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U178100 — High voltage battery, sensor for current measurement, signal implausible

High voltage battery, sensor for current measurement, signal implausible. The Taycan 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 U178100

Porsche Taycan

Battery Energy Control Module

How to read and clear U178100

  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 U178100 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 Battery Energy Control Module

U112300Data bus – fault value received
U113A00Charging device for high voltage battery, implausible message
U13E300CONCLUSION Identification, implausible
U140000Function restriction – supply voltage too low
U140100Function restriction – supply voltage too high
U178000Current/voltage sensor defective
U300000Relay for thermal management components (SR6.2) – short circuit to ground

All 198 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.