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CEL code 21 help!

Discussion in 'HYBRID -> BA-BB /CA-CD' started by slpycd7, Jul 21, 2004.

  1. slpycd7

    slpycd7 Junior Member

    Likes Received:
    Jul 19, 2004
    before I go into crazy details and people asking me what i've got, here is some info..

    1994 Accord Coupe
    1995 JDM h22a
    1994 USDM H23 tranny
    JDM p13 ecu
    Apexi VAFC

    and other small mods.

    neways this the first time happening to my knowledge... I'm getting CEL code 21 which is VTEC solenoid. with this code I'm getting a 6500 redline instead of the regular 7800 or so.

    This only happens during mid afternoon when it gets crazy 100+ degrees outside, it doesn't happen in the morning after I've ran it till operating temperatures and gone passed the 6500 rpm revlimit. So what do you guys think? Should I replace my vtec solenoid or try some other wacky method
  2. tab

    tab Super Moderator

    Likes Received:
    Jan 10, 2003
    Aberdeen, Washington State
    I think other people have mentioned taking it off and cleaning underneath. There is a screen of some sort. Haven't actually done it to mine.

    Check your oil level. Low oil pressure will keep VTEC from engaging.

    If that doesn't work, test the solenoid. Also, double check your wiring.
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