"Flash: Powertrain Control Module (PCM) Enhancements Customers must experience a Malfunction Indicator...
Jeep technical service bulletin 18-022-24 REV. A for 2021 Jeep Wrangler.
- Bulletin number
- 18-022-24 REV. A
- Component
- Power train
- Summary
- "Flash: Powertrain Control Module (PCM) Enhancements 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): ● U0402-00 - Implausible Data Received From TCM. ● U145D - Implausible Data Received From TCM On D-PT. Customers may experience one or more of the following: ● Noticeable oil life degradation when fuel and oil refresh mode active. ● Vehicle may not be able to enter electric mode driving while Fuel Oil Refresh Mode (FORM) is active. ● FORM staying on too long. Other software enhancement included with this update: ● On Board Fuel Consumption Monitoring Updates (China Only). This bulletin involves reprogramming the PCM with the latest software available. NOTE: Additional module flashes are required for this update to be effective, the following modules are all to be updated along with this PCM update. ● Battery Pack Control Module (BPCM). ● Transmission Control Module (TCM). ● Integrated Dual Charging Control Module (IDCM). ● Hybrid Control Processor (HCP), Auxiliary Hybrid Control Processor (AHCP) also known as the Power Inverter Module (PIM)."
Owners of these vehicles have filed 149 complaints in the transmission category.
Vehicles covered
- Jeep Wrangler 2021 2021
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