I have a P0505 Code. What's the best stratagy to trouble shoot? 97K miles, is oil build up in throttle body a cause? O2 sensors haven't been replace since I bought the car at 70K miles, can they cause this problem too?
Joe S.
I think you mean DTC 0505... which means that no errors have been detected or reported to the ECU. So keep driving ;)
Cheers, Nirav
Actually I take that back. If you do have an P0505 (which you said you do, sorry), then thats DTC 0205 - which is the Idle speed code.
You could try to pull and clean out the IACV - the plunger sometimes gets stuck with all that grime build up.
Nirav
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