2022-2023 Audi MIL On DTC P240700 Evap Leak Detection

Symptoms of Audi Q8 MIL P240700

Owners of certain 2022-2023 Audi gasoline engine vehicles may notice the "MIL Light On" (Malfunction Indicator Lamp) illuminated on their dashboard. This warning light indicates that the vehicle's onboard diagnostic system has detected a potential issue, often related to emissions.

Fault Codes / DTCs

When the "MIL Light On" symptom appears, a diagnostic scan performed by a technician will likely reveal the following Diagnostic Trouble Code (DTC) stored in the Engine control module, identified as J623 (address word 001):

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

This specific DTC, P240700, points to a fault within the evaporative emission system's leak detection pump circuit. The code is typically recorded as "Passive/Static" within the vehicle's system memory.

Diagnosis and Trigger Conditions

The primary condition that triggers this issue is the detection of an anomaly within the Evap leak detection pump circuit, which subsequently leads to the storage of DTC P240700. For accurate diagnosis, the TSB specifies that the vehicle's event memory should not contain any other significant fault entries alongside P240700. This helps ensure that the illuminated "MIL Light On" is directly attributable to this particular known evaporative system issue, often referred to as the Audi Q8 MIL P240700 problem.

Important Warnings for Owners

Audi has issued a crucial advisory for vehicles affected by this condition. If your 2022-2023 Audi is displaying the "MIL Light On" with DTC P240700, it is imperative that you do not replace any components related to the evaporative emission system. The manufacturer explicitly states that replacing parts at this stage will not resolve the customer's concern, as a definitive, permanent solution is still under active development by Audi.

Repair Procedure Summary

Audi Technical Service Bulletin 01 23 54 2066675/3 outlines a temporary service procedure for addressing the "MIL Light On" with DTC P240700. Technicians are instructed to perform the following steps:

1. Access the Engine control module (J623) and delete the stored DTC P240700.
2. After clearing the code, the vehicle should be released back to the customer.
3. Customers must be informed that a permanent solution for this issue is expected to become available by the end of the third quarter of 2023. It is important to note that this timeline is subject to change.
4. A PSS (Pending Service Solutions) record must be created in the PSS application. This record helps Audi track the prevalence of the Audi Q8 MIL P240700 issue and monitor affected vehicles as the permanent fix is developed.

This procedure serves as an interim measure to address the illuminated MIL while Audi engineers work on a comprehensive, long-term resolution.

Warranty Information

Service for the Audi Q8 MIL P240700 issue, as described in TSB 01 23 54 2066675/3, is generally covered under warranty. Applicable claim types include "110 up to 48 Months/50,000 Miles" for new vehicles and "G10 for CPO Covered Vehicles" (Certified Pre-Owned). If the vehicle is outside of its warranty period, this Technical Service Bulletin serves as informational guidance only.

The specific warranty codes for this service are:

• Service Number: 2048
• Damage Code: 0040
• Diagnostic Time: 0150 0000 (GFF - Checking and clearing fault codes included in existing labor operations)

No allowance is provided for road tests prior to or after the service procedure, as the diagnostic time covers the necessary steps.

What Owners Should Do

If your 2022-2023 Audi vehicle displays the "MIL Light On" and you suspect it's related to DTC P240700, you should schedule an appointment with your authorized Audi dealer. The service will involve clearing the fault code and documenting the issue as per TSB 01 23 54 2066675/3. Remember, no parts replacement is advised at this time.

This bulletin, 01 23 54 2066675/3, was issued on April 7, 2023, and supersedes a previous bulletin, Group 01 number 23-39, dated January 27, 2023. It specifically applies to Model Year 2022 and 2023 gasoline engines across a wide range of Audi models.

---

Source: NHTSA ID: 10234561