Technical Service Bulletin (TSB)
Flash: Hybrid Control Processor (HCP) and
Auxiliary Hybrid Control Processor (AHCP) Updates
REFERENCE:

TSB: 08-212-25 REV. A
GROUP: 08 - Electrical

Date:

August 30, 2025

VEHICLES
AFFECTED:

2025 (JL) Jeep Wrangler
This bulletin applies to vehicles built on or before May 19, 2025 (MDH
0519XX) equipped with a 2.0L I4 DOHC DI Turbo PHEV Engine (Sales
Code ECX).

REVISION: 08-212-25

MARKET APPLICABILITY:
NA

MEA

SA

IAP

EE

CH

NOTE: This bulletin applies
to North and South
America, Enlarged
Europe, Middle East
& Africa, India &
Asia Pacific and China
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):
● P0BBD - Hybrid Battery Pack Voltage Variation Exceeded Limit.
● P0B24 - Hybrid Battery 'A' Voltage Unstable.
● P1CEA - Boost Side Evap Purge System Performance
● P04B5 - Fuel Fill Door Stuck Open.
Customers may experience one or more of the following:
● Vehicle Will Not start/shift out of park.
● Service Charging System message.
● Battery degradation.
● Reduced fuel efficiency.
● Rough idling or engine misfires.
● Inconsistent or erratic performance.
● Warning lights on the dashboard (e.g., hybrid system warning light).

CAUSE:

HCP/AHCP module software updates

This bulletin supersedes Technical Service Bulletin (TSB) 08-212-25, date of issue July 11, 2025,
which should be removed from your files. All revisions are highlighted with **asterisks** and include
converting the TSB to an RSU, updated Repair Summary, new LOPs, updated Claims Data Failure
Code and statement, updated Diagnosis statement, additional Repair Procedure steps and a new
Repair Procedure note.
**This Technical Service Bulletin (TSB) has also been released as a Rapid Service Update (RSU)
25-183, date of issue August 30, 2025. 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.**

J08 FSAR-RSU-6246

-2-

REPAIR SUMMARY:
This bulletin involves inspecting the HCP/AHCP, also known as Power Inverter Module (PIM) software level
and possibly reprogramming the HCP/AHCP and the PCM to the latest available software.**
CLAIMS DATA:

Labor Operation No:
**18-19-86-BG

18-19-86-BH

Failure Code

Labor Description
Inspect HCP/ACHP
Module Software Level
(0 - Introduction)
Inspect and Reprogram
HCP/ACHP Module
Software (Includes
Contactor Routine)
(0 - Introduction)
RF
CC

Skill Category
1 - Engine Repair And
Performance

Labor Time
0.2 Hrs.

1 - Engine Repair And
Performance

0.6 Hrs.

Required Flash - RSU**
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.**
RELATED LOPS:

Labor Operation No:
08-00-02-51

Labor Description
High Voltage Power
Down, Power Up, and
Isolation Tes
(1 - Semi Skilled)

Skill Category
6 - Electrical and Body
Systems

Labor Time
0.6 Hrs.

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 symptom listed above in the customer symptom section, perform the Repair Procedure.**

-3-

J08 FSAR-RSU-6246

SPECIAL TOOLS/EQUIPMENT:

Description
wiTECH or Equivalent

Ref. No.
–

Notes
–

REPAIR PROCEDURE:
WARNING!
● 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: The vehicle must not be connected to a high voltage charger when performing software
updates.
NOTE: Install a battery charger to ensure sufficient battery voltage is provided during the flash
process.
NOTE: If this flash process is interrupted/aborted, the flash should be restarted.
NOTE: **The Powertrain Control Module (PCM) must be updated to the latest available software at
the conclusion of this repair procedure. Refer to all applicable published service bulletins for
detailed repair procedures and labor times regarding updating the PCM software.**
1. **Is the vehicle on the RSU VIN list?
● YES >>> Proceed to Step 2.
● NO >>> Proceed to Step 3.
2. Inspect the HCP/AHCP software level.
3. Is the HCP/AHCP updated to the latest software level?

4.
5.

6.

7.

8.

● YES >>> This bulletin is complete. Use Inspect LOP (18-19-86-BG) to close this active RSU.
● NO >>> Proceed to Step 4.**
Disable HV Battery Contactors using wiTECH - Go to the Misc Functions tab --> Select Disable HV Battery
Contactors --> then follow the wiTECH prompts.
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.
Reprogram the AHCP and then the HCP 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.
**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 Voltage
Battery / Standard Procedure.
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.**

9. Verify the PCM is programmed with the latest available software. Refer to all applicable published service
bulletins for detailed repair procedures and labor times regarding updating the PCM software.**
10. Enable HV Battery Contactors using wiTECH - Go to the Misc Functions tab --> Select Enable HV Battery
Contactors For Service--> then follow the wiTECH prompts.
11. 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.