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Engine missing
I'm having a problem with my 2009 Cayenne GTS. I have some minor engine "missing" problems that just started happening, and I'd like to fix it before it gets worse. I have a Durametric device, and when I hooked it up, I got a lot of codes, but the ones that seemed pertinent were 1094 (air mass ahead of throttle valve, implausible, Value below lower limit value; 0174 System too lean bank 2 upper limit value exceeded, and 0171 System too lean bank 1 upper limit value exceeded. Any ideas on where to start before I go in and really screw things up?
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