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2001 Civic emissions problems.

Old Dec 3, 2022
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2001 Civic emissions problems.

So, I previously purchased a 2001 Honda civic with a JDM D17A. The car had an immobilizer issue so I purchased and ECU that came from a Vtec civic with the matching key cylinder to get it running. I live in California so I have to pass an emissions scan to get the car registered, but the car with the vtec solenoid connected throws a code for no EGR valve. I'm wondering can I purchase a non-vtec ecu and use a VAFC to control the vtec solenoid so I can pass my emissions test? Thanks in advance.
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Old Dec 3, 2022
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Re: 2001 Civic emissions problems.

A non-VTEC ECU will simply disengage the VTEC. A CEL will appear but it should have no effect on emissions. Is a CEL an auto fail in California?
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Old Dec 3, 2022
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Re: 2001 Civic emissions problems.

Yes pretty much, and what CEL would come on? As long as I disconnect the vtec from the ECU then it should be okay? I just don't want to spend another 100$ to be having the same issue.

Thanks.
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Old Dec 3, 2022
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Re: 2001 Civic emissions problems.

Sorry, I messed up, using a non-vtec ECU should yield no check engine lights, but the EGR fault may persist. I'd look at getting that addressed however possible. I don't believe there's any correlation between the EGR and a vtec/non-vtec car. Admittedly, it seems they threw EGR's in whatever cars they wanted - I don't think there's even an explanation for that.
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Old Dec 3, 2022
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Re: 2001 Civic emissions problems.

Is there a way to discern a non-egr ecu from an egr ecu?
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Old Dec 3, 2022
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Re: 2001 Civic emissions problems.

That, I’m not sure about.
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Old Dec 3, 2022
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Re: 2001 Civic emissions problems.

03+ had egr
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Old Dec 5, 2022
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Re: 2001 Civic emissions problems.

My '02 also had EGR. I don't think we've ever been able to tell for sure.
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