2023 Jeep Compass PCM Update for P0607 and Start Issues

Owners of the 2023 Jeep Compass may experience specific engine performance issues, including diagnostic trouble code (DTC) P0607. This TSB, identified as TSB 18-061-25, outlines a software update for the Powertrain Control Module (PCM) to address these concerns. While the TSB itself indicates applicability to multiple markets, including North America, the NHTSA summary states that this bulletin is primarily for the South American market and not applicable to vehicles built for the US market. However, owners experiencing these symptoms or codes may still find this information relevant.

This bulletin applies to 2023 Jeep Compass vehicles equipped with the 1.3L I4 Turbo MAIR DI ENG W/ESS E100 (Sales Code EYJ) engine, built between January 02, 2023, and December 31, 2023.

Symptoms

If your 2023 Jeep Compass is affected by this issue, you might notice one or more of the following symptoms:

• The vehicle will not start until the ignition is cycled a second time.
• The "Injection light is illuminated in the Instrument Panel Cluster (IPC)".

Technicians may also find the specific diagnostic trouble code P0607 stored in the vehicle's system, indicating a control module performance issue.

Fault Codes / DTCs

The primary diagnostic trouble code associated with this issue is:

Code	Description
P0607	Control Module Performance

Cause

The root cause of these symptoms and the 2023 Jeep Compass PCM P0607 fault code is identified as an issue within the Powertrain Control Module (PCM) software.

Repair Procedure Summary

The resolution for these issues involves reprogramming the PCM with the latest available software. A certified technician will perform the following steps:

1. Prepare the Vehicle: A battery charger must be connected to ensure the battery voltage remains between 13.2 and 13.5 volts throughout the reprogramming process. This prevents voltage drops that could interrupt the flash.
2. Reprogram the PCM: The Powertrain Control Module will be updated using the wiTECH Diagnostic Application to install the newest software. If the flash process is interrupted, it must be restarted.
3. Clear DTCs: After successful reprogramming, any diagnostic trouble codes that may have been set in various modules will be cleared. The wiTECH application is designed to automatically present and clear these DTCs.

Required Tools or Parts

To perform this repair, technicians will utilize the wiTECH diagnostic tool or an equivalent system capable of flashing the PCM.

Important Warnings

Owners should be aware of specific instructions for technicians regarding post-repair procedures:

• After applying this TSB, it is not necessary to send DID-I or DID-A.

Owner Action

If you own a 2023 Jeep Compass and are experiencing the symptoms described, such as the engine not starting on the first attempt or the injection light illuminating, you should contact your authorized Jeep dealership. Explain the symptoms you are experiencing and mention Technical Service Bulletin TSB 18-061-25. The repair, which involves reprogramming the PCM, is reimbursable under the provisions of the vehicle's warranty.

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Source: NHTSA ID: 11021018, TSB 18-061-25