Originally Posted by njford1
I just bought my first Ford....ive been a Chevy guy forever and I need help. Just installed an intake and full exhaust on a 2012...started to tune the truck everything was smooth until it was done. I got a message "starting system fault" in the driver screen...called H&S and they pretty much told me I fried the PCM and need a new one. Any ideas? It gave me two codes it seems like a security lockout or something
Yes, this is an issue we have seen a few times before. A few times at a dealer level, and a few times with tuning devices (H&S as well as others). We are trying to get one of these faulty ECMs back from a customer right now so we can diagnose it further. There may be a solution, but we need to have one of the failed units here first to check it out.
The chances of this happening are very very rare. It will always happen the first time you "flash" the truck. The ECU crashes and will no longer allow the truck to start. The odd part is that you can still communicate and flash the truck as many times as you want. This most likely means that the portion of the ECU that fails is outside of the area that tuning companies read/write data from. Just for reference, I dare say we have tuned over 5,000 6.7L Powerstroke trucks. 3 have failed on us. 0.06% is very minimal in the grand scheme.
I believe our techs are working with the OP towards a solution. Because it is a factory flaw, our first suggestion is to see if your dealer will warranty the ECU. That is the fastest way to get the truck back up and running at this point.
Thanks for your patience and understanding, we hope to get one of these ECMs here soon so we can get more info on what is failing!