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ECU code doesn't exist

Discussion in 'ECU's, Electronics, and Tuning' started by neo25ny, Jan 13, 2009.

  1. neo25ny

    neo25ny New Member

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    Hopefully i posted in the correct section....I have a '91 crx si with a dual cam zc swap. I am using the PM7 ecu. It is throwing code 11 and i can't find a code 11 anywhere. The only mention i've seen is that it is a nonexistent code. It is not a faulty ecu either i have tried a few different ecu's and i get the same 11 error code.
    I have only found two somewhat related cases....one being someone having a rev limit issue at 3,000 rpm and another case i seen is someone said they shift into reverse and the engine light comes on and runs like crap. I am wondering if it is something to do with the transmission or wiring with the drivetrain.....i was thinking and i have trouble with mine sometimes my car will "chug" or "buck" at exactly 3,000 rpm's and i never could figure it out, i've replaced so many parts and checked and re-checked everything i can think of, and now that i see two other cases of drivetrain related issues i am thinking it may be a wiring issue or something? Anyone have any ideas what the code 11 is or how to fix the "chug" at 3,000 rpms?? Thanks in advance.
     
  2. AHHVTEC

    AHHVTEC Well-Known Member VIP

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    how are you counting the light. how many times does it blink
     
  3. neo25ny

    neo25ny New Member

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    code 11

    There is one long and one short flash, it is the only code thrown and it keeps repeating i have checked and rechecked many times to be sure i wasn't misreading it or something. I got so frustrated i parked the car until i could afford to do a build. This summer is the year i finally hope to get it done. I would really like to get it figured out before i start the build. I don't want any problems interfering when it comes time to tune ya know. thanks i appreciate the reply.
     
  4. AHHVTEC

    AHHVTEC Well-Known Member VIP

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    well man wish i could help but i dont know of a code 11 either, but if i think of anything i will post up
     
  5. George777

    George777 ^^ Likes Bewbies

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    Are you sure it's not a code 1 and a code 10?
     
  6. neo25ny

    neo25ny New Member

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    no i'm pretty positive it is 11.
     
  7. jlicrx

    jlicrx Senior Member

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    OBD0 D-series ECUs don't have long and short flashes - only short - sounds to me like code 1 for O2 sensor - European ECUs, like PM7, have a code 11 which is for the IMA sensor on cars not equipped with a cat and O2 sensor - they will flash 11 times - these are the codes for the UK cars:

    [​IMG]

    this is UK PM7 with IMA sensor:

    [​IMG]
     
    Last edited: Jan 14, 2009
  8. Fernpatch

    Fernpatch Member

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    Have you tried running the engine with a pm6 or a pg7? both will work for testing and are usdm ecu's so the diagnostics will hopefully give a valid code.
     
  9. neo25ny

    neo25ny New Member

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    What is that black plug or wire whip on the UK PM7, the IMA sensor? Mine doesn't have that.
    I have tried a PM6, the PM7 and also a PR4. So what exactly does this mean then, cause i am getting a definate 11 with a long flash then a short flash and i don't have that plug on the side of mine. Thanks for finding that jlicrx i been searching for a very long time and couldn't find anything on it or anyone that heard of code 11.
     
  10. jlicrx

    jlicrx Senior Member

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    once again - OBD0 D-series ECUs don't have long and short flashes - only short flashes - the number you count between pauses is the number of the code
     
  11. George777

    George777 ^^ Likes Bewbies

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    All the OBD0 D-series that I have owned have all had long and short flashes.
     
  12. jlicrx

    jlicrx Senior Member

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    if you have a car with a D-series OBD0 ECU (PM5, PM6, PM7, PM8, PG7, etc.), unplug the EACV and check the ECU - tell me how many times it flashes - you will find that it flashes 14 times
     
    Last edited: Jan 14, 2009
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