2024-2025 Jeep Compass ECT Sensor Malfunction TSB

Important Warnings for Owners

This Technical Service Bulletin (TSB) 08-115-26 and its associated Rapid Service Update (RSU) 26-049 apply specifically to vehicles sold in India and Asia Pacific markets. This bulletin is not applicable to vehicles built for the US market. Owners in other regions should confirm market applicability with their local dealership.

Symptoms of an ECT Sensor Malfunction

Owners of affected 2024-2025 Jeep Compass vehicles, equipped with the 2.0L I4 Turbo Diesel Engine with ESS (Sales Code EBS), may observe the following issues:

• A "Malfunction Indicator Lamp (MIL) illumination" on the dashboard.
• An "Engine overheating warning lamp indicator is illuminated on the Instrument Panel Cluster (IPC)".

These symptoms are typically accompanied by a specific diagnostic trouble code (DTC) stored in the vehicle's computer system.

Fault Codes / DTCs

When a Jeep Compass ECT sensor issue is present, technicians may find the following diagnostic trouble code:

Code	Description
P0115-00	Engine Coolant Temperature Plausibility Check

Diagnosis and Trigger Conditions

The root cause for these symptoms and the P0115-00 DTC is often an Engine Coolant Temperature (ECT) sensor that was not properly soldered during manufacturing. This can lead to inaccurate temperature readings, triggering the warning lights and fault code.

To diagnose the issue, a technician will use a scan tool, such as wiTECH, to verify all related systems are functioning correctly. They will also check for any other DTCs or symptom conditions. If the vehicle's VIN is listed under the RSU 26-049 campaign, or if the symptoms match, the repair procedure will be initiated.

Repair Procedure Summary

The repair for the 2024-2025 Jeep Compass ECT sensor malfunction involves inspecting and potentially replacing the ECT sensor. The procedure begins with accessing the sensor, which requires removing the battery tray and the Diesel Particulate Filter (DPF) pressure sensor bolt. The DPF pressure sensor is then positioned aside to allow access to the ECT sensor.

Next, the ECT sensor wire harness connector is disconnected, and the ECT sensor itself is removed. Technicians will then inspect the batch code located on the brass nut of the ECT sensor. If the batch code matches specific numbers (25W10, 25W36, or 25W37), the sensor is deemed faulty and must be replaced. If the batch code does not match these numbers, the inspection is complete, and the original sensor is retained.

For sensors requiring replacement, a new ECT sensor is installed and tightened to 22 N·m (16 ft. lbs.). The DPF pressure sensor is then reinstalled and tightened to 9 N·m (80 in. lbs.). Finally, the battery tray is reinstalled, the cooling system is topped off if necessary, and all diagnostic trouble codes are cleared from the vehicle's system.

Required Tools or Parts

Technicians performing this service will utilize a wiTECH scan tool or equivalent diagnostic equipment. Specific parts that may be required include:

• Sensor, Temperature: MOPAR - 68122824AA (or EMEA - 55203964)
• Mopar Antifreeze/Coolant (10 Year 150,000 Mile Formula OAT): MOPAR - 68163848GB (or EMEA - 59114709)

Owner Action

If your 2024-2025 Jeep Compass is experiencing a Malfunction Indicator Lamp (MIL) illumination or displaying the P0115-00 DTC, and you are in an India or Asia Pacific market, it is recommended to contact your authorized Jeep dealership. This repair is reimbursable within the provisions of warranty. The dealership can verify if your vehicle is covered under TSB 08-115-26 or RSU 26-049 and perform the necessary inspection and replacement of the Jeep Compass ECT sensor.

Source: NHTSA ID 11030233