I recently purchased a 2008 Cayenne S. Yesterday the car took a while to start and had a very rough idle at approx. 400 rpm. The Check Engine light was on and when I read the codes I got:

Stored Codes:

P1372 Unknown Diagnostic Trouble Code

Pending Codes:

P1372 Unknown Diagnostic Trouble Code

P1353 Unknown Diagnostic Trouble Code

P1351 Unknown Diagnostic Trouble Code

P0174 System Too Lean Bank 2

The P0174 code is probably related to a bad O2 sensor. Does anyone know what the other "Unknown Diagnostic Trouble Code" are?



Thanks,

Terry Watson

 

Terry,

Spending about 3 minutes with Google turned up the answer for your first code..

http://forums.pelicanparts.com/porsc...ode-p1372.html

I'll let you do the work for the rest of them.. try "Porsche Cayenne P####" (whatever the P-code is..) All codes > 0999 are manufacturer specific. It's where a tool made to be used with a Porsche becomes valuable and you don't waste time dicking around on Google or some forum. There are several tools available, one for under $200 (iCarScan) - and I'd suggest if you're going to be doing DIY sort of stuff to your Cayenne - it's well worth the investment.