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B158131 — Electric interior heater – no communication

Electric interior heater – no communication. 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 B158131

Porsche Taycan

Thermal Management

Porsche 911 (992)

TME (Thermomanagement)

Porsche Panamera (971, 2017–2023)

TME (Thermomanagement)

Porsche Panamera (972, 2024–)

TME (Thermomanagement)

Porsche Cayenne (9YA)

TME (Thermomanagement)

How to read and clear B158131

  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 B158131 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 →

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Other codes of the Thermal Management

B158012Shut-off valve 2 for refrigerant, Short circuit to B+
B158013Shut-off valve 2 for refrigerant, Open circuit
B158104Electric interior heater (Z189), faulty
B158116Electric interior heater – voltage too low
B158117Electric interior heater – voltage too high
B158129Electric interior heater – signal implausible
B15814AElectric interior heater – part number implausible
B158192Electric interior heater – fault
B158198Electric interior heater, 12 V electronics – temperature too high
B1581F0Electric interior heater – temperature 1 too high
B1581F1Electric interior heater – temperature 2 too high
B1581F2Electric interior heater, 12 V electronics – current too high

All 636 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.