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B16 swap throwing a CEL 21

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Old 03-13-2013, 08:12 AM
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Icon2 B16 swap throwing a CEL 21

OBD1 B16 into a 97 dx coupe P28 ECU, starts and runs fine but throwing a CEL 21 (Vtec spool valve) could this be a wiring issue within the swap.
scratching my head with this one :$
Old 03-13-2013, 10:05 AM
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Default Re: B16 swap throwing a CEL 21

Also I ran the car on idleof and on for about 3 hours before this CEL 21 came on and cant take it in for an Emissions test until I am "CEL free" FML
Old 03-13-2013, 10:07 AM
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Default Re: B16 swap throwing a CEL 21

could be wiring. check it. from sensor to ecu pin.
also try another vtec selonoid(whole) or at least take yours off and clean it.
Old 03-13-2013, 10:14 AM
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Default Re: B16 swap throwing a CEL 21

What is the condition of your conversion harness? I had a VTEC CEL during my swap because my old conversion harness had some pins missing.
Old 03-13-2013, 11:07 AM
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Default Re: B16 swap throwing a CEL 21

https://honda-tech.com/forums/hybrid-engine-swaps-18/%5Bfaq%5D-%22my-vtec-doesnt-work%22-1812135/
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