Recent content by Smwalker

  1. S

    Passed required smog but active trouble code shown: U0121

    If it is a permanent code no code reader can clear it. Is there a reason you need to clear it? Is your check engine light on? What State are you in?
  2. S

    Passed required smog but active trouble code shown: U0121

    Sounds like you might be talking about a "permanent code" If so you do not have to do anything about it. It is not an indication that anything is wrong with your car. Just that there was something wrong at one time. The ecu is waiting for similar conditions to test for that code and if it...
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