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

TSB: 18-008-25 REV. A
GROUP: 18 - Vehicle Performance

Date:

July 9, 2025

REVISION: 18-008-25

VEHICLES
AFFECTED:

2024 (JL) Jeep Wrangler
MARKET APPLICABILITY:
This bulletin applies to vehicles equipped with the 3.6L V6 VVT Engine
IAP
NA
Upgrade 1 (Sales Code ERC) with 6-Speed Manual Transmission
SA
CH
(Sales Code DEM).
EE

MEA

NOTE: **This bulletin applies
to the North America,
Middle East and Africa
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.**
● P0032 - O2 - Sensor 1/1 Heater Circuit High.
● P0038 - O2 - Sensor 1/2 Heater Circuit High.
● P0052 - O2 - Sensor 2/1 Heater Circuit High.
● P0058 - O2 - Sensor 2/2 Heater Circuit High.
● P1129 - Closed Loop Fueling Not Achieved-Banks 2 Upstream.
● P0152 - O2 Sensor 2/1 Circuit High.
● P0158 - O2 Sensor 2/2 Circuit High.
● P2504 - Charging System Output High.
● P0563 - System Voltage High.
Customers may also comment on one or more of the following:
● Vehicle runs rough.
● "Service Transmission” message on in the Instrument Panel Cluster (IPC).
● During flat tow - Transfer case mis-shift (engine running and clutch pedal up, transmission in gear).
Other software enhancements included:
● Improvements to address vehicle no starts after replacing the PCM.
● O2 heater crack improvements.
● OBD software changes.

CAUSE:

PCM software

This bulletin supersedes Technical Service Bulletin (TSB) 18-008-25, date of issue February 28, 2025,
which should be removed from your files. All revisions are highlighted with **asterisks** and include
a new DTC, new market note, updated Repair Procedure and new LOPs. Revisions not highlighted by
asterisks include removing a build date.
This Technical Service Bulletin (TSB) has also been released as a Rapid Service Update (RSU) 24-109,
date of issue August 01, 2024. All applicable RSU VINs have been loaded. To verify this RSU service
action is applicable to the vehicle, use VIP or perform a VIN search in DealerCONNECT/Service Library.
All repairs are reimbursable within the provisions of warranty.

Z18 FSAR-TSB-5736

-2-

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

Labor Operation No:
**18-19-06-KA

18-19-06-KB

Failure Code

Labor Description
Module, Powertrain
Control (PCM) - Inspect
Software Level
(0 - Introduction)
Module, Powertrain
Control (PCM) - Inspect
and Reprogram
(0 - Introduction)
RF
CC

Skill Category
1 - Engine Repair And
Performance

Labor Time
0.2 Hrs.

1 - Engine Repair And
Performance

0.3 Hrs.**

Required Flash
Customer Concern

The dealer must use failure code CC with this Technical Service Bulletin.
● The “RF” failure code is required for essential module flash/reprogramming and can only be used after
confirmation that the VIN is included on the RSU.
● The failure code “RF” (Required Flash) can no longer be used on Technical Service Bulletin flashes. The
“RF” failure code must be used on an RSU.
● If the customer’s concern matches the SYMPTOM/CONDITION identified in the Technical Service Bulletin,
failure code CC is to be used. When utilizing this failure code, the 3C’s must be supplied.
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 a customer’s VIN is listed in VIP or your RSU VIN list, perform the repair. If any vehicle not on the VIN list
exhibits 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
–

-3-

Z18 FSAR-TSB-5736

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. Is the vehicle on the RSU VIN list?
● YES >>> Proceed to Step 2.
● NO >>> Proceed to Step 3.
2. Does the PCM have the latest software already installed?
● YES >>> This bulletin has been completed, use Inspect LOP (**18-19-06-KA**) to close the active RSU.
● NO >>> Proceed to Step 3.
3. 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.
4. Did any of the following DTCs **P08A6**, P0032, P0052, P0058 or P0038 return?
● YES >>> Proceed to Step 5.
● NO >>> Proceed to Step 6.
5. Refer to all applicable published DTC diagnostics, repair procedures and labor times depending on which
DTCs **P08A6**, P0032, P0052, P0058 or P0038 have returned, available in DealerCONNECT/Service
Library.
6. 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.