaft replacement would not be required.
- [S1623000028 Rev. K](/bulletins/11033975.md), 2026-06-18, Service bulletin: ELECTRICAL SYSTEM; STRUCTURE:BODY. Outside Power Fold Rearview Mirror Noise Or Loose At Pivot. Mirror Contacts Door Window Glass In The Folded Position.
- [9100835](/bulletins/11033957.md), 2026-06-18, Service bulletin: ELECTRICAL SYSTEM. Prior to replacing an inoperative passive entry door handle, perform Star Online S2623000040.
- [S2623000040](/bulletins/11033896.md), 2026-06-16, Service bulletin: STRUCTURE:BODY; ELECTRICAL SYSTEM. Passive Entry Exterior Door Handle Inoperative When Touched To Lock And Or Unlock.

JSON: [/v1/bulletins/10239971](/v1/bulletins/10239971)

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