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B146029 — Button for rear window shade, Implausible signal

Button for rear window shade, Implausible signal. 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 B146029

Porsche Taycan

Central ElectricsDoor Module, DriverDoor Module, PassengerDoor Module, Rear DriverDoor Module, Rear Passenger

Porsche 911 (992)

BCM1 (Body Control Module 1)Tuer_FS (Tuere vorne Fahrerseite)Tuer_BFS (Tuere vorne Beifahrerseite)

Porsche Panamera (971, 2017–2023)

BCM1 (Body Control Module 1)Door Module, DriverDoor Module, PassengerDoor Module, Rear DriverDoor Module, Rear Passenger

Porsche Panamera (972, 2024–)

BCM1 (Body Control Module 1)Tuer_FS (Tuere vorne Fahrerseite)Tuer_BFS (Tuere vorne Beifahrerseite)Tuer_FSh (Tuere hinten Fahrerseite)Tuer_BFSh (Tuere hinten Beifahrerseite)

Porsche Cayenne (9YA)

BCM1 (Body Control Module 1)Door Module, DriverDoor Module, PassengerDoor Module, Rear DriverDoor Module, Rear Passenger

How to read and clear B146029

  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 B146029 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 Central Electrics

B142729PASM button – signal implausible
B143A11Valet parking lock button, Short circuit to ground
B143A29Valet parking lock button, Implausible signal
B143B11Valet parking indicator lamp, Short circuit to ground
B143B15Valet parking indicator lamp, Open circuit/short circuit to B+
B146011Button for rear window shade, Short circuit to ground
B146F11Button for rear spoiler adjustment, Short circuit to ground
B146F29Button for rear spoiler adjustment, Implausible signal
B148811A/C clutch, Short circuit to ground
B148815A/C clutch, Open circuit/short circuit to B+
B149404Front A/C display control head 1, Faulty
B149416Rear A/C Control Head 1, Voltage too low

All 1472 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.