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

TSB: 18-008-26
GROUP: 18 - Vehicle Performance

Date:

January 29, 2026

VEHICLES
AFFECTED:

2022 (JL) Jeep Wrangler
This bulletin applies to vehicles equipped with a 3.6L V6 VVT Engine
Upgrade 1 (Sales Code ERC).

REVISION: ––

MARKET APPLICABILITY:
NA

MEA

SA

IAP

EE

CH

NOTE: This bulletin applies to
North America markets.
CUSTOMER
SYMPTOM:

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):
● P08A6 – Gear Lever Position Sensor System – Multiple Sensor Correlation. (Manual Transmission Only)
● P152F – Engine Hood Switch 2 / Engine Hood Switch 1 Correlation.
Customers may also comment on one or more of the following:
● "Service Transmission” message on in the Instrument Panel Cluster (IPC) due to clutch slip detection.
(Manual Transmission Only)
NOTE: Customers might experience wheel spin or slippage and the PCM could interpreted the
wheel spin or slippage as slipping the clutch too much and to avoid clutch damage, the
customer may see the message in the IPC.
● Vehicle is in limp home mode.
Other software enhancements included:
● Engine oil pump in high pressure mode with cold engine oil to improve valvetrain component reliability.

CAUSE:

PCM software

REPAIR SUMMARY:
This bulletin involves reprogramming the PCM with the latest available software.
CLAIMS DATA:

Labor Operation No:
18-19-06-8A

Failure Code

Labor Description
Module, Powertrain
Control (PCM) Reprogram
(0 - Introduction)
CC

Skill Category
1 - Engine Repair And
Performance

Customer Concern

Labor Time
0.3 Hrs.

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 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 any of the symptoms listed above in the customer symptom section, perform the
Repair Procedure.
SPECIAL TOOLS/EQUIPMENT:

Description
wiTECH or Equivalent

Ref. No.
–

Notes
–

REPAIR PROCEDURE:
NOTE: Install a battery charger to ensure battery voltage does not drop below 13.2 volts. Do not allow
the charging voltage to climb above 13.5 volts during the flash process.
NOTE: If this flash process is interrupted/aborted, the flash should be restarted.
1. Reprogram the PCM 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.
2. Clear all DTCs that may have been set in any module due to reprogramming. The wiTECH application will
automatically present all DTCs after the flash and allow them to be cleared.
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.