# Service bulletin 1804822

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: 10212383
- Published by NHTSA: 2022\-05\-31
- Manufacturer's number: 1804822
- Manufacturer's date: 2022\-03\-08
- NHTSA component: FUEL SYSTEM, GASOLINE; ELECTRICAL SYSTEM; SEATS; ENGINE

## NHTSA's summary

Flash: Powertrain Control Module \(PCM\) Updates This bulletin involves reprogramming the PCM with the latest available software. Customers may experience a Malfunction Indicator Lamp \(MIL\) illumination. Upon further investigation the technician may find one or more ofthe following DTCs: P0300 \- Multiple Cylinder Misfire.If DTC P0300 is present either alone or along with other DTCs listed within this bulletin the right intake camshaft MUST be replaced along with this software update \(only if DTC P0300 is present\). Refer to the detailedservice procedures available in DealerConnect\>Service Library under: Service Info\>09 \- Engine, 3.6L / Cylinder Head / Camshaft, Engine / Removal and Installation\>Right. If just the software flash was done without the right intake camshaft being replacedthe DTC P0300 may reoccur.If DTC P0300 is not present but other DTCs on this list below are present, performjust the software update. P0441 \- EVAP Purge System Performance. P258B \- Electronic Vacuum Pump Performance. C1252\-92 \- Vacuum Pump Control Circuit \- Performance Or Incorrect Operation. P0456 \- EVAP System Small Leak.If DTC P0456 is present use the wiTECH Small Leak Verification test \(SLVT\) to determine if a leak is present in the system. P1404 \- EGR Close Position Performance. P1206 \- Fuel Pump Control Module Open Circuit To Fuel Pump. Upon diagnosing the vehicle the technician may find DTC P1206 set before flashing the vehicle, the correct DTC will nowbe P025A \- Fuel Pump Module Control Circuit Open after the software update.In addition the customer may notice one or more of the following: The Anti\-Lock Brake System \(ABS\) light illuminates. The customer may notice an ability to shift into 1st gear at an unsafespeed\(MTX Only\). Cluster displays "Autopark Engaged" even when autopark is no longer active.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2022/MC-10212383-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2022/MC-10212383-9999.pdf)

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

## Components

Electrical system, Engine, Fuel system, Seats

## Trouble codes named

C1252, P025A, P0300, P0441, P0456, P1206, P1404, P258B

## Vehicles listed

- 2020 JEEP GLADIATOR

## Recalls for the same vehicles and component

- [24V652000](/recalls/nhtsa/24V652000.md), 2024-09-05: ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL
- [2020456](/recalls/tc/2020456.md), 2020-09-25: Seats And Restraints

## Other bulletins for the same vehicles and component

- [08\-358\-26](/bulletins/11038548.md), 2026-10-16, Service bulletin: ELECTRICAL SYSTEM. Flash: Drivetrain Control Module \(DTCM\) Updates Customers must experience a Malfunction Indicator Lamp \(MIL\) illumination and the vehicle must SYMPTOM: exhibit/set the following Diagnostic Trouble Code \(DTC\): ● C147B\-92 \- Front Axle Disconnect Sensor Performance or Incorrect Operation Customers may comment on one or more of the following: ● 4WD system warning lights, service messages, or flashing indicators are displayed in the Instrument Panel Cluster \(IPC\). ● The vehicle does not engage 4WD properly. This bulletin involves reprogramming the DTCM with the latest available software.
- [08\-358\-26](/bulletins/11038511.md), 2026-10-16, Service bulletin: ELECTRICAL SYSTEM. Flash: Drivetrain Control Module \(DTCM\) Updates Customers must experience a Malfunction Indicator Lamp \(MIL\) illumination and the vehicle must SYMPTOM: exhibit/set the following Diagnostic Trouble Code \(DTC\): ● C147B\-92 \- Front Axle Disconnect Sensor Performance or Incorrect Operation Customers may comment on one or more of the following: ● 4WD system warning lights, service messages, or flashing indicators are displayed in the Instrument Panel Cluster \(IPC\). ● The vehicle does not engage 4WD properly. This bulletin involves reprogramming the DTCM with the latest available software.
- [9100900](/bulletins/11037346.md), 2026-09-17, Service bulletin: ELECTRICAL SYSTEM; STRUCTURE:BODY. Passive Entry O/S Dr Handle Prior to replacing an inoperative passive entry door handle, perform Star Online S2623000040.
- [16C Combo Rev3](/bulletins/11036183.md), 2026-08-13, Warranty extension: ELECTRICAL SYSTEM. EMISSION RECALL – NORTH AMERICA Check Engine/Malfunction Indicator Lamp 16C The instrument panel cluster on about 32,587 of the above vehicles may have an inoperable check engine/malfunction indicator lamp \(CEL/MIL\). \(JT\) vehicles: CEL/MIL and cargo lamp indicator function are swapped. \(JL\) vehicles: CEL/MIL will not turn on. The CEL/MIL in and of itself will not affect emissions. However, if there was an emission issue that would require illumination of the CEL/MIL, the customer would not be alerted. The vehicle would be non\-compliant to the OBD II regulation.
- [08\-298\-26 REV. A](/bulletins/11036150.md), 2026-08-13, Service bulletin: ELECTRICAL SYSTEM. Instrument Panel Cluster \(IPC\) Blank XZ1 Warranty Extension Customers may experience the following: SYMPTOM: ● \*\*A blank electronic vehicle information center \(EVIC\) in the IPC. No information is displayed for the fuel level, temperature gauge, odometer, outside temperature, PRNDL and optional digital speedometer Fig. 1. IMPORTANT\! The analog speedometer and tachometer gauges continue to function normally Fig. 1\*\*. This bulletin involves replacing the IPC.
- [113809](/bulletins/11035998.md), 2026-08-06, Warranty extension: ELECTRICAL SYSTEM. ID\-26\-37 \(XZ1\) Instrument Panel Cluster \(IPC\) \- Select 2018 \- 2020 Jeep Wrangler \(JL\) and 2020 Jeep Gladiator \(JT\)
- [113813](/bulletins/11035997.md), 2026-08-06, Warranty extension: ELECTRICAL SYSTEM. D\-26\-17 \(XZ1\) Instrument Panel Cluster \(IPC\) \- Select 2018 \- 2020 Jeep Wrangler \(JL\) and 2020 Jeep Gladiator \(JT\)
- [08\-298\-26](/bulletins/11035973.md), 2026-08-06, Service bulletin: ELECTRICAL SYSTEM. Instrument Panel Cluster \(IPC\) Blank XZ1 Warranty Extension Customers may experience the following: SYMPTOM: ● A blank IPC display. No information is displayed for the speedometer, fuel level, temperature gauge, odometer, outside temperature and PRNDL. NOTE: The speedometer and tachometer continue to function normally. This bulletin involves replacing the IPC.
- [113271](/bulletins/11035078.md), 2026-07-18, Service bulletin: ENGINE. CORE – HEATER
- [113270](/bulletins/11035077.md), 2026-07-18, Service bulletin: ENGINE. CORE – HEATER

JSON: [/v1/bulletins/10212383](/v1/bulletins/10212383)

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