Computer Code

[bubba81]

I am getting a ses light, i took the car to Autozone and had it checked, it brought code P1640, They said that it is a dealer code. Has anyone ever heard of this. if so, any advice is greatly appreciated thanx

[Doubt_Incarnate]

i looked in the book for my obd2 code reader, it says "Driver 1 input voltage high." whatever that is, i guess i wasnt much help, but it seems like a pcm problem. if in fact autozone was right. i don't like autozone.