chamilka

Hi gang
Does anyone know if Durametric tool can be used to detect voltage values in O2 sensors in Porsche cayenne S (2004).
I have been getting following error :

P0431:Catalyst System Efficiency Below Threshold Bank 2.

I am using the latest software version-6 but can to see any options for O2 sensor readouts.
Would be nice to be able to read the output values of the O2 sensor through the diagnostic tool to determine of the sensor is bad. Hopefully I don’t have to replace the Catalyst convertor.

Thank you
Chamilka

deilenberger

Just off the top of my head (I'm not going to the garage to hook mine up..) but doesn't the Durametic allow plotting the O2 sensor outputs? If so - the primary sensors should be switching almost full scale every second or so. The secondary sensors have a continuous voltage output since they shouldn't see an mixture changes post catalytic..

hahnmgh63

Catalyst efficiency is a reading triggered by the Rear O2 sensor. Other than reading faults I think you can only read the front O2's for Voltage outputs.