2001 Accent-P1128 error code

Discussion in 'Hyundai Accent' started by Plague Boy, Apr 10, 2008.

  1. Plague Boy

    Plague Boy Guest

    Well, all the old posts seem to be mismatched. Anyhow, I'm about
    to wash my hands of this car, not my problem. Brief recap-

    Car was neglected until the check engine light came on and it
    became almost undrivable in Dec 07.

    I changed the plugs and wires, cleaned the MAF and changed the
    oil. Car drove OK, check engine light came on after several days
    with error about the converter.

    Car was driven down to Fl and back without difficulty, and since

    Owner is now finding he cannot get NYS inspection because CEL is on.

    Error was "misfire" on cyl 1 and 4. I notice these are on the
    same coil.

    Error is now stated "P1128" and something about Fuel Air
    metering and lean condition under partial load.

    Error previously was something to do with the MAF along with the

    Sorry about the vagueness, I'm getting this from the owner and
    it's rather garbled. My preference would be that he take it
    somewhere and stop bothering me. I promised I would ask and see
    if anybody could point me in the right direction ("That's a bad
    MAF, 99% sure!") as a last ditch effort.

    I thank you all for your time and for any advice.
    Plague Boy, Apr 10, 2008
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  2. Plague Boy

    hyundaitech Guest

    The number one cause for this code is the mass air flow sensor, but anothe
    common problem I've seen is a hole sucked into the PCV hose. That, too
    can cause a lean code.

    Combined with a P0301 (or any other misfire code), however, suggests tha
    there could also be a low fuel pressure issue
    hyundaitech, Apr 10, 2008
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