98 hatch exhaust question
10-26-2005, 03:43 PM
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Join Date: Oct 2005
Location: Joliet, illinois, u.s.a.
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98 hatch exhaust question
I have a 1998 dx hatch and just put a header and highflow cat on and I am now getting a check engine light. The code is P0240: catalyst below threshold. i am using the stock dx o2 sensors. do i need to put 2dr ex sensors in it or is this an ecu problem. if anyone has had this problem any infor on how to fix it will be greatly appreciated. I do not want to take out the check engine light bulb because emmisions are required where i live. thanks
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