2022 Jeep Wrangler TCM Software Update for MIL and DTCs

Owners of 2022 Jeep Wrangler vehicles may experience issues related to the Transmission Control Module (TCM) software, leading to warning lights and diagnostic trouble codes. This Technical Service Bulletin (TSB) 21-022-25, dated March 14, 2025, provides a software update to address these concerns for the 2022 Jeep Wrangler manufacturer_communication.

This bulletin applies to 2022 Jeep Wrangler (JL) models equipped with a 3.6L V6 24V VVT Engine UPG I W/ESS (Sales Code ERC) and an 8-Speed Auto 850RE Transmission (Sales Code DFT).

Symptoms

Owners may notice a "Malfunction Indicator Lamp (MIL) illumination" on the dashboard. Additionally, one or more of the following symptoms may occur:

• The "check engine light illuminates."
• "Overheating of the transmission fluid."

Fault Codes / DTCs

When these symptoms are present, technicians may find specific Diagnostic Trouble Codes (DTCs) stored in the vehicle's system:

Code	Description
P1DB7-00	Torque Converter Clutch Performance
P0701	Transmission Control System Range/Performance

Diagnosis

To diagnose the issue, a Scan Tool (wiTECH) with appropriate Diagnostic Procedures from DealerCONNECT/Service Library should be used. The primary cause for these symptoms and DTCs is identified as TCM software. If the customer's concern matches the symptoms listed, the repair procedure should be followed.

Repair Procedure Summary

The repair involves reprogramming the Transmission Control Module (TCM) with the latest available software. This software update is designed to resolve the underlying TCM software issues that lead to the reported symptoms and DTCs. After the reprogramming, any Diagnostic Trouble Codes (DTCs) that may have been set in any modules due to the reprogramming process will be cleared using the wiTECH application.

Required Tools or Parts

To perform this repair, technicians will need a compatible diagnostic scan tool such as "wiTECH or Equivalent."

Important Warnings

This bulletin, TSB 21-022-25, supersedes Technical Service Bulletin (TSB) 21-029-22, which was issued on August 23, 2022. The current bulletin includes revisions such as a new DTC, new customer symptoms, and a new Labor Operation Number (LOP).

During the flash process, it is crucial to install a battery charger to ensure sufficient battery voltage. If the flash process is interrupted or aborted, it must be restarted. If issues arise when flashing a module using the wiTECH Diagnostic Application, a ticket should be submitted to the Helpdesk.

Owner Action

If you own a 2022 Jeep Wrangler and are experiencing a "Malfunction Indicator Lamp (MIL) illumination," "check engine light illuminates," or "Overheating of the transmission fluid," especially if accompanied by DTCs P1DB7-00 or P0701, you should contact your authorized Jeep dealership. The repair, which involves reprogramming the TCM, is reimbursable within the provisions of the warranty. This 2022 Jeep Wrangler manufacturer_communication is a software update and typically takes approximately 0.2 hours of labor.

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Source: NHTSA ID: 11015662