2022-2026 Jeep Compass Fuel Injector Leak TSB

Important Note for U.S. Owners

It is crucial for owners to understand that this Technical Service Bulletin (TSB) 14-003-26, also identified as revision 14-009-25 REV. D, applies specifically to the Brazilian market. This TSB is not applicable to vehicles built for the U.S. market. Therefore, if you are a U.S. owner experiencing a Jeep Compass fuel injector leak or related symptoms, this particular bulletin does not apply to your vehicle.

Symptoms of a Fuel Injector Leak

Owners of affected 2022-2026 Jeep Renegade, Commander, and Compass vehicles equipped with the 1.3L I4 Turbo MAIR DI Engine w/ESS E100 (Sales Code EYJ) may notice several indicators pointing to a potential Jeep Compass fuel injector leak. The most common symptom is the illumination of the "Malfunction Indicator Lamp (MIL)" on the dashboard. In addition to the MIL, drivers might also experience:

• Unstable idle: The engine RPM may fluctuate erratically when the vehicle is stationary.
• Abnormal engine noise: Unusual sounds coming from the engine compartment.

These symptoms are often accompanied by specific Diagnostic Trouble Codes (DTCs) stored in the vehicle's engine control module (ECM).

Fault Codes / DTCs

Technicians diagnosing a Jeep Compass fuel injector leak will look for the following Diagnostic Trouble Codes (DTCs) stored in the ECM:

Code	Description
P1336-00	Multiple Cylinder Misfire
P1337-00	Cylinder 1 Misfire
P1338-00	Cylinder 2 Misfire
P1339-00	Cylinder 3 Misfire
P1340-00	Cylinder 4 Misfire
P0300-00	Multiple Cylinder Misfire
P0301-00	Cylinder 1 Misfire
P0302-00	Cylinder 2 Misfire
P0303-00	Cylinder 3 Misfire
P0304-00	Cylinder 4 Misfire

It's important to note that if DTC P0169 or P0171 are registered, this specific TSB 14-003-26 may not apply. Furthermore, if DTC P0171 and/or P0172 are generated after injector replacement, additional action is required, as learning the injectors with wiTECH is essential to prevent these codes.

Diagnosis and Trigger Conditions

Diagnosis for the Jeep Compass fuel injector leak involves a multi-step process using a scan tool (wiTECH) and an endoscope. Technicians will first verify the presence of the listed DTCs. If these codes are present, the diagnostic procedure continues by:

1. ECM Defect Reading: Perform an ECM defect reading. If DTCs P1336-00, P1337-00, P1338-00, P1339-00, P1340-00, P0300-00, P0301-00, P0302-00, P0303-00, and/or P0304-00 are registered, proceed with the steps. If DTC P0169 or P0171 are registered, this TSB does not apply.
2. Monitoring Fuel Rail Pressure: Using wiTECH II, technicians will access and monitor the injection ramp pressure values in the ECM in graphical mode. The engine is turned off, the ignition is turned on, and pressure values are observed for one minute. Parameters to monitor include: "Engine speed", "Fuel rail pressure", "Desired Fuel Line Pressure", and "Ignition deactivation time". Figures 1 and 2 in the TSB illustrate expected pressure drops (e.g., "Pressão caindo drasticamente após desligar o motor") indicating a leak.
3. Endoscope Inspection: If a pressure loss is detected, an endoscope (special tool EQ-1035143) is inserted into each cylinder to visually check for fuel leakage from the injectors. Figures 3, 4, and 5 provide examples of compliant (no leak) and non-compliant (leaking) injectors. The TSB explicitly states: "Do not start the engine during the leak test of the injectors with the videoscope."

If a leak is confirmed through the endoscope, the repair procedure is initiated. If no leak is found, an injection system cleaning procedure is performed.

Repair Procedures

The resolution for a Jeep Compass fuel injector leak depends on the diagnosis. TSB 14-003-26 outlines two main approaches:

Injection System Cleaning Procedure

If no leak is found during the endoscope inspection but symptoms persist, the fuel injection system is cleaned. This involves:

1. Depressurizing the fuel supply line by removing the F009 fuse from the fuel pump and running the engine until it stops. This procedure is repeated three times.
2. Disconnecting the fuel inlet quick coupling at the high-pressure fuel pump and inserting a plug to seal the pipes.
3. Preparing the "IT200E - GDI Flex Injector Cleaner Applicator" kit (Part Number: 2850000486) and connecting it to the high-pressure fuel pump inlet.
4. Pouring "Isotech 012 GDI Injector Cleaner" additive (Part Number: 2850000479) into the applicator.
5. Pressurizing the applicator kit and starting the engine.
6. Running the vehicle at idle until the cleaning product is consumed and the engine turns off.
7. Disconnecting the equipment, reconnecting the fuel inlet coupling, and reassembling the air filter.
8. Deleting DTCs recorded in the ECM with wiTECH and performing injector learning with wiTECH.

Fuel Injector and High-Pressure Tube Replacement

If a fuel injector leak is verified, the defective fuel injector(s) and the fuel tube (rail/high-pressure pump) are replaced. The specific procedure is found in DealerCONNECT/Service Library under "Service Info> 1056F60 - Tubo Coletor de Combustível Único - Completo de Eletroinjetor Remoção/Recolocação."

• If only one injector is defective, replace one injector and the fuel tube.
• If two injectors are defective, replace only the two defective injectors and the fuel tube.
• If three or all four injectors are defective, replace all four defective injectors and the fuel tube.

After replacement, DTCs must be deleted from the ECM using wiTECH, and injector learning must be performed. The TSB issues a CAUTION! stating: "Learning the injectors with wiTECH is essential after replacing the injectors, at the risk of generating DTC P0171 and/or P0172."

Required Tools and Parts

For diagnosis and repair, the following tools and parts may be required:

• Scan Tool: wiTECH or equivalent
• Endoscope: Código: EQ-1035143
• Injector Cleaner Applicator: "IT200E - GDI Flex Injector Cleaner Applicator" (Part Number: 2850000486)
• Injector Cleaner Additive: "Isotech 012 GDI Injector Cleaner" (Part Number: 2850000479)
• Fuel Injectors: Part Numbers 68771508AA (Mopar) or 46355952 (EMEA)
• High-Pressure Tube (Ramp/High Pressure Pump): Part Numbers 68440665AA (Mopar) or 46341585 (EMEA)

Warranty and Claim Information

This TSB 14-003-26 specifies that repairs are reimbursable within the provisions of the warranty. Labor operations for injector and high-pressure tube replacement include:

• 14-30-20-9S: Replace One Injector (0.7 Hrs)
• 14-30-20-9T: Replace Two Injectors (0.7 Hrs)
• 14-30-20-9U: Replace Three Injectors (0.7 Hrs)
• 14-30-20-9V: Replace Four Injectors (0.7 Hrs)

The skill category for these operations is "1 - Engine Repair and Performance." The TSB explicitly states: "Injection system cleaning cost is not covered in this TSB."

IMPORTANT! When replacing a fuel injector, it is necessary to attach the Vehicle Verification Report (Scan Report) generated by wiTECH (containing the DTCs stored in the ECM) in the SCP system, along with screenshots or PDF printouts demonstrating the failure before replacement. This documentation is crucial for warranty claims (SG) and to prevent the Warranty Request (SG) from being reversed.

Superseded Bulletin Information

This bulletin supersedes Technical Service Bulletin (TSB) 14-009-25 REV. D, dated December 20, 2025. The previous bulletin should be removed from your files. Revisions in this updated bulletin include updated model years, DTCs, Market Note, Repair Summary, Diagnostic section, Repair Procedure, additional Claims Data Note, Special Tool, and Reading Defects and Cleaning Procedure Of The Injection System sections. Revisions not highlighted with asterisks include removal of the build date and DTCs.

NHTSA ID: 11030127