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911 GT3, Automatic DCT Trans
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Repair and Diagnosis
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Quick Lookups
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DTC Index -- 911
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DTC P1550: Control Unit Function Monitoring
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Diagnostic conditions
Diagnostic conditions
Ignition on > 10 second(s)
then idling > 30 second(s)
then engine speed > 1, 000 rpm > 60 seconds with:
Vehicle standstill