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Tuner in Training
C121C DTC After Cam Swap
Anyone dealt with a DTC C121C torque request denied ??
I did a mild Comp Cams Stage 1 cam (201-300-17) with lockout on a 2010 Dodge Ram 5.7 2WD.
MDS delete- non MDS lifters and solenoid plugs - runs pretty good until my Traction Control light comes on.
The truck came in my shop with a blown motor so I dont know if it was an existing issue or not.
Book says causes are
EXCESSIVE LOAD ON ENGINE
TRACTION CONTROL OPERATING FOR TOO LONG
ANTI-LOCK BRAKE MODULE
POWERTRAIN CONTROL MODULE
I did an 2009 RAM 5.7 not tool long ago and did not have this problem, only difference it was a 4 WD
I swapped ABS module - no change.
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Tuner in Training
Same issue here. Did you figure it out?
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Banned
What happens when your traction control light comes on?
Post the stock read and the current tune
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Potential Tuner
I was just having this same code c121c set after cam install and pcm replacement for me the fix ended up being timing i had it off 1 tooth re timed engine and runs great now hope this help's