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B137A04 — Outside air quality/air humidity sensor, Faulty
Outside air quality/air humidity sensor, Faulty. 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 B137A04
How to read and clear B137A04
- Plug a standard ENET (Ethernet-to-OBD) cable into your Porsche's OBD port and your Mac or Windows PC.
- Open STEUER14, pick your car and run a fault scan: every control unit is read, and B137A04 shows with its status, its full description and the freeze frame when the unit stores one.
- 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 readingOther codes of the Central Electrics
| B1350F1 | Massage button, Event, frt. pass. side |
| B136604 | Weather sensor (rain/light/moisture) – defective |
| B136629 | Weather sensor (rain, light, moisture) – signal implausible |
| B136676 | Weather sensor (rain-light-humidity) – incorrect installation position |
| B137829 | Rear fog light button – signal implausible |
| B137929 | Fog light button – signal implausible |
| B139700 | Function restriction, crash signal |
| B13C507 | Sunroof shade button, mechanical malfunction |
| B13C529 | Button for roof blind - signal implausible |
| B140329 | Terminal 15 signal line – signal implausible |
| B140611 | ambient light.chan. 1, Short circuit to ground |
| B140615 | ambient light.chan. 1, Open circuit/short circuit to B+ |
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.