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C101E07 — Button for Hold assist, mechanical malfunction

Button for Hold assist, mechanical malfunction. 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 C101E07

Porsche Taycan

Porsche 911 (992)

Porsche Panamera (971, 2017–2023)

Porsche Panamera (972, 2024–)

Porsche Cayenne (9YA)

How to read and clear C101E07

  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 C101E07 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 Brake Electronics

C100E11Right locking motor power supply - short circuit to ground
C100E12Right locking motor power supply - short circuit to B+
C100E13Right parking brake motor voltage supply, Open circuit
C100F00Left parking brake motor, movem. diffic.
C101000Right parking brake motor, movem. diffic.
C101600Development error
C102E00Switch-off due to excessive temperature
C104AF0Control module, Incorrect Vehicle Identification Number (VIN)
C105400Left front tire, Tire pressure warning - too low
C105500Left front tire, Tire pressure warning - flat tire
C105600Right front tire, Tire pressure warning - too low
C105700Right front tire, Tire pressure warning - flat tire

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.