Boxster S (986) F6-3.2L (2001)
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Despite the previously mentioned correction and adaptation methods, certain operating states exist for which deactivation of misfire detection is
necessary to avoid a misdetection.
In case of rough road detection, misfire detection must be deactivated. While driving on an extremely rough road surface, drivetrain vibrations can cause
engine speed variations, which would lead to improper misfire detection. Additionally, engine start leads to unsteady crankshaft revolutions at low rpm
that can be improperly diagnosed as a cylinder misfire. Therefore, misfire monitoring is enabled within 1 camshaft revolution after engine speed reaches
150 rpm below warmed up idle speed.
Diagnosis of Misfire - Overview
Diagnosis of Misfire Extended Adaptation
Diagnosis of Misfire (Luts Method)
Diagnosis of Misfire - Measure with Continuous Misfire