Hi, Im Pete. Im new to dodge forum but hoping for helpful suggestions. i have a 2003 Dodge Quad 4.7 4x4. Ive owned it since 28k miles, now at 180k. Runs great but need inspection. P0340 code showing, replaced cam sensor Mondat, code goes away Tuesday, 2 codes pop up Thurs. night. Fri. 2:30 is inspection. aaargh! now P0420 and P0340 showing. Truck is stock except for K&N Cold Air Intake. Sensor for intake tucked into wiring harness, hole plugged. this install 1 yr ago. Could this be affecting codes after 1 yr of no problems?

 

make need to re program if running too lean before of more air flow. Could be throwing computer off.