2022-2023 Audi Q5 PHEV, Q3, Q7 MIL On with DTC P240700

Audi has issued Technical Service Bulletin (TSB) 2071770/6 to address instances of the Malfunction Indicator Lamp (MIL) illuminating in certain 2022-2023 Audi Q5 PHEV, Q3, and Q7 models. This TSB, dated May 10, 2024, supersedes previous bulletins, including TSB 24-16 dated March 29, 2024, and Pending Service Solution (PSS) TSB 2066675.

The primary cause for the MIL illumination and associated diagnostic trouble code is identified as an overly sensitive On-Board Diagnostics (OBD) system. This sensitivity can lead to false readings related to the EVAP system, even when no actual leak is present.

Symptoms

Owners may observe the following symptom:

• The Malfunction Indicator Lamp (MIL) is illuminated on the instrument cluster.

Fault Codes / DTCs

When scanned, the Engine Control Module (-J623-, address word 0001) may store the following Diagnostic Trouble Code (DTC):

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

No other relevant fault memory entries are typically logged in the engine control unit when this specific condition occurs. This is the exact issue that triggers the Audi Q7 DTC P240700.

Diagnosis

The underlying technical background for this condition is that the OBD diagnostics are too sensitive. This sensitivity causes the system to erroneously detect fluctuations in the EVAP emission control system leakage diagnosis pump current, triggering the MIL and storing the DTC P240700.

Repair Procedure Summary

The resolution for this condition involves updating the software in the Engine Control Module (-J623-). This update recalibrates the OBD diagnostic sensitivity, preventing the false detection of EVAP system issues. The repair procedure outlined in TSB 2071770/6 requires technicians to:

1. Follow all instructions detailed in TSB 2011732, which covers Software Version Management (SVM) operating instructions.
2. Update the Engine Control Module (-J623-) using the appropriate SVM action code. The specific software part numbers and versions are listed below:

Model	Old Software Part Number	Old Software Version	New Software Part Number	New Software Version	SVM Code Input
Q7 2.0l MY2022	4M0.906.259.AE	0001	4M0.906.259.AE	0002
Q3 MY2022	83A.906.259.D	0001	83A.906.259.D	0002
Q5 PHEV MY2022	80A.906.259.AA	0001	80A.906.259.AA	0002	6
Q5 PHEV MY2023	80A.906.259.AD	0001	80A.906.259.AD	0002

During the software update process, the vehicle's battery must be charged to ensure a stable power supply.

Required Tools

Technicians will need the following specialized tools to perform the software update:

• VAS 6160/VAS 6150: A VAS tester equipped with the current version of ODIS (Windows 10) diagnostic software.

Important Considerations

Owners should be aware of the following regarding this service bulletin:

• Warranty Coverage: This Technical Service Bulletin is informational only if the vehicle is outside of its applicable warranty period. Warranty claims are generally covered for up to 48 months or 50,000 miles, and under the G10 program for Certified Pre-Owned (CPO) vehicles.
• Part and Service References: All part and service references provided in TSB 2071770/6 are subject to change or removal. Always consult with an Audi Parts Department or ETKA for the most current information.
• Repair Manual: Technicians should refer to the Repair Manual for specific instructions on fasteners, bolts, nuts, and screws that may require replacement during the repair.

Owner Action

If you own a 2022-2023 Audi Q5 PHEV, 2022 Audi Q3, or 2022 Audi Q7 and are experiencing a 'MIL on' light with the Audi Q7 DTC P240700, you should contact an authorized Audi dealer. The dealer will diagnose the issue and, if applicable, perform the necessary Engine Control Module software update. This repair is typically covered under warranty for eligible vehicles.

NHTSA ID: 11002209