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code 43 and 41 ecu p28 d16z6 please help me

Old 12-01-2004, 06:29 PM
  #1  
0.5 BAR
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Default code 43 and 41 ecu p28 d16z6 please help me

i have a 450 cc dsm and a hack vafc in my management 7psi boost but the ecu show the code 43 fuel system suply.. what this means? somebody help me. what can i do o start to check. i feel my car doesnt run good after vtec engage at 5,500 rpm when needs more gas i think, im i wrong? please any help will be apreciate.
and the code 41, what can i do with this one too.
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Old 12-02-2004, 06:50 AM
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Default Re:code 43 and 41 ecu p28 d16z6 please help me

41 is your primary o2 sensor heater and 43 is your fuel supply system obviously. they're both related to eachother, fix your o2 sensor and 43 should go away also, if it doesn't, the other things that relate are:

fuel pump
fuel filter
fuel feed line
fuel pressure regulator
fuel injectors


more than likely if you fix your o2 sensor, 43 will go away also. do you have an a/f gauge? maybe you forgot to feed the signal back in to the ecu just a shot in the dark.
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Old 12-02-2004, 10:14 AM
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Default Re:code 43 and 41 ecu p28 d16z6 please help me

thanks a lot, i will check all those things, i will tell you later.
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