2023-2026 Jeep Compass PCM Updates for DPF Issues

This Technical Service Bulletin (TSB) 18-018-26, also released as Rapid Service Update (RSU) 26-031, addresses various engine performance and warning light issues in specific 2023-2026 Jeep Compass vehicles. The primary focus of this bulletin is on updating the Powertrain Control Module (PCM) software to resolve these concerns. This TSB supersedes previous bulletins 18-078-24, 18-053-24, and 18-076-24, and RSUs 24-144, 24-093, and 24-064.

Important Warnings for Owners

It is crucial to note that this bulletin applies exclusively to the India & Asia Pacific market. This means vehicles sold in other regions, including the US market, are not covered by this specific service action. Owners should be aware of this market restriction.

If your vehicle requires a Diesel Particulate Filter (DPF) replacement, your service center must obtain prior approval from the warranty team before proceeding with the repair. This ensures proper coverage and authorization for the work.

Symptoms

Owners of affected 2023-2026 Jeep Compass vehicles may experience a Malfunction Indicator Lamp (MIL) illumination. This is often accompanied by the Diagnostic Trouble Code (DTC) P2002 - Diesel Particulate Filter Flow Resistance Monitoring Too High Level 2 Component Or System Operation Obstructed Or Blocked.

Beyond the MIL and DTC P2002, customers might also report several other symptoms:

• The "Oil change service light comes on at 15,000km (9,321 Miles)", which is earlier than the actual maintenance interval of 20,000km (12,427 Miles) for the Australian market.
• A "DEF Low Refill Soon" message appearing in the Instrument Panel Cluster (IPC).
• Lower than expected engine power output when accelerating.
• The engine not starting.
• The battery not charging.
• An "Engine Oil Temperature High" message displayed in the Instrument Panel Cluster (IPC).
• A "Stop/Start Not Ready / Driver Seatbelt Unbuckled" message in the IPC.
• The vehicle entering a limp-in mode, restricting its speed to not go beyond 100 km/h (62 mph).

These symptoms collectively point to issues that can be addressed by the Jeep Compass PCM updates P2002 outlined in this bulletin.

Fault Codes / DTCs

The primary Diagnostic Trouble Code (DTC) associated with this issue is:

Code	Description
P2002	Diesel Particulate Filter Flow Resistance Monitoring Too High Level 2 Component Or System Operation Obstructed Or Blocked

Diagnosis and Trigger Conditions

To diagnose the issue, technicians will use a scan tool, such as wiTECH, to verify that all related systems are functioning correctly. They will check for the presence of DTC P2002 or any of the described customer symptoms. If other DTCs or symptoms are present, these must be recorded and addressed before proceeding with the TSB's repair steps.

If a vehicle's VIN is listed in the Rapid Service Update (RSU) VIN list, the repair should be performed. If a vehicle not on the VIN list exhibits any of the symptoms detailed above, the repair procedure should also be followed.

Repair Procedure Summary

The repair process for the Jeep Compass PCM updates P2002 involves inspecting and potentially reprogramming the Powertrain Control Module (PCM). In some cases, a Diesel Particulate Filter (DPF) replacement may also be necessary.

1. Initial Software Check: The technician first checks if the PCM already has the latest software. If it does, and the issue is resolved, the RSU can be closed using Labor Operation Number (LOP) 18-19-06-AR.
2. PCM Reprogramming: If the PCM software is not up-to-date, the technician will reprogram the PCM with the latest available software using the wiTECH Diagnostic Application. It is critical to install a battery charger to maintain battery voltage between 13.2 and 13.5 volts during this flash process. If the flash is interrupted, it must be restarted.
3. Clear DTCs: After reprogramming, all Diagnostic Trouble Codes (DTCs) that may have been set in any module due to the reprogramming will be cleared using the wiTECH application.
4. Post-Reprogramming Scan: A rescan for DTCs is performed. If DTC P2002 reappears or if symptoms of a DPF crack persist, the technician proceeds to the next step.
5. DPF Replacement: If necessary, the Diesel Particulate Filter (DPF) is replaced. This step requires prior approval from the warranty team. Detailed service procedures for DPF removal and installation are available in DealerCONNECT/Service Library under 'Service Info > 11 - Exhaust System / Filter, Diesel Particulate'.

Required Tools or Parts

Technicians will require a wiTECH or equivalent diagnostic tool for reprogramming the PCM and clearing DTCs. For DPF replacement, the following parts may be needed:

• 68566622AA: Pipe and Converter, Exhaust
• 68081364AA: Gasket
• 68282995AA: Gasket
• 68166248AA: Gasket
• 68338473AA: Gasket
• 59117409: Coolant (Local Market Supplied Consumable)

Labor operations associated with this TSB include 18-19-06-AR (Inspect PCM), 18-19-06-AS (Inspect and Reprogram PCM), and 18-19-06-AT (Replace DPF).

Owner Action

If you own a 2023-2026 Jeep Compass in the India or Asia Pacific market and are experiencing any of the described symptoms, especially a Malfunction Indicator Lamp (MIL) with DTC P2002, you should contact your authorized Jeep service center. They will be able to diagnose the issue and perform the necessary Jeep Compass PCM updates P2002 or DPF replacement under warranty provisions.

NHTSA ID: 11028880