2024-2025 Audi Q5 e HV Charger DTC B200000 Fault Clearing

Symptoms

Owners of 2024-2025 Audi Q5 e models may experience an erroneous warning message appearing in the instrument cluster. This issue is often accompanied by a Diagnostic Trouble Code (DTC) stored in the control unit for the high-voltage battery charger. A key symptom of this problem is the inability to charge the vehicle at 100% when using a 110V charging cable.

Fault Codes / DTCs

The primary fault code associated with this issue is B200000, which is described as "Control module faulty." This code is stored within the high-voltage battery charger control module, specifically identified as control module 00C6 or -J1050-.

Diagnosis / Trigger Conditions

The fault is diagnosed using the Offboard Diagnostic Information System Service (ODIS). Technicians will access the self-diagnosis function and select the "00C6 – High-voltage battery charger" module. The presence of DTC B200000, often alongside messages like "Malfunction has not occurred in current operating cycle" or "Malfunction in current or last driving cycle detected," confirms the condition.

Repair Procedure Summary

To address the 2025 Audi Q5 e HV Charger DTC B200000, Audi has outlined a specific fault clearing procedure using the ODIS system. This procedure involves several steps to reset the high-voltage battery charger control module and clear the diagnostic trouble code.

First, a technician opens ODIS and navigates to the Self-diagnosis section. They then select the "00C6 – High-voltage battery charger" control module. Within the "Control module OBD" dropdown, "Basic Setting" is chosen, followed by clicking the green arrow to proceed.

The next step is to locate and select the "Reset Status" basic setting routine. After confirming this selection, the technician moves to the "Parameters" section and chooses the "Reset" value. The system will then prompt to select an available measured value, which must be moved into the right list-box.

Once these selections are made, the technician clicks "Start." An access authorization dialog box will appear, requiring the selection of "Online activation" for the "Use case," followed by clicking "Implement." The basic settings are then started, and it is normal for the "Status" to show "Function not available."

Finally, the technician runs "DTC Memory" to view stored DTCs. They will observe the B200000 "Control module faulty" DTC, which may be listed as "Active/Static." The technician then selects "Erase OBD systems" to clear the DTC. To ensure a complete clear, they will select "Vehicle OBD" Total DTC Memory, choose "Erase Complete system," and run it. The final steps involve cycling the ignition and shifting the vehicle into drive and reverse twice to confirm the Malfunction Indicator Lamp (MIL) is no longer illuminated.

Verification

After performing the fault clearing procedure for the 2025 Audi Q5 e HV Charger DTC B200000, several verification steps are crucial to confirm the issue is resolved:

• Verify the charging function of the Universal Link Cable (ULK).
• Confirm that the vehicle charges correctly on both 220V and 110V (when set to 50%).
• Ensure that the Malfunction Indicator Lamp (MIL) is off and no related warning messages are displayed on the instrument cluster.
• Drive the vehicle, completing at least two different charging sessions.
• Re-read the DTCs in the High-voltage battery charger control module -J1050- (address word 00C6) to confirm no new fault codes are present.

Important Warnings

If any Diagnostic Trouble Codes (DTCs) are re-entered after performing the fault clearing and verification steps, it is essential to report this to the Technical Assistance Center (TAC) for further guidance.