2022 Jeep Wrangler P1DB7-00 / P0701 TCM Software Update

Owners of the 2022 Jeep Wrangler may experience a Malfunction Indicator Lamp (MIL) illumination, accompanied by specific Diagnostic Trouble Codes (DTCs). This issue, detailed in Technical Service Bulletin (TSB) 21-022-25 REV. A, is primarily caused by outdated Transmission Control Module (TCM) software.

This TSB specifically applies to 2022 Jeep Wrangler (JL) vehicles 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). The recommended solution for this 2022 Jeep Wrangler TCM update is to reprogram the TCM with the latest available software.

Symptoms

Customers may observe a Malfunction Indicator Lamp (MIL) illumination on the dashboard. In addition to the MIL, the vehicle may exhibit one or more of the following symptoms:

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

Fault Codes / DTCs

When diagnosing the issue, technicians will find specific Diagnostic Trouble Codes (DTCs) stored in the vehicle's system. These codes indicate the nature of the problem:

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

Diagnosis / Trigger Conditions

To confirm the issue and proceed with the 2022 Jeep Wrangler TCM update, a scan tool like wiTECH should be used. Technicians will verify that all related systems are functioning correctly and that the reported symptoms match those described in TSB 21-022-25 REV. A. If other DTCs or symptom conditions are present, they must be addressed before proceeding with the bulletin's repair procedure.

Repair Procedure Summary

The repair involves reprogramming the Transmission Control Module (TCM) with the latest software. This is a crucial step to resolve the underlying software issue causing the MIL illumination and DTCs P1DB7-00 and P0701.

1. Prepare the vehicle: Install a battery charger to ensure a stable and sufficient battery voltage throughout the flash process.
2. Reprogram the TCM: Use the wiTECH Diagnostic Application to flash the TCM with the most current software version. If any issues arise during this process, a helpdesk ticket should be submitted.
3. Clear DTCs: After the reprogramming is complete, clear any Diagnostic Trouble Codes that may have been set in any modules. The wiTECH application will automatically present all DTCs for clearing.

Required Tools or Parts

To perform this service, technicians will need:

• wiTECH or Equivalent: A diagnostic scan tool capable of performing module reprogramming.

Important Warnings

• Battery Voltage: It is critical to install a battery charger to maintain sufficient battery voltage during the flash process. Failure to do so could lead to module damage or an incomplete update.
• Interrupted Flash: If the reprogramming process is interrupted or aborted for any reason, the flash procedure must be restarted from the beginning.

Owner Action

If your 2022 Jeep Wrangler is experiencing a Malfunction Indicator Lamp (MIL) illumination, a check engine light, or symptoms of transmission fluid overheating, and you suspect it might be related to DTCs P1DB7-00 or P0701, you should schedule an appointment with an authorized Jeep dealer. This repair, identified by labor operation 18-19-05-SL and failure code CC, is reimbursable under the provisions of the warranty.

NHTSA ID: 11016276