# Service bulletin 1807923

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: 10241133
- Published by NHTSA: 2023\-08\-21
- Manufacturer's number: 1807923
- Manufacturer's date: 2023\-06\-29
- NHTSA component: ENGINE AND ENGINE COOLING; ELECTRICAL SYSTEM

## NHTSA's summary

Engine Misfire P0300, P0301, P0302, P0303, P0304 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: ? P0300 \- Random Engine Misfire.8 ? P0301 \- Cylinder 1 Misfire. ? P0302 \- Cylinder 2 Misfire. ? P0303 \- Cylinder 3 Misfire. ? P0304 \- Cylinder 4 Misfire. Customers may also experience: ? Poor running/Engine misfire. This bulletin involves replacing the spark plugs.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2023/MC-10241133-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2023/MC-10241133-9999.pdf)

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

## Components

Electrical system, Engine

## Trouble codes named

P0300, P0301, P0302, P0303, P0304

## Vehicles listed

- 2023 DODGE HORNET

## Recalls for the same vehicles and component

- [23V623000](/recalls/nhtsa/23V623000.md), 2023-09-07: ELECTRICAL SYSTEM:12V/24V/48V BATTERY:CABLES; ELECTRICAL SYSTEM:PROPULSION SYSTEM: CABLES:FASTENER/CONNECTOR

## Other bulletins for the same vehicles and component

- [S2609000010](/bulletins/11034921.md), 2026-07-08, Service bulletin: ENGINE. Mis\-Machined Engine Block
- [9100852](/bulletins/11034918.md), 2026-07-08, Service bulletin: ENGINE. When long block is received, inspection needs to be performed per SOL S2609000010 before the repair begins. If the block machining is not complete according to information in SOL, a new long block will need to be ordered.
- [112639](/bulletins/11034912.md), 2026-07-08, Service bulletin: ENGINE. THROTTLE BODY – NONE
- [112640](/bulletins/11034911.md), 2026-07-08, Service bulletin: ENGINE. THROTTLE BODY – NONE
- [08\-252\-26](/bulletins/11034365.md), 2026-07-02, Service bulletin: ELECTRICAL SYSTEM; SEATS. Heated Seats and Heated Wheel Turn Off Or Become Disabled Customers may comment on the following: ● Customer may comment that their Heated Seats and Heated Steering Wheel will turn off or become disabled \(button grayed out on display screen\) while driving the vehicle.
- [08\-200\-26](/bulletins/11032828.md), 2026-05-20, Service bulletin: ELECTRICAL SYSTEM. Instrument Panel Cluster \(IPC\) Content Missing Or Screen Blank Customers may experience the following: ● IPC content missing, display abnormal or screen blank
- [08\-200\-26](/bulletins/11032651.md), 2026-05-13, Service bulletin: ELECTRICAL SYSTEM. Instrument Panel Cluster \(IPC\) Content Missing Or Screen Blank Customers may experience the following: ● IPC content missing, display abnormal or screen blank
- [08\-148\-26](/bulletins/11031428.md), 2026-04-22, Service bulletin: ELECTRICAL SYSTEM. The following software enhancement is available: ● This software update enables the feature Active Cabin Ventilation \(ACV\). 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 TBM software will be updated from 5.49.0, 5.53.0 or 5.43 to 5.53 software level. NOTE: National launch for this FOTA update is expected to begin: April 14, 2025.
- [S228A000025 REV.A](/bulletins/11029705.md), 2026-03-05, Service bulletin: ELECTRICAL SYSTEM. Harman R1H Uconnect 5 Radio Software Flash Error Codes
- [08\-394\-25 REV. A](/bulletins/11026677.md), 2025-12-17, Service bulletin: ELECTRICAL SYSTEM. Telematics Box Module \(TBM\) Backup Battery Replacement When DTC B1E21 Is Present Technicians may experience a Malfunction Indicator Lamp \(MIL\) illumination and the vehicle may exhibit/set the following Diagnostic Trouble Code \(DTC\): ● B1E21\-96 \- Backup Battery Component Internal Failure.

JSON: [/v1/bulletins/10241133](/v1/bulletins/10241133)

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