Author Topic: CEL again - 12 33 27 27 55  (Read 1548 times)

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Offline Jeffy

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CEL again - 12 33 27 27 55
« on: October 20, 2013, 08:35:06 PM »
For some reason I'm getting the CEL.  Checked it and it's 12, 33, 27, 27, 55.  I don't think I've ever seen them out of numerical order and appear twice.  27 is the code for fuel injectors not responding properly to the control signal
« Last Edit: October 21, 2013, 12:48:50 AM by Jeffy »
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Offline grumpygy

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Re: CEL again - 12 33 27 27 55
« Reply #1 on: October 21, 2013, 07:01:23 AM »
Could they be showing in the sequence they happened.
94 YJ, Cool Air intake, 19lb Inj, 4.0 Throttlebody with spacer,  31/10.50/15's

Offline Jeffy

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Re: CEL again - 12 33 27 27 55
« Reply #2 on: October 21, 2013, 02:48:32 PM »
Could they be showing in the sequence they happened.
That doesn't make sense since 33 will always come up.  The CEL lights up later meaning the 27 code is triggered.  And why does 27 come up twice?
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Offline neale_rs

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Re: CEL again - 12 33 27 27 55
« Reply #3 on: October 21, 2013, 02:50:48 PM »
Maybe a scanner would reveal which two injectors are not responding?
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Offline Jeffy

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Re: CEL again - 12 33 27 27 55
« Reply #4 on: October 21, 2013, 04:17:49 PM »
Maybe a scanner would reveal which two injectors are not responding?
I don't think it's that smart.  The FSM says 27 refers to a fault in banks 3 and/or 4 or 5 and/or 6.  I spend the day checking my ignition system and gaping plugs.  I probably should try resetting the PCM.  I plan on spraying contact cleaner on the plugs.  It only seems to come on when I'm on the highway and it's intermittent.
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Offline jfrabat

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Re: CEL again - 12 33 27 27 55
« Reply #5 on: October 22, 2013, 11:04:52 AM »
I read in the instructions of the new scanner that the codes appear in order of importance, so the first code should be the most critical to the system (if what I read is correct, anyway!).
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Offline Jeffy

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Re: CEL again - 12 33 27 27 55
« Reply #6 on: October 22, 2013, 12:10:10 PM »
I read in the instructions of the new scanner that the codes appear in order of importance, so the first code should be the most critical to the system (if what I read is correct, anyway!).
Okay, that makes sense.  Still wondering why it comes up twice.
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Offline sharpxmen

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Re: CEL again - 12 33 27 27 55
« Reply #7 on: October 22, 2013, 12:44:54 PM »
could it be last or active code related (as in the others went away but still stored, this was the last/more recent code - I cannot remember since last time i pulled a code if that's the case or not).
'95 YJ, NSG370 6spd / Hurst shifter, Dana 300 + 4:1 Doubler / tri-stick, Custom skid, Super D35 / Auburn LSD / 4.88, 35x12.5x15 BFG KM2, 64mm t/b, 1.7 RollerRockers, MkVIII e-fan, Dual Diaph Booster
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