2025 Jeep Wrangler MIL Illumination & Multiple DTCs TSB

Owners of the 2025 Jeep Wrangler may experience a range of issues, including the illumination of the Malfunction Indicator Lamp (MIL) and various Diagnostic Trouble Codes (DTCs). This comprehensive problem set is detailed in Technical Service Bulletin (TSB) 23-019-25, also known as Rapid Service Update (RSU) 25-069. The bulletin applies to 2025 Jeep Wrangler vehicles built on or after July 01, 2024 (MDH 0701XX) and on or before February 28, 2025 (MDH 0228XX).

The TSB indicates that these problems stem from a manufacturing issue. The repair involves multiple inspections and targeted repairs based on the specific symptoms and DTCs present in the vehicle. If you are experiencing a 2025 Jeep Wrangler MIL illumination or any of the related symptoms, it is important to have your vehicle inspected.

Symptoms

Customers will typically notice a Malfunction Indicator Lamp (MIL) illumination on their dashboard. This warning light is often accompanied by one or more specific Diagnostic Trouble Codes (DTCs). Beyond the MIL, owners might also experience several other noticeable issues.

MIL Illumination and DTCs

When the 2025 Jeep Wrangler MIL illumination occurs, it is frequently linked to one or more of the following DTCs:

Other Customer Symptoms

In addition to the MIL and DTCs, owners may also observe one or more of these physical symptoms:

• "Seatbelt warning light and warning sound do not go off even when the passenger seat belt is fastened"
• "Coolant leak from under the long life coolant reserve tank"
• "Fuel cap strap broken"
• "Door not opening / hard to open for both right side doors"
• "Lumber switch inoperative"
• "Right front seat cover stitch is tore out"
• "Header seal deformation"

Fault Codes / DTCs

The following Diagnostic Trouble Codes (DTCs) are specifically mentioned in TSB 23-019-25 as indicators for this issue:

Code	Description
P0133	O2 Sensor 1/1 Slow Response
P2251	O2 Sensor 1/1 Negative Current Control Circuit/Open
P0131	O2 Sensor 1/1 Circuit Low
P2626	O2 Sensor 1/1 Pump Cell Current Trim Circuit/Open
P0607	ECU Internal Performance
C140A	Transfer Case Motor Control
P02EE	Cylinder 1 injector Circuit Performance
P02EF	Cylinder 2 injector Circuit Performance
P02F0	Cylinder 3 Injector Circuit Performance
P02F1	Cylinder 4 injector Circuit Performance
U0109	Lost Communication With Fuel Pump Control Module
P0330	Knock Sensor 2 Circuit
P023B	Charge Air Cooler Coolant Pump "A" Control Circuit Low
P2110	Electronic Throttle Control - Forced Limited RPM

Diagnosis

To accurately diagnose the issues leading to the 2025 Jeep Wrangler MIL illumination, technicians must use a scan tool, specifically wiTECH or an equivalent. This tool allows them to access the appropriate Diagnostic Procedures within the DealerCONNECT/Service Library. The process involves verifying that all related systems are functioning as designed. If any DTCs or symptoms beyond those listed in this bulletin are present, they should be recorded and addressed before proceeding with the TSB repairs.

Repair Procedure Summary

The repair procedure outlined in TSB 23-019-25 is a multi-step diagnostic and repair process. It involves systematically checking for specific symptoms and DTCs, then performing the corresponding repair. This ensures that all identified manufacturing issues are corrected.

Key repair actions include:

• Seatbelt System: If the seatbelt warning light and sound persist, the rear seat belt buckle may need replacement.
• Door Latches: For issues with right front or right rear doors not opening, the respective door latches will be replaced.
• Knock Sensor: If DTC P0330 (Knock Sensor 2 Circuit) is present, the knock sensor will be replaced.
• Lumbar Switch: If the power seat lumbar switch is inoperative, it will be replaced.
• Seat Cover: A torn front left seat back cover will be replaced.
• Header Weatherstrip: A deformed header weatherstrip will be replaced.
• Fuel Cap Tether: A broken fuel cap tether strap and assembly will be replaced.
• Coolant System: If a coolant leak is detected from the coolant bottle, the bottle itself will be replaced.
• Oxygen Sensor: For O2 sensor-related DTCs (P0133, P2251, P0131, P2626), the upstream oxygen sensor will be replaced.
• Coolant Pump: If DTC P023B (Charge Air Cooler Coolant Pump "A" Control Circuit Low) is present, the low temperature auxiliary coolant pump will be replaced.
• Powertrain Control Module (PCM): For various injector circuit performance DTCs (P02EE, P02EF, P02F0, P02F1), U0109, P0607, or C140A, the PCM may need replacement.
• Throttle Body: If DTC P2110 (Electronic Throttle Control - Forced Limited RPM) is set, the throttle body will be replaced.

After all necessary repairs are completed, the technician will clear any remaining DTCs.

Required Tools and Parts

Technicians will require a wiTECH scan tool or an equivalent diagnostic system. Various parts may be needed depending on the specific symptoms and DTCs found. These include, but are not limited to:

• 7KA56TX7AA - Buckle, Rear Seat, Two Buckles
• 68364312AC - Bottle, Coolant Recovery
• 68357474AC - Cap Kit, Fuel Tank Locking
• 68456844AA - Latch, Front Door
• 68617422AB - Sensor, Oxygen, Upstream
• 68290300AA - Pump, Auxiliary Coolant
• 68654606AA - Control Module, Generic Engine, GPEC V
• 68428448AB - Throttle Body, ETC
• 68577697AA - Switch, Lumbar Control
• 7TA07TX7AB - Cover, Left Front Seat Back
• 68577697AA - Knock Sensor
• 68271695AI - Weatherstrip, Windshield Header
• 68163848GB - Antifreeze, Coolant, Gallon

Warranty Information

All repairs performed under TSB 23-019-25 are reimbursable within the provisions of the vehicle's warranty. This means owners should not incur out-of-pocket expenses for these specific repairs.

Owner Action

If you own a 2025 Jeep Wrangler and are experiencing a Malfunction Indicator Lamp (MIL) illumination, any of the listed DTCs, or other related symptoms, it is recommended to contact your authorized Jeep dealership. They can verify if your vehicle is covered by TSB 23-019-25 (RSU 25-069) and perform the necessary diagnostic and repair procedures.

NHTSA ID: 11017361