1997 Porsche Boxster AutomaticFACTORY OEM SERVICE PROCEDURE

Load Calculation - Signal implausible: Function

A load signal is generated to determine the engine load. This signal is calculated from the intake air mass (signal from the mass air flow sensor) and the engine speed. This load signal is corrected by the intake air temperature and a taught altitude factor for the purpose of adaption to the air density.

Factory Service Tools

Use the Manual With the Right Hardware

Pair factory procedures with proven DIY tools so the instructions are easier to execute.

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • β€’ You smell fuel, burning insulation, or see smoke.
  • β€’ Brakes feel soft, pull hard to one side, or make grinding noises.
  • β€’ The engine overheats, stalls repeatedly, or misfires under load.
  • β€’ You are missing required tools, torque specs, or safe lifting equipment.
  • β€’ You are not confident in the next step or safety outcome.