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B1C6204 — Real time clock – defective

Real time clock – defective. The Taycan, 911 (992), 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 B1C6204

Porsche Taycan

Porsche 911 (992)

Porsche Panamera (972, 2024–)

Porsche Cayenne (9YA)

How to read and clear B1C6204

  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 B1C6204 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 Instrument Cluster

B1C4098External loudspeaker – temperature too high
B1C5AF0Left charge port impaired display active
B1C5BF0Right charge port impaired display active
B1C5CF0Charge port impaired display active
B1C5DF0Lane Change Assist/Exit Alert/Rear Cross Traffic Alert not available display active
B1C5EF0Lane Change Assist/Rear Cross Traffic Alert not available display active
B1DA3F0Intersection Assist not available display, active
B1DBAF0Display, top speed mode deactivated - active
B1DBEF0Display, pedestrian protection - active
B1DBEF1Display, pedestrian protection system error - active
B1DBFF0Display, power button faulty - active
B1DC2F0Display, emergency stop function fault - 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.