I have a 94 pathfinder with 180,000 miles. The check engine light has been on for a few months, but it runs fine. Now that I need a smog check in order to register, I had it looked into. The mechanic says I need to replace the camshaft position sensor as well as the oxygen sensor. They want to charge me $1000.
Based on helpful suggestions I received in this forum, I checked the codes myself and came back with error codes for 32) EGR Function and 34) Knock Sensor.
Can you tell me a little about those? Where they're located, and are they easy to change? Is EGR function the EGR sensor, or does it encompass much more?
Any help will be appreciated.