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

TSB: 08-212-25
GROUP: 08 - Electrical

Date:

July 11, 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: –

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

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

B08 FSAR-TSB-5608

-2-

CLAIMS DATA:

Labor Operation No:
18-19-86-BH

Failure Code

Labor Description
Processor, Hybrid
Control (HCP/AHCP)
- Reprogram
(Includes Contactor
Disable/Enable)
(0 - Introduction)
CC

Skill Category
6 - Electrical and Body
Systems

Labor Time
0.6 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.
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 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
–

-3-

B08 FSAR-TSB-5608

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.
1. Disable HV Battery Contactors using 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 HCP and AHCP 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. Enable HV Battery Contactors using wiTECH - Go to the Misc Functions tab --> Select Enable HV Battery
Contactors For Service--> then follow the wiTECH prompts.
5. 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.