2022-2023 Audi Q5, Q3 P240700 EVAP Leak TSB

Symptoms

Owners of affected Audi Q3 and Q5 models may notice that the Malfunction Indicator Lamp (MIL) is illuminated on their dashboard. This warning light indicates a potential issue detected by the vehicle's diagnostic system.

Fault Codes / DTCs

When the MIL is illuminated, a diagnostic scan may reveal the following fault code stored in the Engine Control Module (-J623-, address word 0001):

• DTC P2407 (P240700): "EVAP emission control system leakage diagnosis pump current fluctuating"

No other relevant fault codes are typically logged in the engine control unit in conjunction with this specific issue.

Diagnosis / Trigger Conditions

The root cause of the illuminated MIL and the stored DTC P240700 is identified as overly sensitive On-Board Diagnostics (OBD) for the EVAP system. This sensitivity can lead to false detection of a fluctuating current in the leak detection pump, even when no actual leakage or malfunction is present. This condition triggers the Malfunction Indicator Lamp (MIL) and stores the specific fault code P240700, which is the core of the Audi Q5 P240700 EVAP leak concern.

Repair Procedure Summary

Audi Technical Service Bulletin 2071770/5 addresses the Audi Q5 P240700 EVAP leak by providing a software update for the Engine Control Module (ECM). This TSB, dated March 29, 2024, supersedes a previous bulletin (Group 01 number 24-08 dated February 19, 2024) and the Pending Service Solution (PSS) TSB 2066675.

The repair process involves updating the software in the Engine Control Module (ECM), also identified as -J623-. Technicians must follow the instructions outlined in TSB 2011732, which details the procedures for Software Version Management (SVM) operations. The ECM software is updated using the SVM action code 01A320.

Specific software part numbers and versions are provided for different models and model years:

• For 2022 Audi Q3: The old software part number 83A.906.259.D version 0001 is updated to 83A.906.259.D version 0002 or higher.
• For 2022 Audi Q5 PHEV: The old software part number 80A.906.259.AA version 0001 is updated to 80A.906.259.AA version 0002 or higher.
• For 2023 Audi Q5 PHEV: The old software part number 80A.906.259.AD version 0001 is updated to 80A.906.259.AD version 0002 or higher.

Required Tools

To perform the software update, technicians will need the following specialized equipment:

• VAS 6160 / VAS 6150: A VAS tester running the current version of ODIS (Offboard Diagnostic Information System) on a Windows 10 operating system.

Warranty Information

This software update is covered under Audi's warranty for vehicles up to 48 months or 50,000 miles, whichever occurs first. For Audi Certified Pre-Owned (CPO) vehicles, the claim type G10 applies, which requires verification of the owner. The service number for this operation is 2048, with a damage code of 0040. The labor operation code for the software update, including checking for DTCs, is 0151 0000.

Important Warnings

Owners should be aware of the following:

• "If the vehicle is outside of any warranty, this Technical Service Bulletin is informational only." This means that if your vehicle is no longer under warranty, you may be responsible for the cost of this repair.
• "All part and service references provided in this TSB (2071770) are subject to change and/or removal. Always check with your Parts Department and/or ETKA for the latest information and parts bulletins."

Source: NHTSA ID 10252442