Long story short. Got a Steeda tune. Threw wrench light and p0108 and p0406. After 4 weeks with no revision, went with MPT and after a day with the new tune, threw the same code. They adviced me to return to stock and see if get the same codes. I'm now throwing p0106, p0108. I'm thinking something about the Steeda tune has messed something up because the only codes I threw before the tune, were for my rear o2 not being in and my longtubes not being tuned. Any advice? I read it's something to do with the egr? Help please.

 

these codes are for map sensor circuit performance and EGR position sensor circuit performance. this typically indicates a wiring concern and shouldnt have anything to do with the tune. if you have reverted back to the stock tune, and are still gettiing codes, you have an actual fault, and the tune is not the cause.

 

Okay so what should I look for in order to fix the issue?

 

to be honest, if you dont have wiring diagrams, or a multimeter/test lights/power probe at your disposal, or dont have experience troubleshooting electrical faults, i would have a professional troubleshoot it for you. electrical can be tough for people who havent been trained

 

I have access to a multimeter. I was going to swap out the egr sensor but I want to check it first. What should the voltage be at?