2021-2026 Audi EV/Hybrid MIL for B200000 Fault Code

Audi has released a dealer communication concerning a specific issue affecting the 2024 Audi Q5 Hybrid, which may also be relevant to other Audi EV/Hybrid models from 2021 to 2026 linked by NHTSA. This communication addresses instances where the Malfunction Indicator Lamp (MIL) illuminates, accompanied by a specific fault code related to the high voltage charging system. The root cause of this particular Audi Q5 Hybrid B200000 issue is currently under investigation by Audi AG.

Symptoms

Owners of affected vehicles, particularly the 2024 Audi Q5 Hybrid, may observe the following symptom:

• The Malfunction Indicator Lamp (MIL) illuminates on the dashboard. This typically occurs after charging the hybrid battery at 110V with 100% charging power.

Fault Codes / DTCs

When diagnosing the issue, technicians will find a specific diagnostic trouble code (DTC) stored in the vehicle's systems:

Code	Description
B200000	Control module faulty stored in J1050 high voltage charger

This fault code indicates a problem with the J1050 high voltage charger control module.

Trigger Conditions

The primary condition that triggers the Audi Q5 Hybrid B200000 fault code and the MIL illumination is:

• Charging the hybrid battery at 110V using 100% charging power.

Important Owner Warnings and Recommendations

Audi has provided specific guidance for owners and dealers regarding this charging issue. It is crucial for owners to understand these recommendations to avoid triggering the fault and to ensure proper vehicle operation:

• Do not charge the vehicle at 110V with 100% charging power if you wish to avoid the MIL illumination and the Audi Q5 Hybrid B200000 fault code.
• Owners can charge their Audi Q5e (Q5 Hybrid) at 220V with 100% charging power.
• Alternatively, owners can charge their Audi Q5e (Q5 Hybrid) at 110V with 50% charging power.
• Public Level 2 charging infrastructure, which typically operates at 220V, is not affected by this issue and can be used at 100% power.
• If a customer insists on using 110V at 100% power and is not satisfied with the recommended processes, Audi AG is working on a solution. Dealers are advised to ensure customers understand the situation and that they should not use 110V at 100% power.
• If a customer refuses to take delivery of a vehicle due to this issue until a final solution is implemented, dealers should contact their Area After Sales Manager (AASM).

Manufacturer's Response and Upcoming Solution

Audi AG is actively investigating the root cause of the B200000 fault code. A technical service bulletin (TSB) with the identifier ETA CW26 is expected to be released on Monday, June 24. This TSB will provide more detailed information and a definitive solution. Dealers are instructed to enter the vehicle's VIN into the PSS system for tracking and customer follow-up once the solution is released. Audi of America (AoA) will communicate any further updates as they become available.

What Owners Should Do

If you own a 2024 Audi Q5 Hybrid and experience the MIL illumination or the Audi Q5 Hybrid B200000 fault code, or if you wish to prevent it:

• Adjust your charging habits: Prioritize charging at 220V at 100% power or 110V at 50% charging power.
• Contact your Audi dealer: If you have concerns, or if the MIL is illuminated, schedule a service appointment. Your dealer can track your vehicle's VIN in the PSS system and inform you when the official TSB (ETA CW26) and a permanent solution become available.
• Stay informed: Audi will communicate updates as needed, and more information will be provided in the upcoming TSB.

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Source: NHTSA ID: 11003020