2022-2024 Audi Q5 / A4 EPC Light and Drive System Fault TSB

Audi has released Technical Service Bulletin (TSB) 2076356/5 to address issues where the "EPC light is on" or a "drive system fault appears in the instrument cluster" in certain 2022-2024 Audi Q5 and 2023-2024 Audi A4/A5 Sportback models. This TSB, released on February 24, 2026, details a software-related problem within the engine control unit.

This condition is primarily observed in vehicles equipped with the DMSA Engine. Owners experiencing these warnings should have their vehicle inspected by an authorized Audi service center to apply the necessary software update.

Symptoms

Owners may notice the following warnings displayed in their vehicle's instrument cluster:

• "The EPC light is on."
• "A drive system fault appears in the instrument cluster."

These messages indicate a potential issue with the engine's electronic power control or the overall drive system.

Fault Codes / DTCs

When diagnosing the issue, technicians will find specific event memory entries logged in the engine control unit. These diagnostic trouble codes (DTCs) point to a software malfunction:

Code	Description	Module
P060C00	"Internal Control Module Main Processor Performance with DFCC 44160"	Engine Control Unit
U041600	"Invalid Data Received from Vehicle Dynamics Control Module with DFCC 34193"	Engine Control Unit

These codes confirm the presence of the software issue addressed by TSB 2076356/5, which can cause the Audi Q5 EPC light P060C00 to illuminate.

Diagnosis and Trigger Conditions

The root cause of these symptoms and fault codes is identified as a software issue within the engine control unit, specifically the -J623- module (address word 0001). This software anomaly leads to incorrect internal processor performance readings and invalid data reception from the vehicle dynamics control module.

Repair Procedure Summary

The resolution for these engine control unit drive system faults involves updating the software in the engine control module. Technicians will perform the following steps:

1. For vehicles equipped with high-voltage components, the high-voltage cable must be removed before entering the SVM code. This critical step prevents unintended charging of the high-voltage battery during the software update, which could otherwise damage high-voltage components.
2. Follow all instructions detailed in TSB 2011732, titled "00 Software Version Management (SVM), operating instruction."
3. Update the -J623- (0001) engine control unit using the SVM action code 01A267, as specified in the table below, to install the new software version.

Required Software Updates

The following table outlines the specific software part numbers and versions required for the update, along with the SVM Code Input (01A267) needed to perform the update:

Model	Old Software Part Number	Old Software Version	New Software Part Number	New Software Version	SVM Code Input
MY22 Q5	80A.907.115.B	0001 / 0002	80A.907.115.B	0003	01A267
MY23 Q5	80A.907.115.C	0001	80A.907.115.C	0002	01A267
MY24 Q5	80A.907.115.E	0001 / 0002	80A.907.115.E	0003	01A267
MY23 A4/A5	8W0.907.115.AM	0001	8W0.907.115.AM	0002	01A267
MY24 A4/A5	8W0.907.115.AS	0001 / 0002	8W0.907.115.AS	0003	01A267

Important Warnings for Owners

Audi has provided several crucial advisories for owners and technicians regarding this software update:

• High-Voltage Battery Safety: "Charging the high-voltage battery during a software update can damage the high-voltage components." This is why the high-voltage cable must be disconnected prior to the update for relevant vehicles.
• Mandatory Update: "The engine control unit software must be updated on this vehicle." This update is necessary to resolve the underlying software issue causing the Audi Q5 EPC light P060C00 and other fault codes.
• Chip Tuning / Aftermarket Modifications: Owners who have had their engine control unit altered by chip tuning or have non-genuine components retrofitted should be aware that updating the engine control unit software may render chip tuning ineffective or even damage the unit. Audi will not accept liability for damage caused by updating software on a chipped or modified ECU, nor will they cover such damage under warranty. Owners should consult their tuning company or aftermarket parts installer before proceeding with the update.
• Control Unit Reconfiguration: After the software update, various control units may need to be reconfigured to ensure proper function and compatibility with other vehicle systems.
• Liability for Damage: Neither AUDI AG nor the service facility will be held responsible for damage resulting from the software update if non-genuine retrofits or modifications were present, or for damage incurred if the update is not performed.
• Documentation: Technicians are instructed to make a note on the repair order, before it is signed by the customer, detailing these warnings and discussions, and to include this information in the customer's file.

Warranty Information

For vehicles still under warranty, this software update should be covered. The claim details are as follows:

• Claim Type: Informational only if the vehicle is outside of any warranty.
• Service Number: 2470
• Damage Code: 0039
• Labor Operations: Software Update (Operation codes 0151 0010 and 0151 0060).
• Claim Comment: As per TSB 2076356/5.

All warranty claims must adhere to the Audi Warranty Policies and Procedures Manual and are subject to review and audit by Audi Warranty.

Owner Action

If you own a 2022-2024 Audi Q5 or a 2023-2024 Audi A4/A5 Sportback and are experiencing the EPC light illuminating or a drive system fault message, contact your authorized Audi dealership. Inform them about the symptoms and reference TSB 2076356/5. Be prepared to discuss any aftermarket modifications or chip tuning with your service advisor, as this may impact the repair and warranty coverage.

NHTSA ID: 11029383