2023 Jeep Compass PCM Update for P2002 DTC

Owners of the 2023 Jeep Compass may experience various performance issues, including a lit Malfunction Indicator Lamp (MIL) and specific diagnostic trouble codes. Stellantis has released Technical Service Bulletin (TSB) 18-076-24 to address these concerns by updating the Powertrain Control Module (PCM) software.

This bulletin specifically applies to 2023 Jeep Compass vehicles (M6, India market) equipped with a 2.0L I4 Turbo Diesel Engine with Engine Stop/Start (ESS), identified by Sales Code EBS, and built on or after February 1, 2023 (MDH 0201XX).

Symptoms

Owners of affected 2023 Jeep Compass vehicles may notice one or more of the following symptoms:

• Illumination of the Malfunction Indicator Lamp (MIL).
• An oil change service light appearing at 15,000 km (9,321 miles), though the actual maintenance interval for the Australian market is 20,000 km (12,427 miles).
• The message "DEF Low Refill Soon" displayed in the Instrument Panel Cluster (IPC).
• Reduced engine power output when applying the throttle.
• The vehicle entering "limp-in mode."

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

If your Jeep Compass P2002 DTC is present, along with any of the above symptoms, a PCM software update is likely needed.

Diagnosis / Trigger Conditions

The root cause of these symptoms and the Jeep Compass P2002 DTC is identified as an issue with the PCM software. Technicians will use a Scan Tool (wiTECH) and diagnostic procedures from DealerCONNECT/Service Library to verify system functionality. If other DTCs or symptoms are present beyond those listed, they should be addressed before proceeding with this bulletin. The applicability of this service action can also be verified by checking the vehicle's VIN in VIP or the Rapid Service Update (RSU) VIN list.

Repair Procedure Summary

This service bulletin involves inspecting the PCM and, if necessary, reprogramming it with the latest available software. The process includes:

1. Vehicle Identification: Determine if the vehicle's VIN is on the RSU list.
2. Software Check: Verify if the PCM already has the latest software installed.
3. PCM Reprogramming: If the software is not current, the PCM will be reprogrammed using the wiTECH Diagnostic Application. It is crucial to maintain battery voltage between 13.2 and 13.5 volts during this process by using a battery charger. If the flash process is interrupted, it must be restarted.
4. DTC Clearing: After reprogramming, all Diagnostic Trouble Codes that may have been set in any module will be cleared using the wiTECH application.

Required Tools or Parts

Technicians will require a wiTECH diagnostic tool or an equivalent system to perform the software update.

Important Warnings

• Battery Voltage: During the PCM flash process, a battery charger must be installed to ensure the battery voltage does not drop below 13.2 volts or climb above 13.5 volts. An unstable voltage can interrupt or corrupt the programming.
• Interrupted Flash: If the flash process is interrupted or aborted for any reason, it must be restarted from the beginning.

What Owners Should Know

This Technical Service Bulletin (TSB) 18-076-24 supersedes TSB 18-027-24, issued on March 28, 2024. It has also been released as Rapid Service Update (RSU) 24-064. All repairs performed under this bulletin are reimbursable within the provisions of your vehicle's warranty. Owners will not be individually notified by Stellantis for this TSB, so it's important to be aware of the symptoms and proactively discuss them with your dealership if you experience a Jeep Compass P2002 DTC or related issues.

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Source: NHTSA ID: 11008754