P0121: CEL Code :(
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From: Clifton, NJ
P0121: CEL Code :(
I got a CEL (2 of them) one was the famous P0420 and the other one came up as P0121. I already know about the P0420 one, but can someone tell me about the 0121 one?
Here is what it reads
DTC P0121: Throttle Position Circuit Range/Performance Probl
My mods are TurboXS DP, Random Tech-HIgh Flo Cat, TurboXS Cat-Back, K&N Typhoon Intake, Unorthodox Racing Upper and Lower I/C pipe kit, Hallman ES MBC, Pruven (Greddy Type S) D/V, Grounding kit (if that matters).
Here is what it reads
DTC P0121: Throttle Position Circuit Range/Performance Probl
My mods are TurboXS DP, Random Tech-HIgh Flo Cat, TurboXS Cat-Back, K&N Typhoon Intake, Unorthodox Racing Upper and Lower I/C pipe kit, Hallman ES MBC, Pruven (Greddy Type S) D/V, Grounding kit (if that matters).
not too sure on it, but i heard there was a lot of problems with the Typhoon intake.....try to take the intake off and put the stockies back on to see if thats the problem...it also could be your high flo-cat.....
... the P0121 code just came on this week 
Thread Starter
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From: Clifton, NJ
there is no "wrong way" of bolting and screwing on an EASY job of I/C pipes... there is only one way to do it. I have no issue, car is running great and STRONG.
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From: Clifton, NJ
Originally Posted by EvoJimbo
Maybe you guys damaged the throttle position sensor when you installed your IC pipes?
the light was on before i put the I/C pipes on
