2021-2022 Audi PHEV Red Battery Symbol DTC P0B1300

Owners of 2021-2022 Audi A6, A7, and Q5 Plug-in Hybrid Electric Vehicles (PHEV) may encounter a specific warning in their instrument cluster: a red battery symbol accompanied by the text "Electrical system: fault. Safely stop vehicle". This issue is detailed in Audi Technical Service Bulletin (TSB) 2062211/2, which supersedes an earlier bulletin, Group 93 number 21-43, dated February 17, 2021.

The TSB notes that after cycling the ignition off and on again, the warning lamp typically clears, and the vehicle operates normally. This bulletin identifies an internal communication issue between the battery junction box and the power/voltage sensor as the underlying cause, though it is considered unlikely for customers to experience the issue frequently.

Symptoms

If your 2021-2022 Audi PHEV is affected by this condition, you will observe the following:

• A red battery symbol displayed in the instrument cluster.
• A corresponding text message: "Electrical system: fault. Safely stop vehicle".
• The warning light and message typically disappear after switching the ignition off and then on again.

Fault Codes / DTCs

When this issue occurs, the hybrid battery management module, J840 (address word 008C), will store specific Diagnostic Trouble Codes (DTCs). The primary code is P0B1300, which relates to a variation in the hybrid/HV battery current measurement sender.

It is important to note that this TSB specifically applies if these DTC combinations are logged. If other DTCs are present in addition to these, the TSB does not apply, and further diagnosis outside of this bulletin is required.

Important Warnings for Owners

Audi's TSB 2062211/2 provides critical guidance for this specific issue:

• Do not replace any components for this condition, as doing so will not resolve the customer's concern.
• A permanent software solution is currently under development and is expected to be available by the end of 2021. Until then, no repairs are necessary.

What Owners Should Do

If you experience the Audi PHEV red battery symbol and the accompanying warning message, you should contact your authorized Audi dealership. While no immediate repair is available, the dealership can create a Pending Service Solutions (PSS) record for your vehicle. This record helps Audi track the issue and ensures you are informed once the software solution becomes available. There is no need to replace any parts for this condition.

Warranty Information

This issue is covered under Audi's standard warranty for up to 48 months or 50,000 miles, whichever comes first. For Certified Pre-Owned (CPO) vehicles, coverage is provided under the G10 claim type. If your vehicle is outside of its warranty period, this Technical Service Bulletin serves as informational guidance only.

Service Number: 9327 Damage Code: 0039 Diagnostic Time: GFF 0151 0000 (Maximum 20 Technical Units)

Road test prior to service procedure: No allowance (0 Technical Units)

Claim Comment: As per TSB #2062211/2