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B1A7000 — Data upload failed

Data upload failed. The Taycan report this code; below is which control unit sets it on each model and how to read and clear it.

Which models and control units set B1A7000

Porsche Taycan

OTA Function Control Unit

How to read and clear B1A7000

  1. Plug a standard ENET (Ethernet-to-OBD) cable into your Porsche's OBD port and your Mac or Windows PC.
  2. Open STEUER14, pick your car and run a fault scan: every control unit is read, and B1A7000 shows with its status, its full description and the freeze frame when the unit stores one.
  3. Fix the cause first, then clear the fault memory and scan again to check it stays away. Reading and clearing fault codes is free on every control unit.

More about fault memory in the manual →

Download STEUER14 — free fault reading

Other codes of the OTA Function Control Unit

B184C00Release active
B199AF0Online remote update – software version inconsistent
B200000Control unit – function restriction
B200087Control module, Software incompatible
B2008F0Function restriction, temperature – above limit value
B2009F0Function restriction, temperature - below limit value
U006400Infotainment CAN bus faulty
U10AD00Data bus display/operation, No communication

All 40 codes of this control unit →

Fault names come from the manufacturer's diagnostic data. STEUER14 is independent and not affiliated with Porsche AG. A code tells you what a control unit detected, not always which part failed — check wiring, supply voltage and related codes before replacing parts. STEUER14 shows each fault's full description, status and freeze frame on the car.