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Porsche
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2002
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911 Carrera 4S (996) F6-3.6L
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Repair and Diagnosis
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A L L Diagnostic Trouble Codes ( DTC )
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Testing and Inspection
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Manufacturer Code Charts
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Fault Code 28
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Alarm System Diagnosis I32 / 148
Alarm System Diagnosis I32 / 148
Fault code 28
Control unit faulty
Diagnostic conditions
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Vehicle locked and alarm system activated
Possible cause of fault
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Control module faulty
Affected terminals
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Diagnosis/troubleshooting