I put an Sp Diesel box on my truck. I got a couple of codes.

P0111 Intake Air / Charge Temperature Sensor Performance / Rationality
P0237 Turbocharger Boost Pressure Sensor Low
p0069 BOOST KEY ON RATIONALITY

I cleared the last 2 but the first one came right back.

P0111 Intake Air / Charge Temperature Sensor Performance / Rationality
Even with the box disconeccted I still have the intake temp sensor code being thrown. Any ideas on troubleshooting besides just replacing the sensor?

 

I think we have sent you an email responding to your question, but here goes for others who may be interested.

The 111 code is a result of a manifold air temp versus intake air temp correlation that happens on cold startup, we have had this issue pop up on a few trucks and are working on a permanent solution. We are willing to modify your harness to solve this issue, but the box may be derated a little.

Don't worry about the code still being there your sensor is fine. With the truck returned to stock it takes a couple cold start cycles before the code will allow itself to be cleared,even with a scan tool. This behavior makes it a real bugger to diagnose the issue sometimes.

 

Thanks for the quick reply. Hopefully the new harness will cure my problem. I'm just getting tired of that annoying Light.

 

Let us know the results. Thanks
Tony

 

i have the same code coming up. PO111
what am i looking at here. i see this is an old thread but i didnt see the out-come or any answer to this problem...?