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H22a Code 12

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    #1

    H22a Code 12

    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.
    Tags: None
    #2
    Test the wiring to make sure it's not damaged, and consider replacing the valve again. It's not uncommon for parts to be faulty right out of the box. Especially since these cars are getting older, and true OEM quality parts aren't necessarily available.






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      #3
      I've also seen the EGR lift sensor (the electrical part that is usually in the 'black box') cause the code 12.

      On a side note, why did the ref require that you change the parts? I have the Accord EGR parts on my swap and the referee just asked me to open the black to make sure the parts were there.'
      Originally posted by Junior Smurff
      Nevermind guys, google search works wonders!

      I don't have road rage, my car just goes faster than yours!

      Accords are for winners. And Grandmothers. But mostly winners.

      I have grown so Tired of Internet Illiteracy. Please learn proper spelling and grammar. For your sake and that of your children.

      Comment

        #4
        Originally posted by 4GAccordH22 View Post
        I've also seen the EGR lift sensor (the electrical part that is usually in the 'black box') cause the code 12.

        On a side note, why did the ref require that you change the parts? I have the Accord EGR parts on my swap and the referee just asked me to open the black to make sure the parts were there.'
        The accord egr system worked perfectly fine. The ref was going off the prelude egr vacuum diagram. I told him that the same components were located inside the black box but he insisted that they were to be placed on the engine bay the same way as if it was the prelude enigine bay. He wanted the purge valve behind the intake manifold and the egr assy. solenoid nest to the right mount. Exactly how the prelude is set up. I got the prelude egr system from the junkyard so I have a feeling that the solenoid might be bad. I am going to switch the accord egr solenoid and see what it does. I tested the egr valve lift today and it works fine. Pulled vacuum directly of the valve lift hose and it shut the engine off.

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          #5
          Originally posted by deevergote View Post
          Test the wiring to make sure it's not damaged, and consider replacing the valve again. It's not uncommon for parts to be faulty right out of the box. Especially since these cars are getting older, and true OEM quality parts aren't necessarily available.
          I looked up the prices for new sensors but they are out of range for what i want to spend on them. Im going to try another junkyard but these prelude models are hard to come by at the yard, hardly see any of them.

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