Question Service Engine Soon light

[Dieselpwrdredneck]

I've been gettin a check engine light, if i really get on the throttle goin down the road with the chip turned up, it goes into "limp" mode and CEL. I can here a diferent tone in the exhaust too, couple min later light goes off and back to normal.
What is this and what do i need to do to fix it?

Thanks
Neal

 

[Fullboost]

P1211 ICP TO HIGH/LOW

Its a common code for chipped trucks in a hot program like the 140 under hard acceleration.

 

[JRJ04]

probably overboosting. get a boost fooler and you should be good to go.

 

[Dieselpwrdredneck]

I dont think its overboost, it dont get that high when it does it sometimes

i dont know what the code is, i dont have a reader
what can i do to get ride of the ICP code? if thats it
Some thingt i can make? or buy?

Thanks again

 

[Red Monkey]

I use to get the same code when I used a Superchip programer. My local Ford mechanic said not to worry about it but, my truck never went into 'limp' mode. In fact I couldn't tell that it ran any different. After going to a DP Tuner I no longer have that problem or any CEL problems just a GREAT running 7.3, thanks Jody!!!