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  • Check engine code

    Does anybody know what code 18 means? Or can direct me to a code chart? Thanks! Btw it’s a 91 festiva.

  • #2
    The manual does not show a code 18 For a 91 EFI. Code 17 is for the oxygen sensor.


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    "Fred" 93 Festiva L B6-ME Swap
    “Though he is small, he is but fierce.”

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    • #3
      I get a long flash then 8 quick ones

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      • #4
        That code warns you the check engine light is malfunctioning.
        Original owner of silver grey carburetted 1989 Festiva. 105k km as of June 2006. 140k km as of June 2021.

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        • #5
          Possibly, that is a code 1 and a code 8 ? I have no idea what a 1 would be, but an 8 is for the VAF. It should be something like 1.5 seconds between flashes for the second part of the same code, and about 4 seconds between flashes for the next code - for a MECS system. Hope this helps.
          186,000 miles per second is not just a good idea, it's the law

          1990 yellow L+ (l8ly)
          1990 yellow L+ (sunryz)
          1992 aqua L (agua)
          1993 blue L (aurora)

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