Flash: Powertrain Control Module (Pcm) Updates DTC P1CEA, P2AF6, P026E Set (18-022-25)

Publication date: 2025-04-29
Reference number: 18-022-25

FLASH: POWERTRAIN CONTROL MODULE (PCM) UPDATES DTC P1CEA, P2AF6, P026E SET

TECHNICAL SERVICE BULLETIN

Reference Number(s): 18-022-25, Date of Issue: April 29, 2025

CHRYSLER:	2025 (WS) Wagoneer/Grand Wagoneer
GROUP:	18 - Vehicle Performance

VEHICLES AFFECTED

2025 (WS) Wagoneer/Grand Wagoneer

This bulletin applies to vehicles built on or before May 16, 2025 (MDH 0516XX) equipped with the 3.0L I6 Hurricane HO Twin Turbo w/ESS (Sales Code EFC).

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):

P1CEA - Boost Side EVAP Purge System Performance.
P2AF6 - Dual Starter Relay Stuck.
P026E - Charge Air Cooler Coolant Pump Performance.

Customers may also comment on one or more of the following:

Low battery State of Charge (SoC) leading to battery replacement.
Vehicle does not restart after an Engine Stop Start (ESS) event but will restart after an ignition cycle.

CAUSE

PCM software

NOTE: This Technical Service Bulletin (TSB) has also been released as a Rapid Service Update (RSU) 25-084, date of issue April 29, 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.

REPAIR SUMMARY

This bulletin involves reprogramming the PCM with the latest available software.

CLAIMS DATA

CLAIMS INFORMATION

Labor Operation No:	Labor Description	Skill Category	Labor Time
18-19-06-JS	Module, Powertrain Control (PCM) - Inspect	1 - Engine Repair And Performance	0.2 Hrs.
18-19-06-JT	Module, Powertrain Control (PCM) - Inspect and Reprogram (0 - Introduction)	1 - Engine Repair And Performance	0.3 Hrs.
Failure Code	RF	Required Flash
Failure Code	CC	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

SPECIAL TOOLS INFORMATION

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.

Is the vehicle on the RSU VIN list?
- YES>>> Proceed to Step 2 .
- NO>>> Proceed to Step 3 .
Does the PCM have the latest software level already installed?
- YES>>> This bulletin has been completed, use Inspect LOP (18-19-06-JS) to close the active RSU.
- NO>>> Proceed to Step 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.
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.