2022-2024 Audi Q5 EVAP System Leak DTC P044200 TSB

Symptoms

Owners of 2022-2024 Audi Q5, Q5 e quattro, and Q5 Sportback vehicles equipped with the 2.0l engine may experience the Malfunction Indicator Lamp (MIL) illuminating on their dashboard. This condition is often accompanied by the storage of a specific diagnostic trouble code.

Fault Codes / DTCs

When the Malfunction Indicator Lamp (MIL) illuminates for this condition, the following Diagnostic Trouble Code (DTC) may be stored in the Engine Control Module (ECM):

| Code | Description | Module | | :--- | :--- | | P044200 | EVAP Emission Control System (Small Leak) Leak Detected (Passive/Active) | ECM, -J623- |

Diagnosis and Trigger Conditions

When diagnosing the Audi Q5 EVAP system leak P044200, technicians are instructed to first verify the MIL is illuminated. The next step involves performing EVAP system testing as detailed in the ELSA Repair Manual.

Specifically, the procedure can be found under Engine>>Using the Evaporative Emissions tester >> 20 Fuel Supply >> Fuel System EVAP Leak Test >> EVAP System Leak Test, Vehicles with Fuel Tank Leak Detection Control Module (NVLD) >> EVAP system testing. If no leaks are detected during this process, the technician should continue with the populated test plan in the Guided Fault Finding (GFF) system.

Repair Procedure Summary

The TSB 01 24 13 2069166/4 outlines a specific diagnostic flow for the Audi Q5 EVAP system leak P044200. After completing the GFF test plan, the status of the DTC P044200 must be rechecked. If the code remains static (active), the technician is required to contact the Audi Technical Assistance Center (TAC).

If the DTC is passive or sporadic, no repairs should be performed, and the vehicle can be released. For vehicles still under New Vehicle Limited Warranty, if P044200 was previously set or remains static after the GFF test plan, TAC must be contacted before proceeding. Technicians are also required to attach the DTC and diagnostic log to the TAC Web Ticket, noting the specific tool used for EVAP system testing.

Important Warnings for Owners

• Do not replace parts without TAC consultation: The TSB explicitly states, "To gather information on the DTC codes for the vehicles listed above, we are asking that you contact the Audi Technical Assistance Center (TAC) before replacing any parts. This will assist us in diagnosing any potential issues with the condition noted above." This means technicians should not replace components related to the EVAP system without first consulting Audi's Technical Assistance Center.
• No warranty coverage: This Technical Service Bulletin is "informational only and not applicable to any Audi Warranty." Owners should be aware that diagnostic and repair costs related to this issue may not be covered under standard warranty terms.
• No production change: Audi states, "No changes to production have been made, as no issue has been identified," indicating that the condition is not due to a manufacturing defect requiring a design change.

Source: NHTSA ID 10251618