Two problems related to check engine light on have been reported for the 2004 Porsche Cayenne. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2004 Porsche Cayenne based on all problems reported for the 2004 Cayenne.
While driving with both of my children in the rain my entire car locked and my windshield wipes stopped my windows wouldn't roll down and my doors locked on and off my alarm system started to go off uncontrollably even while driving Porsche isn't being of any help giving me run arounds also my check engine light came on in the process of the incident.
While driving check engine light on and vehicle lack power. Drove to independent repair service, replaced 8 ignition coils and 8 spark plugs to correct problem. All ignition coils cracked.