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U124E00 — Humidity sensor in fresh air intake duct, implausible message

Humidity sensor in fresh air intake duct, implausible message. 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 U124E00

Porsche Taycan

Porsche 911 (992)

Porsche Panamera (971, 2017–2023)

Porsche Panamera (972, 2024–)

Porsche Cayenne (9YA)

How to read and clear U124E00

  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 U124E00 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

U124500Sensor for carbon dioxide content in the interior, implausible message
U124600Particle sensor - no communication
U124700Particle sensor - message implausible
U124800Right rear light 2 for door speaker lighting, No communication
U124900Right rear light 2 for door speaker lighting, implausible message
U124D00Humidity sensor in fresh air intake duct, No communication
U124F00Electric auxiliary heater (12V) - message implausible
U125000Fresh air blower, front, No communication
U125100Fresh air blower, front, implausible message
U125200Rear air-conditioning system regulator – no communication
U125300Rear A/C control and display head, implausible message
U125400Air quality sensor, No communication

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.