Chosen Solution
no check engine no codes car runs fine but i need my tags to drive the car but egr monitor never get ready i try many thing even took the car to puente hill subaru and they toll me just drive the car they charge me and they do nothing for me help what can i do drive cycle done replace egr valve done clean egr passages done egr vacuum solenoid done knock senor replace catalytic replace done air fuel sensor replace done disconnect ecm reconnect repeat drive cycle done 2000 miles drove nothing work
The egr tube and /or the egr port in the throttle body may be clogged with soot.
I would take it to a Subaru performance shop or someone who does ECU tuning. They will be able to program the ECU to run and pass the EGR instantly. Down side probably cost like 400 to 600 bucks. But for that might as well have them tune it so you won’t get a P0420 for a bad cat in the future.
