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B1C2EF0 — Rear Cross Traffic Alert not available display, active

Rear Cross Traffic Alert not available display, active. 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 B1C2EF0

Porsche Taycan

Porsche 911 (992)

Porsche Panamera (971, 2017–2023)

Porsche Panamera (972, 2024–)

Porsche Cayenne (9YA)

How to read and clear B1C2EF0

  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 B1C2EF0 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 →

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Other codes of the Instrument Cluster

B19E7F0Display, active lane guidance faulty - active
B19F304Indicator lamp for chassis control, faulty
B19F504Indicator lamp, faulty
B19F6F1Instrument cluster control module, Warning light, internal error
B1ABF00Display, transmission fault indication - active
B1C09F0Emergency call display, active
B1C2FF0Exit Alert not available display active
B1C30F0Fire hazard display, active
B1C32F0Cooling system error display active
B1C33F0Display emergency stop function error, active
B1C34F0Electric drive overheated display active
B1C35F0Park pawl not available display active

All 176 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.