Code 43 help.
My car is pretty well maintain. It's a 92 Accord EX Sedan. I have been having bad gas mileage recently and can't figure the problem. A couple days ago the CEL went on. Checked it when I got home, 4 long blinks and 3 short ones. Code 43 for "Fuel supply system." I cleared the code to see if it comes back on, after i start the car and take it for a spin, the CEL turns on. I recently gave it a tune up like 3 weeks ago...i changed the O2 sensor and notice a big difference, but then afer a couple days i saw the same problem with my gas mileage, i had earlier changed the catalytic converter. A couple days earlier i went to smog my car they told me it was burning rich...i dont know what the problem maybe. fuel regulator, O2 sensor, catalytic converter is all i can think of...any ideas??
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Code 43 is due to a failed o2 sensor 90% of the time. Running rich is another sign of a bad o2 sensor. What brand o2 sensor did you use? If it is anything but NTK/NGK or Denso, it may not work. Bosch sensors are especially known for not working in our cars.
Recently, one member fixed a Code 43 by replacing the fuel pressure regulator.
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Dont trust bosch for O2 sensors10th Anniversary Accord.
05 Audi A4 Ultra Sport 6MT.Comment
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Thanks. I must not have been clear when I said that in my first post.Originally posted by 10thAnnivCB7 View Post
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I guess he didn't get back yet means he did used a Bosch. Lol.Comment
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How soon is the CEL coming on? If it's immediately, it may be a bad computer (speaking from experience) I read in a manual that before the o2 sensor sends a signal to the ecu, it has to reach some crazy temp.
In my case, my CEL would come on within 10 seconds of starting my car, it was a code 43, I bought 2 different o2 sensors at a cost of almost 80 dollars a piece, come to find out, it was the ecu. Put a different pt3 in my car, no more problems.Comment
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Haven't bought the sensors you mention. Hanks for all the help.
@nice deuce, it starts like 10secs after a few blocks I ride.Comment
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