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Thread: Fault code 27

  1. #1
    Garrett booster
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    Fault code 27

    I have been trying to figure this out for about a week now.My chrysler laser was not starting so i did the key dance thing and got codes 11,24,26,27,34,54,55 then i would wipe the codes and get a different set of codes when i would try to restart it.I got all them figured out but code 27,i have change out the injector wiring & the PM and tested the injector connection & tested the wires for the injectors on the LM and got a reading of 5.03 on both of them but when i tested the injector connection i got no reading.I changed out the fuel filter too,i dunno what else i can check or what it is.Maybe bad injectors or Lm or a break in the wiring somewhere ?

  2. #2
    Garrett booster
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    Re: Fault code 27

    Ok i rented the OEM 8 pcs. noid light set,tested the first one and second one ( injectors for cylinder 1&2) and got pulses from them.I then tested 3&4 and got nothing,no pulse,light or anything from them.I already replaced the PM.

  3. #3
    Moderator Turbo Mopar Staff Force Fed Mopar's Avatar
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    Re: Fault code 27

    Bad LM or the terminals for those wires in the LM plugs is broken/pushed out/weak.
    Rob M.
    '89 Turbo GTC

    2.5 TIII stroker, 568 w/ OBX and 3.77 FD

  4. #4
    Supporting Member Turbo Mopar Contributor 2.216VTurbo's Avatar
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    Re: Fault code 27

    On three different cars I've had 'nonsense' codes, too many, out of order etc. For each car it's been a grounding issue, on RedBox it was a complete failure(wire break?) of the J5 'signal' ground to the SMEC. something you might check for...

    AJ (no More Alan) 84 Rampage RT TIII/568 Quaife 87 GLHS dealer optioned Red 16V Masi/568/Quaife
    90 Masi 16V White/Ginger/Black
    89 TC Masi 16V Red/Ginger/Black
    86 GLHS #110 RoadRace Built 89 CSX-VNT Recaro Car
    89 Turbo Mini 'Woody' 85 GLHT 'RedBox'
    2014 Explorer DD'r 3.5Twin Turbo Ecoboost AWD and 500HP
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  5. #5
    Garrett booster
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    Re: Fault code 27

    I was taking a closer look at the PM connector and noticed that the wires coming out of the connector were exposed and the tan one that runs to the injectors 3/4 looks broke.I would post a pic but photo bucket is not posting pic`s right anymore,is there a way to fix the wiring coming out of the connector ?

  6. #6
    Garrett booster
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    Re: Fault code 27

    I took the connector and where the tan wire went i drilled thru it enough to fit the tan wire thru,stripped the coating off and pushed it around the brass fitting in the Pm connector,turned the key and it fired right up,so now i guess im looking for a Pm 10 pin connector.

  7. #7
    Garrett booster
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    Re: Fault code 27

    thank you all that replied to give me a idea of where & what to look for.

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