primary vs secondary o2 sensor

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07-22-2003, 01:29 AM

Loveless

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primary vs secondary o2 sensor

is it the same thing? can I swap them?

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07-22-2003, 03:43 AM

PM-Performance

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Re: primary vs secondary o2 sensor (Loveless)

i tihnk you can , but im not toally ure.

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07-22-2003, 05:35 AM

VTEC-DA

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Re: primary vs secondary o2 sensor (itr206)

Primary actually does all the work, all the secondary does is relay the signal to the ECU.

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07-22-2003, 05:48 AM

PM-Performance

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Re: primary vs secondary o2 sensor (VTEC-DA)

but are the sensors thme sleves the same? ill check when i get a chance, i have both my sensors out at the moment , ill check the part numbers, i tihnk the second only does that job becuase where its hooked into the ecu , i could be wronh though

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07-22-2003, 10:10 AM

AzG35

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Re: primary vs secondary o2 sensor (itr206)

I believe they are the same internally, but the wires on the secondary are longer.

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07-22-2003, 10:24 AM

MooreBoost

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Re: primary vs secondary o2 sensor (AzSi22)

You can switch them, but if you go to Acura to buy one they will ask you if you want the primary or secondary. The primary sends info to the ecu to help tune the a/f ratio. The secondary is purely for emissions.
gmoore