2021-2022 Audi Q7 Q8 Engine Misfires TSB

Symptoms of Audi Q8 Q7 Engine Misfires

Owners of 2021-2022 Audi Q7 and Q8 vehicles may experience the following symptoms related to engine misfires:

• The Malfunction Indicator Lamp (MIL) is illuminated or flashing.
• Customers report instances of engine misfires.
• Misfire Diagnostic Trouble Codes (DTCs) are stored for more than one cylinder on Bank 2.
• DTC ambient conditions show misfires occurring at or near the same timestamp.
• Misfires occur when the engine is operating at idle, referred to as "Leerlauf" in German.
• Misfires are detected when the vehicle speed is at or near 0 km/h.

It is important to note that the vehicle may not be actively misfiring when examined in a workshop.

Fault Codes / DTCs

This Technical Service Bulletin (TSB) 01 23 47 2054182/6 specifically references the following DTCs related to engine misfires:

Code	Description	Symptom	Status
P030500	Cyl.5 Misfire	Detected	passive/sporadic
P030600	Cyl.6 Misfire	Detected	passive/sporadic

Technical Background

Audi has identified that these Audi Q8 Q7 engine misfires are primarily caused by software calibration. This condition is more likely to occur under specific running conditions, especially when using winter blend fuel, which has a higher vapor pressure. The issue is most prevalent during colder winter months.

Important Warnings

Audi advises against replacing any components to address this misfire condition. Replacing parts will not resolve the customer's concern, as the root cause is a software calibration issue. Dealers are instructed not to perform unnecessary repairs.

Repair Procedure Summary

For vehicles exhibiting the conditions described in this TSB, technicians should follow these steps:

1. If the customer's vehicle matches the conditions outlined in this PSS TSB, clear the stored DTCs.
2. Perform a test drive of the vehicle.
3. If no faults return after the test drive, inform the customer that a solution is currently under development and is expected in the third quarter of 2023. This timeline is subject to change.
4. Create a Pending Service Solutions (PSS) record for the vehicle. This is done through the PSS application, accessible via the Pending Service Solutions link in Access Audi (under Related Links >> Service).

Owner Action

If your 2021-2022 Audi Q7 or Q8 is experiencing engine misfires, the Malfunction Indicator Lamp (MIL) is on or flashing, or you have stored DTCs like P030500 or P030600, you should contact your authorized Audi dealer. Explain the symptoms you are experiencing. The dealer will diagnose the vehicle and, if it matches the conditions of TSB 01 23 47 2054182/6, they will clear the fault codes and advise you about the forthcoming software update. No physical repairs or component replacements are necessary at this time for this specific issue.

Revision History

This Technical Service Bulletin 01 23 47 2054182/6 has undergone several revisions:

• Revision 6: Revised released dates.
• Revision 5 (April 7, 2021): Revised the title and header, added Model Year 2021-2022, and updated the Production Solution estimate.
• Revision 4 (September 3, 2020): Revised the Production Solution estimate and adjusted service steps, including updates related to software release.

This bulletin supersedes Technical Service Bulletin Group 01 number 21-03 dated April 7, 2021.

NHTSA ID: 10232752