Technical Service Bulletin (TSB)
Flash: Powertrain Control Module (PCM) Updates
REFERENCE:

TSB: 18-108-25
GROUP: 18 - Vehicle Performance

Date:

December 13, 2025

VEHICLES
AFFECTED:

2022 (JL) Jeep Wrangler
This bulletin applies to vehicles equipped with a 2.0L I4 DOHC DI
Turbo PHEV Engine (Sales Code ECX).

REVISION: –

MARKET APPLICABILITY:
NA

MEA

SA

IAP

EE

CH

NOTE: This bulletin applies to
the North and South
America, Enlarged
Europe, India & Asia
Pacific, Middle East
& Africa and China
markets.
CUSTOMER
SYMPTOM:

Customers must experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation
the technician must find one or more of the following Diagnostic Trouble Codes (DTC)s have been set:
● P2450 - Fuel Tank Isolation Valve Stuck Open.
● P1D83 - Implausible Engine Oil Temperature Signal Received.
Customers may comment on one or more of the following:
● Fuel Door will not open due to intermittent Fuel Tank Isolation Valve (FTIV) Stuck Open.
● Reduced fuel efficiency.
In addition, the following software enhancement is available:
● Hood Switch changes.

CAUSE:

PCM software

REPAIR SUMMARY:
This bulletin involves reprogramming the PCM, HCP and AHCP, also known as the Power Inverter Module
(PIM) with the latest available software.

B18 FSAR-TSB-6719

-2-

CLAIMS DATA:

Labor Operation No:
**18-19-17-58

Failure Code

Labor Description
Reprogram Powertrain
Control (PCM), and
Hybrid Control Processor/
Auxiliary Hybrid Control
Processor (HCP/AHCP)
- Reprogram. With
Contactor Routine
(0 - Introduction)
CC

Skill Category
1 - Engine Repair and
Performance

Labor Time
0.7 Hrs.**

Customer Concern

The dealer must use failure code CC with this Technical Service Bulletin.
● If the customer’s concern matches the SYMPTOM identified in the Technical Service Bulletin, failure code
CC is to be used.
● When utilizing this failure code, the 3C’s (customer’s concern, cause and correction) must be provided for
processing Technical Service Bulletin flash/reprogramming conditions.
DIAGNOSIS:
Using a Scan Tool (wiTECH) with the appropriate Diagnostic Procedures available in DealerCONNECT/
Service Library, verify all related systems are functioning as designed. If Diagnostic Trouble Codes (DTCs) or
symptom conditions, other than the ones listed above are present, record the issues on the repair order and
repair as necessary before proceeding further with this bulletin.
If the customer describes the symptom/condition listed above, perform the repair procedure.
SPECIAL TOOLS/EQUIPMENT:

Description
wiTECH or Equivalent

Ref. No.
–

Notes
–

REPAIR PROCEDURE:
NOTE: Install a battery charger to maintain a 12 volt system voltage.
CAUTION!
● Before performing the software reprogramming, it is necessary to make the vehicle safe.
● When performing repairs that directly involve or imply possible contact with live high voltage
components/systems, the technician must ensure that the power supply of the high-voltage system
is disconnected throughout the operation.
● Only specifically trained technicians qualified to perform repairs on vehicles with high voltage
systems under current national laws/regulations are authorized to work on the vehicle.
● Before performing any diagnostic repair work on the vehicle, carefully read and comply with
the general instructions for working safely on hybrid/electric vehicles and use suitable general
equipment and Personal Protective Equipment (PPE).
NOTE: If this flash process is interrupted/aborted, the flash should be restarted.

-3-

B18 FSAR-TSB-6719

NOTE: The vehicle must not be connected to a high voltage charger when performing software
updates.
1. Disable HV battery contactors with wiTECH - Go to the Misc Functions tab --> Select Disable HV Battery
Contactors --> then follow the wiTECH prompts.
2. Use wiTECH to confirm that the contactors are open and waiting five minutes. If the contactors do not
open turn the ignition on then off. Once successful a note will appear on the wiTECH screen indicating the
contactors are open.
3. Reprogram the PCM with the latest software. If issues arise when flashing a module using the wiTECH
Diagnostic Application, please submit a ticket to the Helpdesk. The helpdesk can be found within the Help
menu.
4. Reprogram the HCP and AHCP with the latest available software. If issues arise when flashing a module
using the wiTECH Diagnostic Application, please submit a ticket to the Helpdesk. The helpdesk can be
found within the Help menu.
5. Power down the HV battery system. Refer to the detailed service procedures available in
DealerCONNECT/Service Library under: Service Info> 12 - Electrified Powertrain System / High
VoltageBattery / Standard Procedure.
6. Power up the HV battery system. Refer to the detailed service procedures available in DealerCONNECT/
Service Library under: Service Info> 12 - Electrified Powertrain System / High Voltage Battery / Standard
Procedure.
7. Enable HV battery contactors with wiTECH - Go to the Misc Functions tab --> Select Enable HV Battery
Contactors For Service--> then follow the wiTECH prompts.
8. Clear any DTCs that may have been set in any modules due to reprogramming. The wiTECH application
will automatically present all DTCs after the flash and allow them to be cleared.
NOTE: For SA market only, after applying this TSB, it is not necessary to send DID-I or DID-A.
POLICY:
Reimbursable within the provisions of the warranty.
This bulletin is supplied as technical information only and is not an authorization for repair. No part of this publication may be reproduced, stored in a retrieval system, or
transmitted, in any form or by any means, electronic, mechanical, photocopying, or otherwise, without written permission of FCA US LLC.