Cayman (987) F6-2.9L (2009)
The monitor runs immediately after a shift to large valve lift for approximately 3 sec. This strategy enables the diagnosis to also detect a slow shifting
cylinder bank.
The diagnosis is disabled at:
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power stage error of solenoid valves
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oil temperature > threshold
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during catalyst heating +
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lambda control not active
Diagnosis via deviation of camshaft speed fluctuation
If both solenoid valves have a malfunction the diagnosis is performed according to the following scheme: