CEL code 43 new engine

[cb7rush]

it says fuel system supply..what is it..
i just put in a new f22a1 and did not have this problem before..
is it the injectors or something else..
i used the same fuel rail and intake manifold...
same stock injectors too.LMK what it is so i can finally have my car back to normal..
thanks in advance..

[deevergote]

Code 43 is very often the oxygen sensor. Replace it with Denso or NGK/NTK. Don't use a Bosch sensor.

[starchland]

or run a a good fuel system cleaner as well. hard to diagnose this one.

[cb7rush]

or run a a good fuel system cleaner as well. hard to diagnose this one.

thats what i thought..im gona run a new oxygen sensor and clen the fuel system with one of those cleaners and il c what happens..thanks

[deevergote]

That should be all you need. Post again if it works so we know... or post again if it doesn't, so we can dig deeper!

[cb7rush]

That should be all you need. Post again if it works so we know... or post again if it doesn't, so we can dig deeper!

no problem...i get paid tommorow so the oxygen sensor will have to wait til tommorow, but the fuel system cleaner goes in today.

[starchland]

I would run the fuel system cleaner for most of a tank on decent gas, let it do its thing. This worked for me. I dunno if it was a conincidence. but try that first before replacing an o2 sensor prematurely. also check the o2 sensor circuitry and make sure all the connections are clean.

[deevergote]

Very true. The effects of the fuel system cleaner will still be beneficial even if you have to replace the o2 sensor, so you won't be wasting any time or money doing that first... and if it fixes the problem, then you save yourself the cost of a new o2 sensor. For now, at least. It's still something that should be replaced, especially if it's the original sensor.

[cb7rush]

Very true. The effects of the fuel system cleaner will still be beneficial even if you have to replace the o2 sensor, so you won't be wasting any time or money doing that first... and if it fixes the problem, then you save yourself the cost of a new o2 sensor. For now, at least. It's still something that should be replaced, especially if it's the original sensor.

I am still going to run the fuel sustem cleaner to see if that helps and I am also going to replace the o2 sensor..it is the original one and has survived two blown engines..just swapped in a new used f22..so this needs to be replaced

[deevergote]

Yeah, if those old engines were burning anything other than fuel, that sensor is very likely shot.

[cb7rush]

Yeah, if those old engines were burning anything other than fuel, that sensor is very likely shot.

thats what i was thinking..i went to autozone today to try to find the NGK sensor for my car but no luck..only bosch..whats a good place to find it that doesnt require shipping?

[deevergote]

The Honda dealer for sure, but they'll probably charge you $150 or more for it... The only places I know of with reasonable prices require shipping. I believe Summit has a good deal on one of the necessary brands.

[cb7rush]

The Honda dealer for sure, but they'll probably charge you $150 or more for it... The only places I know of with reasonable prices require shipping. I believe Summit has a good deal on one of the necessary brands.

i know honda dealers are probably going to charge an arm and both legs for it so online it is..im on tas auto right now and I saw that there is a difference between lx/dx and ex/se..does it change because of the location of the o2 sensor or the engine..im running an f22a1 in an ex..my header and downpipe are stock f22a6..does it change?

[deevergote]

If you're running the F22A6 header and downpipe, then use the F22A6 sensor. You're right, it's the location of the sensor that's different. I'm pretty sure the wire length is different as well, so it's a good thing that you're running the header and downpipe from the A6.

[cb7rush]

If you're running the F22A6 header and downpipe, then use the F22A6 sensor. You're right, it's the location of the sensor that's different. I'm pretty sure the wire length is different as well, so it's a good thing that you're running the header and downpipe from the A6.

i figured they were because the lady at autozone asked me like a million questions (and still couldnt find it)..what brand of o2 sensor is the best from summit reacing..im on their website right now and they have over 2000 types..any specific brand work better with cb's than others? was looking for NGK but still have not found it..i am also searching the forum trying to find differences with each company..

is this denso one a good price?
denso oxygen sensor