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Forum namePerformance/Engine
Topic subjectAnyone had to deal with CEL 121, or CEL 455
Topic URLhttps://forums.2gnt.com/dcboard.php?az=show_topic&forum=i5&topic_id=60739
60739, Anyone had to deal with CEL 121, or CEL 455
Posted by Therein10, Oct-05-03 11:25 AM
I have CEL 121 and 455 and the ohms on the tps sensor seem
fine. Anyone had to deal with either that may have some
ideas?:shrug 
60740, RE: Anyone had to deal with CEL 121, or CEL 455
Posted by tim97rs, Oct-05-03 11:28 AM
do you mean CEl 12, 14, 55?

12 = battery disconnect in last 50 key cycles. = normal
14 = MAP sensor voltage to high/to low. = not normal
55 = End of codes. = normal

are you boosted? if so do you have the missing link?
60755, RE: Anyone had to deal with CEL 121, or CEL 455
Posted by Therein10, Oct-05-03 03:49 PM
Well its a 96 and the Check Engine light read 1 2 1 4 5 5 and
I guess maybe I was wrong? I just looked in my Chilton under
the diagnostic trouble code and for OBDII it started with 100.
Is DTC not the same as CEL?

If it is 12 14 55, then has anyone delt with 14?
60756, RE: Anyone had to deal with CEL 121, or CEL 455
Posted by MmmDeion, Oct-05-03 04:30 PM
>Is DTC not the same as CEL?If it is 12 14 55, then has
anyone delt >with 14?

No... Select DSM models have the keydance where u can get the
PCM codes by the CEL light...  Like said above, 12 and 55 are
normal, nothing to worry about...  14 would be your MAP
(Manifold Absolute Pressure) Sensor...  Do you have a turbo
car?  If so, did you install a missing link, or add a black
box?  If not then u prob. have a fault sensor... Check it
out... Itll be on the very top of your intake manifold, on the
left hand side...  Cant miss it, check to see if the harness
is plugged in...  Get back to us, were here to help...
:thumbsup 
60759, RE: Anyone had to deal with CEL 121, or CEL 455
Posted by Therein10, Oct-05-03 04:49 PM
I have a fuel cut defencer and everything was working fine,
its fully built and i had it tuned at 24lbs of boost and then
one day i floored it and it fell on its face and thats where
it has been for the last month. I tried replacing the map
sensor but it was from a junkyard. Could the sensor still be
bad? Is the fuel cut defencer bad? Or do you think the wiring
is bad?
60765, RE: Anyone had to deal with CEL 121, or CEL 455
Posted by MmmDeion, Oct-05-03 06:11 PM
I think the fuel cut defender is fine dude... Mines been
through hell and back and it works... I would def double check
that sensor though... Even though its not like ull be able to
see if its broken or not, I would try and get a new one... 
Shouldnt run ya for more than $100 at Autozon (could be even
less)...  I think thats all the advice I could give...  
:thumbsup 
60774, RE: Anyone had to deal with CEL 121, or CEL 455
Posted by Therein10, Oct-05-03 08:20 PM
Thanks for the help I'll check it out. Out of curiosity where
would I get a copy of the CEL's. Also do you think the
connections for the AFC for the MAP sensor could possibly be
the problem?

Oh ya does anyone know if there is something like the dsm link
that would work for our cars?
60790, RE: Anyone had to deal with CEL 121, or CEL 455
Posted by tim97rs, Oct-06-03 05:01 AM
Up top, under "info&specs". theres a whole world
if good info up there, check it out!!! you wont be
disapointed. heres the link:
http://www.2gnt.com/nuke/modules.php?name=Sections&op=viewarticle&artid=8
60791, RE: Anyone had to deal with CEL 121, or CEL 455
Posted by Franklindsm, Oct-06-03 05:30 AM
nm:)  hit me up on AIM and ill send you the copy of all the
codes, ive got em on my computer in a text file
61446, RE: Anyone had to deal with CEL 121, or CEL 455
Posted by Therein10, Oct-14-03 06:07 AM
Just thought I would let everyone know. After talking with
many mechanics and you guys. I was able to test all my sensors
and wires and none of it was the problem. The problem turned
out to be that the fuel cut defender had gone bad and was
screwing of the MAP signal. So if you get CEL 14 and or 24
check your fuel cut defender's as well as the sensors. Thanks
for the help!:thumbsup 
61456, RE: Anyone had to deal with CEL 121, or CEL 455
Posted by tim97rs, Oct-14-03 08:38 AM
Or get rid of that POS altogether, and get the "missing
Link" !!!