I've not pulled one out on a Honda, but the light grey on plugs indicates proper fuel mixture. (As long as the engine has been warmed-up and running a while)

In the 'old days' before catalytic converters, that light grey is what you wanted the for inside of the tailpipe.

 

Ok thank something is causing my check engine light to turn on the code is p2A00 it was code p0420 before I put both new oxygen sensors in so I Don't know what is going on with it.

 

Googled that code, sounds as if the sensor you installed B4 the cat/con isn't the correct type.

When the PCM sets the P2A00 code, it is telling you that the readings given off from Sensor 1 are outside of the normal manufacturer-specified parameters. any deviation that is greater or less than 10% of the proper value will cause the PCM to trigger the code. ​

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https://www.kbb.com/obd-ii/p2a00/

 

Ok I bought the upstream oxygen sensor at the parts store and I don't think it is under warranty anymore.

Ok I bought the upstream oxygen sensor at the parts store and I don't think it is under warranty anymore.

And sometimes the check engine light turns off on its own that's what is puzzling to me.

And sometimes the check engine light turns off on its own that's what is puzzling to me.And it doesn't effect the fuel mileage or engine power at all.

 

Sounds as if yours isn't a proper wide-band sensor. Buy a Denso or NGK (NTK) as everyone recommends.

 

I just went and looked at the box and it isn't a Denso or NGK brand.

 

And sometimes the check engine light turns off on its own that's what is puzzling to me.

Many emissions readiness checks on Hondas use a 2 cycle system. If a check fails two consecutive drive cycles, it’ll turn on the light. If it passes two consecutive drive cycles, it will turn off the light. For example, the p0420 is almost always a failing cat. It can be borderline pass/fail for a long time.

I know someone with a Pilot. Her 0420 has been going on and off for over 4 years now. When her smog check comes due, she immediately drives her car to get the inspection when the light turns off because she knows it won’t come back on until after 2 drive cycles … which will be after the inspection. She says that the only problem with that tactic is that she knows someday the cat will permanently die … and cat prices keep rising every year so the longer she puts it off, the more expensive it gets.

 

Many emissions readiness checks on Hondas use a 2 cycle system. If a check fails two consecutive drive cycles, it’ll turn on the light. If it passes two consecutive drive cycles, it will turn off the light. For example, the p0420 is almost always a failing cat. It can be borderline pass/fail for a long time.

I know someone with a Pilot. Her 0420 has been going on and off for over 4 years now. When her smog check comes due, she immediately drives her car to get the inspection when the light turns off because she knows it won’t come back on until after 2 drive cycles … which will be after the inspection. She says that the only problem with that tactic is that she knows someday the cat will permanently die … and cat prices keep rising every year so the longer she puts it off, the more expensive it gets.

It's not giving that code now it is giving the code p2A00 now that's what is puzzling to me.