2022-2023 Audi Q7/Q5/Q3 MIL On for DTC P240700

Audi has released Technical Service Bulletin (TSB) 2071770/8 to address an issue affecting certain 2022-2023 Audi Q3, Q5, Q5 PHEV, and Q7 models. Owners of these vehicles may experience an illuminated Check Engine Light (MIL) accompanied by a specific diagnostic trouble code. This TSB supersedes a previous bulletin, Group 01 number 24-22, dated May 14, 2024, and also replaces Pending Service Solution (PSS) TSB 2066675: 01 PSS MIL on DTC P240700 Evap leak detection pump circuit. The TSB itself has undergone several revisions, with revision 8 adding models to the SVM table, revision 7 correcting the SVM table on May 15, 2024, and revision 6 updating the header and SVM table for the 2022 Q7 on May 10, 2024.

Symptoms

Owners will primarily notice one key symptom:

• The "MIL is illuminated" (Malfunction Indicator Lamp, commonly known as the Check Engine Light).

Fault Codes / DTCs

When scanned, the Engine Control Module (-J623-, address word 0001) may store the following diagnostic trouble code:

Code	Description
P2407	"EVAP emission control system leakage diagnosis pump current fluctuating"
P240700	"EVAP emission control system leakage diagnosis pump current fluctuating"

No other relevant event memory entries are typically logged in the engine control unit when this specific issue is present.

Diagnosis / Trigger Conditions

The root cause of the illuminated MIL and the Audi Q7 P240700 fault code is an overly sensitive On-Board Diagnostics (OBD) system. The diagnostic routine for the EVAP emission control system's leakage detection pump current is too sensitive, leading to false positive fault detections. This sensitivity can cause the system to incorrectly flag a problem when none exists.

Important Warnings for High-Voltage Vehicles

For Audi Q5 PHEV models, which are equipped with high-voltage components, a critical step must be followed during the software update:

• The high-voltage cable must be removed BEFORE the SVM code is entered. This prevents the high-voltage battery from charging during the software update. Charging the high-voltage battery during a software update can cause damage to the high-voltage components.

Repair Procedure Summary

The solution for the Audi Q7 P240700 and related models involves updating the software in the Engine Control Module (-J623-, address word 0001). This new software addresses the overly sensitive OBD diagnostics, preventing the incorrect triggering of the P240700 DTC.

Technicians will need to follow all instructions outlined in TSB 2011732, titled "00 Software Version Management (SVM), operating instructions." The update is performed using SVM action code 01A320. The specific software part numbers and versions to be updated are as follows:

• Q7 2.0l MY2023: Old Software Part Number 4M0.906.259.AB (Versions 0002, 0003, 0004) to New Software Part Number 4M0.906.259.AB (Version 0005 or higher).
• Q7 2.0l MY2022: Old Software Part Number 4M0.906.259.AE (Version 0001) to New Software Part Number 4M0.906.259.AE (Version 0002 or higher).
• Q3 MY2022: Old Software Part Number 83A.906.259.D (Version 0001) to New Software Part Number 83A.906.259.D (Version 0002 or higher).
• Q5 MY2022: Old Software Part Number 80A.906.259.AB (Version 0002) to New Software Part Number 80A.906.259.AB (Version 0003 or higher).
• Q5 PHEV MY2022: Old Software Part Number 80A.906.259.AA (Version 0001) to New Software Part Number 80A.906.259.AA (Version 0002 or higher).
• Q5 MY2023: Old Software Part Number 80A.906.259.AE (Versions 0002, 0003) to New Software Part Number 80A.906.259.AE (Version 0004 or higher).
• Q5 PHEV MY2023: Old Software Part Number 80A.906.259.AD (Version 0001) to New Software Part Number 80A.906.259.AD (Version 0002 or higher).

Required Tools

To perform the software update, technicians will need:

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

Warranty Information

For vehicles still under warranty, this service is covered under the following details:

• Claim Type: If the vehicle is outside of any warranty, this Technical Service Bulletin is informational only.
• Service Number: 2048
• Damage Code: 0040
• Labor Operations (With software Update):
  • Software Update: 0151 0010 (Refer to SRT for associated operations)
  • Software Update: 0151 0060 (Labor according to diagnostic log)
• Labor Operations (Without software update):
  • GFF: 0150 0010 (Refer to SRT for associated operations)
  • GFF: 0150 0060 (Labor according to diagnostic log)
• Road test prior to the service: No allowance, 0 TU
• Road test after the service: No allowance, 0 TU

All warranty claims must adhere to the Audi Warranty Policies and Procedures Manual.

Owner Action

If you own a 2022-2023 Audi Q3, Q5, Q5 PHEV, or Q7 and are experiencing an illuminated Check Engine Light with the Audi Q7 P240700 diagnostic trouble code, you should contact an authorized Audi dealer. Inform them about Technical Service Bulletin 2071770/8. The dealer will be able to diagnose the issue and perform the necessary software update to resolve the overly sensitive OBD diagnostics.

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Source: NHTSA ID: 10257321