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I've posted several thing on EGR on this forum because I need to get this damn thing working to get emission. I had a P0401 code two days ago (no check engine light, just shows on the scanner), I cleared the code, uploaded 93 octane tune and went out for 40 mile drive, came home to find new egr code (p0402) but when I checked the OBD monitors, EGR Monitors shows "OK" instead "INC" like it had most of the time. Anyone have any idea how this can happen when you have a EGR delete?
 
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