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B194FF1 — Rear air conditioning system regulator – message implausible
Rear air conditioning system regulator – message implausible. 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 B194FF1
How to read and clear B194FF1
- 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 B194FF1 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 Air Conditioning
| B18D6F1 | Surface heating in right rear center console, Temperature sensor defective |
| B194E04 | Steuergerät für Luftzusatzheizung 2, defekt |
| B194EF0 | Steuergerät für Luftzusatzheizung 2, Keine Kommunikation |
| B194EF1 | Steuergerät für Luftzusatzheizung 2, unplausible Botschaft |
| B194F04 | Rear air-conditioning system regulator – defective |
| B194FF0 | Rear air-conditioning system regulator – no communication |
| B195216 | Supply voltage for potentiometer (5 V) - above limit value |
| B195217 | Supply voltage for potentiometer (5 V) - below limit value |
| B195901 | Front defrost flap air outlet temperature sensor, Electrical error |
| B195F11 | Rear sunlight photo sensor, Short circuit to Ground (GND) |
| B195F15 | Rear sunlight photo sensor, Open circuit/short circuit to B+ |
| B196011 | Rear sunlight photo sensor 2, Short circuit to Ground (GND) |
All 418 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.