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

VEHICLES
AFFECTED:

TSB: 18-069-23 REV. B
GROUP: 18 - Vehicle Performance

Date:

September 28, 2023

2023 (MP) Jeep Compass
This bulletin applies to vehicles built on or before May 12, 2023 (MDH
0512XX) equipped with a 2.0L I4 DOHC DI Turbo Engine W/ESS (Sales
Code EC1).

REVISION:

18-069-23 REV. A

MARKET APPLICABILITY:

NA

MEA

SA

IAP

EE

CH

CUSTOMER
SYMPTOM:

Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the
technician may find that the following Diagnostic Trouble Code (DTC) has been set:
• P219A - Bank 1 Air-Fuel Ratio Imbalance.

CAUSE:

PCM Software

This bulletin supersedes Technical Service Bulletin (TSB) 18-069-23 REV. A, date of issue May 26, 2023,
which should be removed from your files. All revisions are highlighted with **asterisks** and include
additional repair procedure steps and an additional labor operation.
This Technical Service Bulletin (TSB) has also been released as a Rapid Service Update (RSU) 23-152,
date of issue May 25, 2023. 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. This RSU will expire 18 months after the date of issue.
REPAIR SUMMARY:
This bulletin involves reprogramming the PCM with the latest available software.

18-069-23 REV. B

-2-

CLAIMS DATA:
Labor Operation No:

Labor Description

Skill Category

Labor Time

18-19-06-GC

Module, Powertrain Control
(PCM) - Inspect
(0 - Introduction)

1 - Engine Repair and
Performance

0.2 Hrs.

**18-19-06-GE

Module, Powertrain Control
(PCM) - Inspect and
Reprogram
(0 - Introduction)

1 - Engine Repair and
Performance

0.4 Hrs.**

Failure Code

RF

Required Flash - RSU

CC

Customer Concern

The dealer must choose which failure code to use depending on if this is a Rapid Service Update (RSU) or
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

Ref. No.

Notes

wiTECH or Equivalent

–

–

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.

-3-

18-069-23 REV. B

2. Does the PCM control module have the latest software already installed?
• YES >>> This bulletin has been completed. Use inspect LOP (18-19-06-GC) to close the active
RSU.
• NO >>> Proceed to Step 3.
3. Reprogram the PCM with the latest software. Detailed instructions for flashing control modules
using the wiTECH Diagnostic Application are available by selecting the application’s “HELP” tab.
4. **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.
5. Verify that Electronic Vehicle Information Center (EVIC) steering wheel switches are operational.
6. Do the EVIC steering wheel switches operate properly?
1. YES>>> Proceed to Step 9.
2. NO>>> Proceed to Step 7.
7. If the EVIC control switches on the steering wheel are inoperable, and/or a U1109 DTC is present
in the Body Control Module (BCM) after performing the PCM flash, disconnect the main and
auxiliary battery for two minutes then reconnect the battery. Refer to the detailed service procedures
available in DealerCONNECT/Service Library under: Service Info> 08 - Electrical / 8F - Engine
Systems / Battery System / Standard Procedure.
8. Do the EVIC steering wheel switch controls operate properly?
1. YES>>> Proceed to Step 9.
2. NO>>> If normal operation has not returned, continue with normal diagnostics for any current
DTCs.
9. Did DTC P219A - Bank 1 Air-Fuel Ratio Imbalance return?
• YES >>> Normal diagnosis should be performed. This bulletin has been completed. Use LOP
(18-19-06-GE) to close the active RSU.
• NO >>> No further action required.**
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.