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B200600 — Control module does not match vehicle

Control module does not match vehicle. 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 B200600

Porsche Taycan

Laser Scanner

Porsche 911 (992)

Engine Control Module 1WCU – Water Tank Control Unit

Porsche Panamera (971, 2017–2023)

SCR (Reduktionsmittel-Dosiersystem)

Porsche Panamera (972, 2024–)

WCU – Water Tank Control Unit

Porsche Cayenne (9YA)

SCR (Reduktionsmittel-Dosiersystem)WCU – Water Tank Control Unit

How to read and clear B200600

  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 B200600 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 Laser Scanner

B200047Control unit – function restriction
B200094Control unit – function restriction
B200096Control unit – function restriction
B2000F0Control unit – function restriction
B2000F3Ctrl. module faulty
B200500Coding
B2009F0Function restriction, temperature - below limit value
B200FF0Control unit – function restriction
B201000Calibration
B201200Coding
B2F0100Development code 1
B2F0200Development code 2

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.