2022-2023 Audi MIL On DTC P240700 Evap Leak Circuit TSB

Symptoms

Owners of affected 2022-2023 Audi vehicles may notice the "MIL Light On" (Malfunction Indicator Lamp) illuminated on their dashboard. This is the primary customer complaint associated with this issue.

Fault Codes / DTCs

When the "MIL Light On" illuminates, a diagnostic scan may reveal the following Diagnostic Trouble Code (DTC) stored in the vehicle's Engine control module, J623 (address word 001):

Code	Description	Module
P240700	Evap leak detection pump circuit	Engine control module, J623

It is important that the vehicle's event memory does not contain any other relevant entries for this specific condition.

Diagnosis / Trigger Conditions

The Audi MIL On P240700 fault is triggered when the Engine control module, J623, detects an issue with the Evap leak detection pump circuit. The DTC P240700 will be stored as Passive/Static. Technicians should confirm that no other fault codes are present in the event memory that might indicate a different underlying problem.

Important Warnings

Audi Technical Service Bulletin 2066675/4 explicitly states a critical warning for this condition:

"Do not replace any components for this condition since it will not resolve the customer's concern."

This means that replacing parts related to the Evap leak detection pump circuit will not fix the Audi MIL On P240700 issue, as a permanent solution is still under development by the manufacturer.

Repair Procedure Summary

For vehicles exhibiting the Audi MIL On P240700, the current service procedure outlined in TSB 2066675/4 is as follows:

1. Clear the DTC: The technician should delete the stored DTC P240700 from the vehicle's system.
2. Inform the Customer: Owners should be advised that a permanent solution for the Evap leak detection pump circuit issue is expected to be available by the end of the third quarter of 2023. It should be emphasized that no repairs are currently necessary, and component replacement is not recommended.
3. Create a PSS Record: A Pending Service Solutions (PSS) record must be created in the PSS application. This can be done via the PSS link in Access Audi (under Related Links >> Service) or through the Technical Assistance page in Elsa.

This TSB, identified as 01 PSS MIL or 01 23 55 2066675/4, supersedes previous bulletin 01 23-54 dated April 7, 2023, with revision 4 updating the warranty statement. Revision 3 (April 7, 2023) and Revision 2 (January 27, 2023) previously updated the header, models, and service release date.

What Owners Should Know

This Technical Service Bulletin is primarily informational for dealers. It clarifies that a production solution for the Evap leak detection pump circuit issue is still under development. Owners should not expect any immediate component replacements or repairs for the Audi MIL On P240700 fault. The TSB also notes that it is not applicable to any Audi Warranty, meaning any future repair may or may not be covered depending on the specific circumstances and warranty terms.

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Source: NHTSA ID: 10234562