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B1AB211 — Door control unit, rear light output 2 pin C1 – short circuit to ground

Door control unit, rear light output 2 pin C1 – short circuit to ground. The Taycan, Panamera (971), Panamera (972) and Cayenne 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 B1AB211

Porsche Taycan

Door Module, Rear DriverDoor Module, Rear Passenger

Porsche Panamera (971, 2017–2023)

Door Module, Rear DriverDoor Module, Rear Passenger

Porsche Panamera (972, 2024–)

Tuer_FSh (Tuere hinten Fahrerseite)Tuer_BFSh (Tuere hinten Beifahrerseite)

Porsche Cayenne (9YA)

Door Module, Rear DriverDoor Module, Rear Passenger

How to read and clear B1AB211

  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 B1AB211 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 →

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Other codes of the Door Module, Rear Driver

B18B429Exterior door handle actuator, Implausible signal
B18B501Exterior door handle, end position, Electrical malfunction
B18B529Exterior door handle, end position, Implausible signal
B1908F0Crash response, active
B1AB011Door control unit, rear light output 1 pin C3 – short circuit to ground
B1AB013Door control unit, rear light output 1 pin C3 – open circuit
B1AB213Door control unit, rear light output 2 pin C1 – open circuit
B1AB411Door control unit, rear light output 3 pin B1 – short circuit to ground
B1AB413Door control unit, rear light output 3 pin B1 – open circuit
B1AB611Door control unit, rear light output 4 pin C12 – short circuit to ground
B1AB613Door control unit, rear light output 4 pin C12 – open circuit
B200042Control unit – function restriction

All 68 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.