2023 Audi OBD Socket Communication Fault TSB 2070383/2

Audi has issued Technical Service Bulletin (TSB) 97 23 98 2070383/2 to address a specific issue affecting the diagnostic communication capabilities of certain 2023 Audi models. This TSB, which supersedes an earlier bulletin (Group 97 number 23-94 dated May 19, 2023), focuses on instances where a diagnostic tester fails to establish communication with the vehicle via the On-Board Diagnostics (OBD) socket.

The core problem identified by this TSB is related to damaged contacts within the OBD port U31, which can occur during the manufacturing process. This prevents essential diagnostic tools from connecting to the vehicle's systems.

Symptoms

The primary symptom of this issue is the inability of a diagnostic tester to communicate with the vehicle through the OBD socket. This is most commonly observed during the pre-delivery inspection (PDI) process at dealerships. Technicians will find that the diagnostic connection U31 is not functioning as expected, indicating that the contacts may be damaged.

Technical Background

Audi's investigation revealed that the contacts within the diagnostic connection, specifically the OBD socket (U31), might sustain damage during the vehicle's production. This manufacturing-related damage leads to the communication failure. To prevent this issue in future vehicles, Audi implemented an improved production process as of June 21, 2023.

Repair Procedure Summary

For vehicles experiencing this Audi A5 OBD communication fault, the repair process involves several steps:

1. Inspection: During the pre-delivery inspection, if the diagnostic tester cannot communicate with the vehicle, the technician must visually inspect the pins within the OBD port U31 for any signs of damage. The TSB includes figures illustrating typical damaged pins.
2. Documentation: If damaged contacts are found, the technician is required to document the specific pin number(s) affected and attach photographic evidence to the DOC-IT system.
3. Repair: The damaged wires are then repaired using specialized tools. The repair involves removing and installing the storage compartment under the dash panel, checking the central wiring harness, and then repairing the central wiring harness as needed.

Required Parts and Tools

To perform the repair for the Audi A5 OBD communication issue, specific parts and tools are necessary:

• Individual wire: Part number 000979011E (as needed)
• Crimp connectors: Part number 000979940 (as needed)
• Wire harness repair set: Tool number VAS 1978 B

Technicians should always consult their Parts Department and/or ETKA for the most current information on parts and bulletins.

Warranty Information

This repair, identified by Service Number 9709 and Damage Code 0023, is typically covered under Audi's warranty for up to 48 months or 50,000 miles. For Certified Pre-Owned (CPO) vehicles, the claim type G10 applies, requiring verification of owner status. All warranty claims must adhere to the Audi Warranty Policies and Procedures Manual and are subject to review by Audi Warranty. It is important to note that if a vehicle is outside of its warranty period, this Technical Service Bulletin serves as informational guidance only.

Important Warnings

Owners should be aware that if their vehicle is no longer under warranty, the information provided in this Technical Service Bulletin 97 23 98 2070383/2 is for informational purposes only, and repair costs may not be covered by Audi.

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Source: NHTSA ID: 10240223