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B1981F2 — Heating element 3 control module, Heating circuit 1 open circuit / short circuit to B+
Heating element 3 control module, Heating circuit 1 open circuit / short circuit to B+. 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 B1981F2
How to read and clear B1981F2
- 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 B1981F2 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
| B198104 | Heating element 3 control module, Faulty |
| B198116 | Heating element 3 control module, Voltage too low |
| B198117 | Heating element 3 control module, Voltage too high |
| B198198 | Heating element 3 control module, Temperature too high |
| B1981F0 | Heating element 3 control module, Hardware coding, electrical malfunction |
| B1981F1 | Heating element 3 control module, Heating circuit 1 short circuit to ground |
| B1981F3 | Heating element 3 control module, Heating circuit 2 short circuit to ground |
| B1981F4 | Heating element 3 control module, Heating circuit 2 open circuit / short circuit to B+ |
| B1981F5 | Heating element 3 control module, Heating circuit 3 short circuit to ground |
| B1981F6 | Heating element 3 control module, Heating circuit 3 open circuit / short circuit to B+ |
| B1981F7 | Heating element 3 control module, Temperature sensor 1 short circuit to ground |
| B1981F8 | Heating element 3 control module, Temperature sensor 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.