2021-2026 Audi Guided Fault Finding Unexpected Result TSB

Understanding the Reporting Obligation

Audi has released Technical Service Bulletin (TSB) 2081531/1, also known as TPI 2033392, for a wide range of its vehicles from model years 2002 through 2027. This TSB outlines a specific reporting obligation for technicians when their diagnostic tools encounter an unexpected result during the Guided Fault Finding process, particularly when analyzing an event memory.

This is not a typical repair bulletin addressing a specific component failure. Instead, it's a procedural document designed to ensure that Audi's Technical Assistance Center (TAC) is informed about unusual diagnostic outcomes. This helps Audi monitor and address potential issues within their diagnostic software or vehicle systems.

Technical Background: Audi e-tron Guided Fault Finding

The core issue addressed by this TSB is when the "Guided Fault Finding on an event memory led to an unexpected result." Guided Fault Finding is a sophisticated diagnostic process used by Audi technicians to systematically identify and resolve vehicle issues. It uses stored fault codes and sensor data from the vehicle's event memory to guide the technician through a series of tests and checks.

When this process yields an "unexpected result," it means the diagnostic software did not provide the anticipated outcome or solution. This could indicate a novel fault condition, a limitation in the diagnostic software, or an unusual vehicle configuration that requires further investigation by Audi experts. The Audi e-tron Guided Fault Finding process, like other Audi models, relies on accurate diagnostic feedback.

Important Warnings for Technicians

This reporting obligation comes with a critical warning: "This reporting obligation must ONLY be used if the diagnostic tester specifically refers to this reporting obligation and its article number TPI 2033392." Technicians should not initiate this reporting process unless explicitly prompted by the diagnostic software.

If the diagnostic tester does refer to TPI 2033392, technicians are instructed to follow these steps:

• Submit Diagnostic Log: Send the complete diagnostic log online.
• Contact TAC: Reach out to the Technical Assistance Center (TAC) using a web ticket.
• Provide Detailed Information: Describe the customer complaint and all diagnostic checks performed, along with any findings, as accurately and completely as possible. This includes details about the component, any DTCs (Diagnostic Trouble Codes), and the specific test plan function that Guided Fault Finding referred to this TSB.

Audi TAC is expected to respond as soon as possible. If a technician does not receive a reply from Audi TAC within two hours, they are advised to proceed with the necessary repairs themselves.

What Owners Should Know

While this TSB is primarily for technicians, it's important for owners of 2021-2026 Audi vehicles, including the Audi e-tron Guided Fault Finding process, to understand its implications. If your vehicle is undergoing diagnostic work and the technician encounters an unusual or unexpected result during Guided Fault Finding, this TPI might be invoked.

It's also crucial to note that complaints potentially related to vehicle modifications that deviate from the original condition (such as performance tuning) are explicitly stated as "not covered by the reporting obligation." Special warranty codes associated with your vehicle may indicate if such modifications have been made. If your Audi has been modified, this could impact how certain diagnostic issues are handled and whether they fall under standard warranty coverage.

Warranty Information

Audi states that this TSB is informational only and is not applicable to any Audi Warranty. This means the bulletin itself does not provide warranty coverage for repairs, but rather outlines a diagnostic reporting procedure for technicians.

Source: NHTSA ID 11031064