2022-2025 Audi Q5 MIL On with DTC U060B00

Audi has released Technical Service Bulletin (TSB) 2074392/2, superseding previous bulletin 24-29, to address a common issue affecting 2022-2025 Audi Q5 vehicles. This TSB specifically targets instances where the Malfunction Indicator Lamp (MIL) illuminates due to a specific diagnostic trouble code.

The TSB, identified as 01 25 53 2074392/2, was revised on January 30, 2025, with an initial publication date of July 3, 2024. It provides a detailed solution for the problem, including an optimized production process for vehicles manufactured from January 16, 2025, onwards.

Symptoms

Owners of affected Audi Q5 models may notice the Malfunction Indicator Lamp (MIL) illuminated on their dashboard. This light indicates a fault within the vehicle's emissions system or engine management.

Fault Codes / DTCs

When diagnosing the issue, technicians will find the following Diagnostic Trouble Code (DTC) stored in the engine control unit J623 (diagnostic address 0001):

• U060B00: Lost Communication With Turbocharger/Supercharger Boost sensor “A”

This DTC indicates that the engine control unit is not receiving expected signals from the turbocharger/supercharger boost sensor.

Diagnosis / Trigger Conditions

The root cause of the Audi Q5 MIL U060B00 is identified as vibrations. Under certain conditions, these vibrations can cause the wiring on the electrical connector T3y, which connects to the charge pressure sender -G31-, to break. This wiring damage may not be immediately obvious and might only become apparent after the connector is de-pinned or the harness tape is removed during inspection.

Repair Procedure Summary

To resolve the Audi Q5 MIL U060B00 issue, a specific wiring repair procedure is outlined in TSB 2074392/2. The process begins by disconnecting electrical connector T91 from the engine control unit and loosening the wiring harness at its two mounting points to improve access.

Technicians will then cut the three wires of the charge pressure sender -G31- approximately 25 mm from where they emerge from the main harness bundle. New repair wires, part number 000 979 056 EC, are then pinned into a new connector housing, 4K0 9737 03A, and cut to a length of 250 mm. A protective cap, 4G0 971 921, is fitted onto this new connector.

The repair wiring harness is connected to the main wiring harness using three butt connectors, part number 000 979 940. The new wire harness must measure 170 mm from the connector housing to its branch-off point in the main harness, emerging 10 mm below the cable tie. Any excess length is tucked under the main bundle wrapping. Finally, the repair wires are wrapped with cloth adhesive tape, N 106 497 02, starting from the connector and overlapping towards the main harness. After reassembly, all DTCs must be cleared.

Required Tools or Parts

This repair requires several specific parts and materials:

• Fasteners, Bolts, Nuts, and Screws: As needed per ETKA/ELSA
• 4K0973703A: Flat contact housing (Quantity: 1)
• 4G0971921: Protective cap (Quantity: 1)
• 000979056EC: Individual wire (Quantity: 2)
• 000979940: Butt connector (Quantity: 3)
• N10649702: Cloth adhesive tape (Quantity: As required)

Important Warnings

Audi specifies that if your vehicle is no longer under warranty, this Technical Service Bulletin (TSB) is provided for informational purposes only. Warranty claims related to this TSB must adhere to the Audi Warranty Policies and Procedures Manual and are subject to review or audit by Audi Warranty.

Owner Action

If your 2022-2025 Audi Q5 exhibits an illuminated MIL and you suspect the Audi Q5 MIL U060B00 issue, it is recommended to visit an authorized Audi service center. They can diagnose the vehicle, confirm the presence of DTC U060B00, and perform the necessary wiring repair as outlined in TSB 2074392/2.

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Source: NHTSA ID 11013751