So hello guys,

Im still trying to work out the coolant heat in my car still no solution why it is going up and down all the time (180-220) but that´s another case......

I pulled up few codes from durametric and I was hoping that some of you could help me with those.

1. Instrument Cluster for Cayenne

Current Fault Codes
470:
CAN comfort in single-wire operation - Open circuit, test conditions are not-completed, fault is currently active and is not causing a DTC light

2. Air Conditioning

Current Fault Codes
1592:
Air quality sensor
Open circuit/short circuit to B+

3. Steering wheel electronics

Current Fault Codes
1752:
Heated steering wheel
Open circuit/short circuit to B+

4.Gateway K-line/CAN 2003-2004 Cayenne

Current Fault Codes
470:
CAN comfort in single-wire operation - Open circuit, test conditions are not-completed, fault is currently active and is not causing a DTC light

5.Doors and Rear Hatch

Current Fault Codes
470:
CAN comfort in single-wire operation - Open circuit, test conditions are not-completed, fault is currently active and is not causing a DTC light

6. Level Control

Current Fault Codes
1437:
Control position not learned
No/incorrect coding/calibration

So Any help is appreciated because here in Iceland there are not that many Porsche service centers/mechanics other than the dealer and that´s an EXPENSIVE JOKE just to think about it....

Have a great day all.

 

What year is your Cayenne? I bought a durametric and they said they were having problems with the software for the 2008 year Cayenne's. I hope they figure it out soon.

 

Can you watch the voltage drop across the temp sensor to rule that out? A temp sensor changes resistance when the temperature changes, so if you see the voltage drop changing, could be the temp sensor. If you dont see it changing but the gauge on the dash does, then one of the modules isnt handling the data right or gauge is bad.
As far as the codes you do have, looks like you have an open CAN wire on the comfort can. It uses two wires, a high signal and low, but it has a failsafe to run on one wire if need be.