02 bad again

[jtfrog]

I replaced the 02 4 months ago and now code 43 says it is bad again Whats up please help. This is for a mid 90's Accord

[somick]

I am not sure but I believe Accord has two O2 sensors.

Sam

[jtfrog]

THay due and I only changed the one,shouls i now change the other,pricy

[Igovert500]

code 43 is a fuel supply system error code. Why on earth did you replace the 02 sensor in the first place?

From what I found, code 43 could be: Fuel supply system circuit OR fuel supply system...not sure which. I'd start checking out:

I'd replace the fuel filter if it has over 60k on it.
Then I'd
1. Check the fuel pressure
2. Check the fuel pressure regulator and all accompanying vaccum hoses for air leaks.
3. Fuel pump ( can you hear any noise from the fuel pump) it might not be getting enough voltage at low rpms. Hotwiring it would solve that specific issue.
3. Vacuum leaks


Also there is an an "IMPORTANT" thread titled 'service manuals' at the top of the accord forum. Check in there, and you can download your appropriate service manual, and see what instructions it gives you for diagnosing this problem.

[jtfrog]

thanks for help everyone

[StealthSonic]

Ok I did the batt reset thinggy and it didn't work. Engine checklight came back after 3mins or so.

I switch to another O2 sensor (used working) and did the batt reset and this time engine checklight comes on instantly.

Im thinking of buying a new O2 sensor again... But I doubt that will fix the problem. I'll try to bring to Honda shop this week. Will let you know.

I found a guy who had this problem from another forum. He said that you have to get the O2 sensor that is made for ULEV V-Tec. I'm not sure if this is true, because I got the O2 sensors from the dealer... I don't think they have ULEV version at all. But u could try. I'll run down to the dealer and see what they have to say.

[StealthSonic]

SORRY!! Wrong forum... Disreguard what I said. This is for the misc. error code 1167 (primary Oxygen sensor failure.)

[jtfrog]

Originally Posted by Igovert500

code 43 is a fuel supply system error code. Why on earth did you replace the 02 sensor in the first place?

From what I found, code 43 could be: Fuel supply system circuit OR fuel supply system...not sure which. I'd start checking out:

I'd replace the fuel filter if it has over 60k on it.
Then I'd
1. Check the fuel pressure
2. Check the fuel pressure regulator and all accompanying vaccum hoses for air leaks.
3. Fuel pump ( can you hear any noise from the fuel pump) it might not be getting enough voltage at low rpms. Hotwiring it would solve that specific issue.
3. Vacuum leaks


Also there is an an "IMPORTANT" thread titled 'service manuals' at the top of the accord forum. Check in there, and you can download your appropriate service manual, and see what instructions it gives you for diagnosing this problem.

I talked to the person and they say they are also having a brake problem. When at a stop sign the brakes creep to the floor but when at speed they work fine. Could this be a vacum leak or brake booster?

[redly1]

hahaha..mid 90's accord.
that made me laugh
wouldve been easier/more helpful to just state the year