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

Audi has issued Technical Service Bulletin (TSB) 2071770/7 to address instances where the Malfunction Indicator Lamp (MIL), commonly known as the "Check Engine" light, illuminates in certain 2022-2023 Audi Q3, Q5 e, and Q7 vehicles. This TSB specifically targets the diagnostic trouble code (DTC) P240700, which relates to the EVAP emission control system.

The TSB 2071770/7 supersedes a previous bulletin, PSS TSB 2066675, and also references TSB 24-20. The primary cause of the "Audi P240700 MIL on" condition is identified as overly sensitive On-Board Diagnostics (OBD) for the EVAP system.

Symptoms

Owners of affected vehicles may observe the following symptom:

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

During workshop diagnosis, the following diagnostic trouble code (DTC) will be stored in the Engine Control Module, designated as -J623- (address word 0001):

Fault Codes / DTCs

Code	Description	Module
P2407	"EVAP emission control system leakage diagnosis pump current fluctuating"	Engine Control Module (J623)
P240700	"EVAP emission control system leakage diagnosis pump current fluctuating"	Engine Control Module (J623)

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

Diagnosis / Trigger Conditions

The technical background for the "Audi P240700 MIL on" issue points to the OBD diagnostics being too sensitive. This sensitivity can lead to the system incorrectly detecting a current fluctuation in the EVAP emission control system's leakage diagnosis pump, thereby triggering the MIL and storing the P240700 DTC.

Repair Procedure Summary

The solution for the illuminated MIL and stored DTC P240700 involves a software update for the Engine Control Module (-J623-, address word 0001). This new software addresses the condition by recalibrating the diagnostic sensitivity.

Technicians are instructed to follow the guidelines outlined in TSB 2011732, which covers Software Version Management (SVM) operating instructions. The update process requires updating the -J623- module using the appropriate SVM action code. For example, specific 2022 Q5 PHEV models utilize SVM Code Input 01A320 to apply the necessary software revision.

Required Tools or Parts

To perform the software update, service facilities will require specific diagnostic equipment:

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

Warranty Information

This repair is generally covered under Audi's New Vehicle Limited Warranty for up to 48 months or 50,000 miles, whichever comes first. For Certified Pre-Owned (CPO) vehicles, the claim type is G10, and coverage should be verified by the owner.

The service number for this bulletin is 2048, and the damage code is 0040. Labor operations include a software update (0151 0000) and charging the battery (2706 8950), with time allowances specified in the diagnostic protocol.

Important Warnings

If the vehicle is outside of any applicable warranty period, this Technical Service Bulletin is for informational purposes only. In such cases, the cost of the repair may be the owner's responsibility.

Source: NHTSA ID 11002111