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Home >> Porsche >> 2003 >> 911 Carrera 4S, Standard >> Repair and Diagnosis >> Heating, Ventilation & A/C (HVAC) >> HVAC Control Systems >> Heater, Diagnosis - 911 CARRERA (996) >> System H02 Introduction - as of MY 2002 >> Possible causes of fault

Possible causes of fault

The possible fault causes that may be responsible for the fault are listed here. Please note that in certain circumstances further faults can be stored in the fault memory after troubleshooting (for example, if connectors are disconnected). After carrying out repairs, read out the fault memory of all control modules and erase any faults.