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B154216 — ParkAssist – supply voltage too low

ParkAssist – supply voltage too low. 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 B154216

Porsche Taycan

Central Electrics

Porsche 911 (992)

BCM1 (Body Control Module 1)

Porsche Panamera (971, 2017–2023)

BCM1 (Body Control Module 1)

Porsche Panamera (972, 2024–)

BCM1 (Body Control Module 1)

Porsche Cayenne (9YA)

BCM1 (Body Control Module 1)

How to read and clear B154216

  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 B154216 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

B154016Front roof console – voltage too low
B154017Front roof console – voltage too high
B1540F0Roof electronics control module, Rear interior lamp rear button, implausible signal
B1540F1Roof electronics control module, Rear interior lamp rear indicator lamp, electrical malfunction
B1540F2Roof electronics control module, Rear search illumination, electrical malfunction
B154101Roof contour lighting, Electrical error
B154217ParkAssist – supply voltage too high
B155101Compressor for multicontour seat drvr. side, Electrical error
B155201Compressor for multicontour seat frt. pass. side, Electrical error
B155304Driver side multicontour seat control module, Faulty
B155316Driver side multicontour seat control module, Voltage too low
B155317Driver side multicontour seat control module, Voltage too high

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.