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C058800 — Motor position sensor for brake booster - short circuit to ground

Motor position sensor for brake booster - short circuit to ground. 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 C058800

Porsche Taycan

Porsche 911 (992)

Porsche Panamera (971, 2017–2023)

Porsche Panamera (972, 2024–)

Porsche Cayenne (9YA)

How to read and clear C058800

  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 C058800 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 Booster

C002100Brake booster – no power output
C004800Brake booster – distance sensor defective
C055E00Primary Brake Circuit Hydraulic Leak
C056D00Voltage supply for brake-pedal travel sender - short circuit to ground
C057900Brake booster temperature sensor 2 - short circuit to ground
C057A00Brake booster temperature sensor 2 - short circuit to B+
C058900Motor position sensor for brake booster - short circuit to B+
C058A00Motor position sensor for brake booster - implausible signal
C114113Terminal 30, Open circuit
C118796Brake booster, internal fault
C1187F7Brake booster – current too high
C1187F8Brake booster, brake pedal, block detected

All 55 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.