2022-2023 Jeep Wrangler Performance Limited Fuel System TSB

Owners of certain 2022-2023 Jeep Wrangler vehicles may encounter a dashboard message indicating "Performance Limited Fuel System" without any accompanying diagnostic trouble codes (DTCs). This issue is specifically addressed by Stellantis Technical Service Bulletin (TSB) 08-106-24 REV. B, issued on May 1, 2024.

The TSB, which supersedes a previous version (08-106-24 REV. A from April 26, 2024) and is also released as Rapid Service Update (RSU) 24-075, identifies the root cause as physical contact between a cooling system hose clamp and the N17 circuit of the High Pressure Fuel Pump Solenoid harness.

Symptoms

If your vehicle is affected, the primary symptom you will observe is the dashboard display showing the message: "Performance Limited Fuel System". Importantly, this warning appears without any associated Diagnostic Trouble Codes (DTCs), which can make diagnosis challenging without specific guidance.

Cause

The underlying cause of the "Performance Limited Fuel System" message is a cooling system hose clamp making contact with the N17 circuit harness for the High Pressure Fuel Pump Solenoid. This contact can lead to damage to the harness, disrupting the fuel system's proper operation and triggering the warning.

Important Warnings

This Technical Service Bulletin (TSB) is also released as a Rapid Service Update (RSU) 24-075. It is crucial to note that "This RSU only applies to vehicles on the RSU VIN list." To determine if your specific vehicle is covered by this service action, you must verify its VIN using the VIP system or a VIN search in DealerCONNECT/Service Library. Repairs are reimbursable under warranty provisions.

Repair Procedure Summary

The repair procedure outlined in TSB 08-106-24 REV. B involves a multi-step inspection and potential repair process:

1. Harness Inspection: A technician will first inspect the N17 circuit harness for any signs of contact with the cooling system hose clamp. This initial inspection corresponds to Labor Operation Number 08-19-AT-93.
2. Clamp Rotation: If contact is found but no damage to the harness, the hose clamp will be rotated to ensure it no longer interferes with the harness. This step is covered by Labor Operation Number 08-19-AT-AA.
3. Damage Assessment: Following the rotation, the harness will be re-inspected for any existing damage.
4. Harness Repair: If damage to the harness is identified, the technician will proceed with repairing the wiring. This repair involves detailed service procedures for circuit testing and wire splicing, and it is associated with Labor Operation Number 08-19-AT-BB.

All repairs performed under this TSB are reimbursable within the provisions of warranty.

Owner Action

If your 2022-2023 Jeep Wrangler displays the "Performance Limited Fuel System" message, even without any DTCs, it is recommended to contact your authorized Stellantis dealer. Provide them with your VIN to check if your vehicle is covered under RSU 24-075 and TSB 08-106-24 REV. B. The inspection and any necessary repairs will be performed under warranty.

NHTSA ID: 11001124