Throw CEL Code 43 fuel supply system?

[Josh26]

Well one day i was just cruzin down the highway and all the sudden my check engine light turns on and pull over and get out my paper clip and read the blinks and it blinked 4 slow times and 3 fast so thats code 43..Which is fuel supply system? what in the heck is that? and what is the problem?

thanks

josh

[jDmacCordh22a]

x2 bump for that, I had this problem once too!!!

[xtremecb7]

Bumpppp I Had This Code Before I Started To Turbo It I Changed My Injectors To 550CC'S I Installed A Walbro 255 Hp Fuel Pump I Installed A Aem Fuel Rail And Fuel Pressure Regulator So I Hope I Solved The Problem. I Guess Ill Have To Find Out When The Time Comes To Start It Again. But My Old Injectors Were Mismatched I Had 3 Alike And One Different So If Anyone Can Shed Some Light To This Problem It Would Be More Than Helpful

[Mr_Doitagain]

Josh26

I dont think u have to go all out like your boy xtremecb7.... Get a volt meter and test ur line to ur fuel pump... That would be one of ther first things I would look at. Also look and see if its just a fuse that went bad... then u can start lookning into fuel pump and injector issues...

[shadetreecustom]

had the same problem on a f22dohc.....ended up being the o2 had a wire crossed.....fixed it no more MIL......

[camdizawg]

Well one day i was just cruzin down the highway and all the sudden my check engine light turns on and pull over and get out my paper clip and read the blinks and it blinked 4 slow times and 3 fast so thats code 43..Which is fuel supply system? what in the heck is that? and what is the problem?

thanks

josh

whenever i had this problem it was ALWAYS my o2 sensor, its part of the fuel system cuz it tells your injectors how much gas to give

[mozzandherb]

whenever i had this problem it was ALWAYS my o2 sensor, its part of the fuel system cuz it tells your injectors how much gas to give

x2 on the O2 sensor. I've had this CEL before and after I boosted the car, I also changed everything fuel system related, pump, filter, injectors ect...and the CEL continued, so then my tuner disactivaed the O2 sensor and the code went away.

[YellowCord]

o2 sensor.

[alb_accord]

i changed my 02 sensor and the cell comes on from time to time. <<<< it somes on mostly only when i come out of the high way.

[ACCORDing2R]

Yesterday I was driving and my car threw a code 30 - Automatic Tranny Signal A

My car is a Auto to 5 speed conversion and I've had it this way for years. Maybe it's still confused what it actually is.