Service bulletin S2403000005 REV.A

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.

The communication, as NHTSA indexes it (as of 2026-10-19)
Type	Service bulletin
NHTSA id	11025033
Published by NHTSA	2025-11-05
Manufacturer's number	S2403000005 REV.A
Manufacturer's date	2025-11-01
NHTSA component	POWER TRAIN

NHTSA's summary

Malfunction Indicator Lamp (MIL) Illumination And Service Transmission Message Displayed. Diagnostic Trouble Code (DTC) P0607-ECU Internal Performance

The document

The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.

Components

Transmission and driveline

Trouble codes named

P0607

Vehicles listed
JEEP GRAND WAGONEER	2024
JEEP WAGONEER	2024

Listing a model year does not mean every vehicle of it is concerned: the document says which.

Recalls for the same vehicles and component
2025450	2025-09-04. Powertrain

A recall listed here may apply to some of the same vehicles. Only the manufacturer can say whether it applies to one vehicle.

Other bulletins for the same vehicles and component
18-070-26	2026-07-29. Service bulletin. Flash: Powertrain Control Module (PCM) Updates Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must SYMPTOM: exhibit/set one or more of the following Diagnostic Trouble Codes (DTCs): ● U0104-00 - Lost Communication With Cruise Control Module (NA Market Only) (In Active or Stored status). ● U0405-00 - Invalid Data Received From Cruise Control Module (NA Market Only) (In Active or Stored status). NOTE: Vehicles setting DTCs U0405-00 and U0104-00 may experience an inability to be cleared. ● P2AF6-00 - Dual Starter Relay Stuck (in active or stored status). ● P1CEA - Boost Side EVAP Purge System Performance (in active or stored status). ● P2C90-00 - Crankcase Ventilation System - Hose "A" Disconnected (in active or stored status). ● P0111-00 - Intake Air Temperature Sensor 1 Circuit Range Performance Bank 1 (in active or stored status). ● P0071-00 - Ambient Air Temperature Sensor Performance (in active or stored status). ● P0325-00 - Knock/Combustion Vibration Sensor 1 Circuit (in active or stored status). ● P0072-00 - Ambient Air Temperature Sensor Circuit "A" Low (in active or stored status). ● P0073-00 - Ambient Air Temperature Sensor Circuit "A" High (in active or stored status). ● P0011-00 - Bank 1 Camshaft 1 Position Timing Over Advanced Or (in active or stored status). ● P25E4-00 - B Camshaft Position - Unable To Achieve Locked Position Bank 1 (in active or stored status). ● U0673-00 - Lost Communication With Ion Sense Module (in active or stored status). ● P05BD-00 - Stop-Start Mode Switch Range/Performance (in active or stored status). ● P06DD-00 - Engine Oil Pressure Control Circuit Performance/stuck Off (in active or stored status). ● P0116-00 - Engine Coolant Temperature Sensor 1 Performance (in active or stored status). ● P00C6-00 - Fuel Rail Pressure Too Low - Engine Cranking (in active or stored status). ● P0330-00 - Knock/Combustion Vibration Sensor 2 Circuit (in active or stored status). This bulletin involves inspecting and possibly reprogramming the PCM with the latest available software.
S2621000003 REV.A	2026-03-18. Service bulletin. The vehicle will exhibit a service transmission/check engine warning indicator for the following transmission models: 845RE, 8HP45, 850RE, 8HP50, 8HP70, 8HP75, 8HP75-PHEV, 8HP75-LCV, 8HP90, 8HP95. Transmissions may exhibit the following diagnostic codes: P07E4, P1DB2, P0716, P1B14, P0733, P1D90, P1DB7, P1B13.
S2621000003	2026-03-05. Service bulletin. Service transmission/check engine warning indicator for the 850RE, 8HP50, 8HP70, 8HP75, 8HP75-PHEV transmissions that have fault codes P07E4, P1DB2, P0716, P1B14, P0733, P1D90, P1DB7, P1B13.
08-368-25 REV. A	2026-01-07. Service bulletin. Drivetrain Control Module (DTCM) Software Update Customers may experience one or more of the following: ● Rear axle bind during slow speed turning. Feels like the 4WD is active. ● While moving above 5 kph (3.1 mph) transmission goes into limp mode This bulletin involves reprogramming the DTCM to the latest software level.
9100672 Rev 3	2025-10-29. Service bulletin. Replacement components for transfer case are no longer available. To repair issue, use the following part numbers and follow the I-sheet instructions for assembly: 68738079AA - HOUSING 68738084AA - CAM 68738085AA - GEAR 68737112AA - PLATE Please note that the part numbers listed here are transfer case components, not full transfer case part numbers.
9100437Rev1	2025-10-29. Service bulletin. The service shifter message comes on in the cluster and the lever gets stuck in park "P" and it can be present the follwoing DTC: - U11E3 - TCM Lost communication with ESM on D-PT CAN - U0103 - Lost communication with Electric Gear Shift Module - U0101- Lost communication with DTCM - U0418 - Implausible Data Received From Brake System Control Module - U0402 - Implausible data received from TCM **NOTE: Prior any shifter replacement Refer to TSB-21-016-25 2024-2025 WS - Valve Body Replacement. Recommended Diagnosis procedure: 1. Confirm if U0101 -Lost Communication with TCM or U0418 -Implausible Data Received From Brake System Control Module are present, if so check the Valve Body CAN Terminals any corrosion. 2. Check the wiring connectors between the ESM and the TCM and check voltage. 3. Check the pin header for the ESM for any bent pins. 4. If wiring and voltage are good and the DTCs (U11E3 - TCM Lost communication with ESM on D-PT CAN & U0103 - Lost communication with Electric Gear Shift Module) are still present, erase them with the scan tool. Reset ECU. 5. if DTCs for loss communication are still active at the ESM and you are still unable to shift then replace the Shifter module.
21-016-25 REV. C	2025-08-21. Service bulletin. Valve Body Replacement Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must exhibit/set one or more of the following Diagnostic Trouble Codes (DTCs): ● U0101 - Lost Communication With The Transmission Control Module (TCM). ● U0402 - Implausible Data Received From TCM. ● U0418 - Implausible Data Received From Brake System Control Module 1. Customers may also comment on the following: ● Vehicle will go in limp-in mode. After the vehicle enters limp-in mode and has been shifted into Park, the vehicle will not shift into a forward or reverse gear This bulletin involves replacing the transmission valve body assembly.
9100641	2025-08-13. Service bulletin. Symptoms/Condition: Shifter reports loss communication AND NO OTHER MODULES report the condition. Diagnostic: Please make sure ONLY shifter reports loss communication. If there are other modules reporting loss communication, then follow the existing service procedure Repair Procedure: 1. Verify Complaint - ESM reports a Loss of Communication (LOC) DTC, but no other modules do. - If multiple modules report the same LOC, the ESM is not the cause (its not a gateway module). 2. Read DTCs - Relevant codes: U0101, U0140, U0155, U0129, U11C3, U0402, U0422, U0423, U0415, U145D. - If multiple LOC DTCs are present: a. Check battery health, system voltage, and TCM (including valve body). b. If TCM goes offline, ESM may falsely report LOC DTCs. 3. Check Environmental Data - Look for voltage/system issues at the same mileage. a. If DTCs clear, do not replace ESM. b. If not, inspect: b.1 Module connectors/pins: If damaged, dont repair shifter. b.2 TCM connectors/pins: Same rule. b.3 AGSM connectors/pins: If damaged, repair shifter. b.4 AGSM wiring harness: If damaged, dont repair shifter. 4. Review Past Service - Confirm battery and TCM-related repairs are still effective. a. If not, fix and clear DTCs. b. If yes, continue. 5. Check for Other LOCs - If other modules report LOC to the same module, inspect that module. - If not, repair the AGSM. Additional Description: - The ESM only communicates with the TCM and is fully controlled by it. - In non-combustion engines, the TCM is replaced by the PCM. - If a stored DTC in the ESM disappears and doest return, do not replace the ESM.
21-016-25 REV. B	2025-08-13. Service bulletin. Valve Body Replacement Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must exhibit/set one or more of the following Diagnostic Trouble Codes (DTCs): ● U0101 - Lost Communication With The Transmission Control Module (TCM). ● U0402 - Implausible Data Received From TCM. ● U0418 - Implausible Data Received From Brake System Control Module 1. Customers may also comment on the following: ● Vehicle will go in limp-in mode. After the vehicle enters limp-in mode and has been shifted into Park, the vehicle will not shift into a forward or reverse gear. This bulletin involves replacing the transmission valve body assembly.
9100576	2025-05-29. Service bulletin. Transfer Case Motor Gear: Confirm the attachment points from the wiring routes when they inspect a shift motor on the t-case. Review the connection of the connector X238A, make sure it's fully seated and that the lever is fully locked on the connector.