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U042600 — Immobilizer, implausible signal
Immobilizer, implausible signal. 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 U042600
How to read and clear U042600
- 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 U042600 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 Drive Motor Control Module
| U029200 | Front-axle high-voltage power electronics control unit - no communication |
| U040100 | Engine electronics (DME) control unit – signal implausible |
| U041100 | High-voltage power electronics control unit – signal implausible |
| U041300 | High-voltage battery control unit, signal implausible |
| U041500 | Control unit for brake electronics (PSM) – signal implausible |
| U041800 | Control unit for brake electronics (PSM) – signal implausible |
| U042B00 | Control unit for chassis control (PASM) – signal implausible |
| U043100 | Data bus - fault value received |
| U044300 | Data bus - fault value received |
| U044700 | Gateway control unit – signal implausible |
| U045200 | Airbag control unit - signal implausible |
| U045600 | Thermal management control unit - signal implausible |
All 143 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.