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P1D4900 — Speed sensor, transmission (output) – signal implausible

Speed sensor, transmission (output) – 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 P1D4900

Porsche Taycan

Engine Control Module 1

How to read and clear P1D4900

  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 P1D4900 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 →

Download STEUER14 — free fault reading

Other codes of the Engine Control Module 1

P1D4300Shift monitoring, multi-plate clutch timeout when closing
P1D4400Shift monitoring, parking lock – timeout while engaging
P1D4500Shift monitoring, dog clutch, timeout during opening
P1D4600Shift monitoring, multi-plate clutch timeout when opening
P1D4700Shift monitoring, disengage parking lock – timeout during disengagement
P1D4800Gear shift monitoring, gear wheel set – blocked during upshifting
P1D4A00Transmission oil pump – speed deviation
P1D4B00Position sensor for dog clutch - actual position implausible, with clutch engaged
P1D4C00Position sensor for dog clutch – actual position implausible, with clutch disengaged
P1D4D00Position sensor for multi-plate clutch 2nd gear – actual position implausible with clutch engaged
P1D4E00Position sensor for multi-plate clutch 2nd gear – actual position implausible with clutch disengaged
P1D4F00Electric motor speed control – deviation during downshifting

All 274 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.