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C12E2F2 — Right parking brake motor, Engine speed implausible

Right parking brake motor, Engine speed implausible. The Taycan, 911 (992), 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 C12E2F2

Porsche Taycan

Porsche 911 (992)

Porsche Panamera (971, 2017–2023)

Porsche Panamera (972, 2024–)

Porsche Cayenne (9YA)

How to read and clear C12E2F2

  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 C12E2F2 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 Brake Electronics

C125B01Right parking brake motor, Engine speed implausible
C129429Brake electronics – implausible signal from chassis controller
C129487Brake electronics – missing message from chassis controller
C1295F0Tire check indicator / wheel loose detection, Data implausible
C12E204Right parking brake motor, faulty
C12E219Right parking brake motor, Current High
C12E2F3Right parking brake motor, Activation takes too long
C12E2F4Right parking brake motor, locked
C12E2F5Right parking brake motor, Basic setting not successful
C12E2F6Right locking motor, air clearance too small
C12E2F7Right parking brake motor, does not implement request
C1337F0Brake electronics – forced activation by rear-differential lock

All 317 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.