i'll try again P1612 dtc

[yournottherock]

Exact year+model of your car, in some instances, even the info if its an early production or late production of a certain model year can help. 2002 I35with sport package-Milage on car, if milage on system experiencing problems is different ,post that as well (example: milage of car, 90k, transmission 5k) 75,000 MILES (118 k) -On hi mile engine diagnostics you should also include info about some key components, like injectors, oxygen sensors, anti knock sensors, MAF, oil pump, thermostat etc etc and whether they are original or not, and if not original ,when replaced and with OEM or not. The inspection service didn't identify any replacement parts

-Also tell us about your location ,so we can relate problems that may be temp/humidity related. Toronto...very cold -Also be sure to post ANY recent repair and service done to your vehicle, as it may be related (Example: In some cars, improperly done oil filter changes, can cause MAF connector problems, which can result in a whole plethora of serious symptoms) I'm not sure if the car was in an accident. The official gov't document says no, but the rear passenger door was repainted. Dealer says probably a key scratch. The inspection service said the vehicle had been towed at some point because of chain marks on the frame. Dealer swears Accident Free!