I recently prepped the motor for the ref smog test. The car passed emission and function but failed the visual because I was not running the Prelude EGR vacuum lines and solenoids. The accord vacuum lines and solenoids worked fine but were not the appropriate ones. I swapped over the H22a egr vacuum system and solenoids and the ECU threw code 12. I replaced the EGR valve and still same issue. I swapped back the accord egr system and still no solution. I decided to pull the egr ports and clean then out. Ran the car this morning and the code 12 popped back up. All the vacuum lines are set up correctly, the wiring to the purge and egr solenoid are done correctly as well. Im stumped on what the problem is. Any help is highly appreciated.


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