# Service bulletin 1800324

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: 10251852
- Published by NHTSA: 2024\-03\-18
- Manufacturer's number: 1800324
- Manufacturer's date: 2024\-01\-17
- NHTSA component: ELECTRICAL SYSTEM; FUEL SYSTEM, GASOLINE; POWER TRAIN:MANUAL TRANSMISSION:CONTROL MODULE \(TCM/PCM/TECM\); POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE \(TCM/PCM/TECM\)

## 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 one or more of the following Diagnostic Trouble Codes \(DTCs\) have been set: ? \*\*P00C6 \- Fuel Rail Pressure Too Low \- Engine Cranking Bank 1. ? P06DD \- Engine Oil Pressure Control Circuit Performance/Stuck Off. ? P0461 \- Fuel Level Sensor "A" Circuit Range/Performance.\*\* ? P2C90\-00 \- Crankcase Ventilation System \- Hose "A" Disconnected. ? P0604\-00 \- Internal Control Module Random Access Memory Ram Error. ? P060C\-00 \- Internal Control Module Main Processor Performance. This bulletin involves reprogramming the PCM with the latest available software.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2024/MC-10251852-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2024/MC-10251852-9999.pdf)

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

## Components

Electrical system, Fuel system, Transmission and driveline, Automatic transmission, Manual transmission, Transmission control module

## Trouble codes named

P00C6, P0461, P0604, P060C, P06DD, P2C90

## Vehicles listed

- 2023 JEEP GRAND WAGONEER
- 2023 JEEP WAGONEER

## Recalls for the same vehicles and component

- [26V413000](/recalls/nhtsa/26V413000.md), 2026-06-30: POWER TRAIN:AUTOMATIC TRANSMISSION:GEAR POSITION INDICATION \(PRNDL\)

## Other bulletins for the same vehicles and component

- [S2325000008](/bulletins/10248868.md), 2024-01-16, Service bulletin: POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE \(TCM/PCM/TECM\); ELECTRICAL SYSTEM. Mil\-On/Check Engine Lamp\-On with ANY DTCs. Freeze frame data from the powertrain control module \(PCM\).
- [S2321000008](/bulletins/10248546.md), 2024-01-08, Service bulletin: POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE \(TCM/PCM/TECM\); EXTERIOR LIGHTING. Malfunction Indicator Lamp \(MIL\) Illumination, Diagnostic Trouble Codes \(DTCs\) P0731 ? Gear 1 Shift Incorrect Ratio, And/Or P07D9 ? Gear Shift Incorrect Ratio, Set.
- [1810423](/bulletins/10247492.md), 2023-12-18, Service bulletin: POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE \(TCM/PCM/TECM\). Flash: Powertrain Control Module \(PCM\) Updates Customers may experience a Malfunction Indicator Lamp \(MIL\) illumination. Upon further investigation the technician may find one or more of the following Diagnostic Trouble Codes \(DTCs\) have been set: ? P2C90\-00 \- Crankcase Ventilation System \- Hose "A" Disconnected. ? P0604\-00 \- Internal Control Module Random Access Memory Ram Error. ? P060C\-00 \- Internal Control Module Main Processor Performance. This bulletin involves reprogramming the PCM with the latest available software.
- [1804023](/bulletins/10239947.md), 2023-07-31, Service bulletin: POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE \(TCM/PCM/TECM\); ELECTRICAL SYSTEM. Flash: Powertrain Control Module \(PCM\) Updates Customers may experience a Malfunction Indicator Lamp \(MIL\) illumination. Upon further investigation the technician may find one or more of the following DTCs have been set: ? \*\*P0300\-00 \- Multiple Cylinder Misfire. ? P0301\-00 \- Cylinder 1 Misfire Detected. ? P0302\-00 \- Cylinder 2 Misfire. ? P0303\-00 \- Cylinder 3 Misfire ? P0304\-00 \- Cylinder 4 Misfire. ? P0305\-00 \- Cylinder 5 Misfire. ? P0306\-00 \- Cylinder 6 Misfire.\*\* ? P05CC\-00 \- Cold Start A Camshaft Position Timing Performance Bank 1. Customer may also experience the following: ? Poor or insufficient A/C performance during towing or other high torque maneuvers. ? Belt chirp is heard at startup or when A/C cycles on. This bulletin involves reprogramming the PCM with the latest available software.
- [1805923](/bulletins/10239943.md), 2023-07-31, Service bulletin: ELECTRICAL SYSTEM; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE \(TCM/PCM/TECM\). Flash: Powertrain Control Module \(PCM\) Updates Customers may experience the following: ? Poor or reduced air conditioning performance during wide open throttle or heavy acceleration. This bulletin involves reprogramming the PCM with the latest available software.
- [1804023](/bulletins/10236899.md), 2023-05-30, Service bulletin: POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE \(TCM/PCM/TECM\); ELECTRICAL SYSTEM; POWER TRAIN. Flash: Powertrain Control Module \(PCM\) Updates Customers may experience a Malfunction Indicator Lamp \(MIL\) illumination. Upon further investigation the technician may find the following Diagnostic Trouble Code \(DTC\) has been set: ? P05CC\-00 \- Cold Start A Camshaft Position Timing Performance Bank 1. Customer may also experience the following: ? Poor or insufficient A/C performance during towing or other high torque maneuvers. ? Belt chirp is heard at startup or when A/C cycles on. This bulletin involves reprogramming the PCM with the latest available software.

JSON: [/v1/bulletins/10251852](/v1/bulletins/10251852)

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