I got this code. I have had it before but it goes away. However my snow performance stage 2 water/meth injection now doesn't work. Would this have something to due with the code? I have checked for boost leaks but found none. When driving, boost seems to be normal (65mph @ 12-13 boost with twins).

 

First thing is make sure there's a good connection at the MAP sensor.

MikeyB

 

checked it several times. Light still comes on. Truck runs great.

 

Do you still get the same code with the TST removed?

If so possibly there's an issue with the MAP sensor or wiring. Look for chaffing on the wiring harness braces in that area.

MikeyB

 

i have had this code a few times too since i put in the smarty. I was running a fooler with the smarty and since i took out the fooler i haven gotten it again.

Dont know if this helps you, but just thought i would write my experience with it.