Engine/Transmission (1998.5 - 2002) Removed Edge Comp for smog, Check engine...

[FFSchooley]

I pulled my edge comp for CA smog test, disconnected the wiring harness, and now have the check engine light on. I pulled the codes and I got the companion code, as well as 0234, overboost. I did some searching and it seems like the MAP sensor could be failing. My question is why would it be OK with the comp hooked up, but be throwing a code when it is disconnected? Any other thoughts on what could be wrong?

 

[Diesel Dummie]

when its hooked up, the comp is telling the computer what it wants to see, just make sure you have a good connection in the plug and also take out sensor and clean it, they can get dirty over time and give a false reading.

 

[SierraRam]

If you installed the boost elbow you will still be running the higher boost without the comp fooling the ECM thus the overboost code.