Hey everyone, I just bought a '05 Dakota V8 Magnum 4x4 auto with 66K miles. I'm the third owner and the truck is pristine. However; driving home yesterday the check engine light came on. I went to the parts store today and they hooked it up and the computer gave a p1120 code. The parts store guy checked the list and said there was no dakota reference for that code and said they couldn't do anything. I even had him check it again to make sure he had the right code. Any thoughts on what this might be?

If this has any bearing; I live in the rain soaked northeast where there has been a lot of flooding. My truck survived the floods but I did have to drive through a lot of standing water (less than 6"). I noticed the driver side floor was completely soaked. Could this have screwed something up?

 

That code is a generic Throttle position sensor code. Try resetting your computer and see if the code comes back. If there is a true fault, the ECU should come back with either P1121 (TPS Circ Interm Hi Voltage) or P1122 (TPS Circ Interm Low Voltage)

if you need help resetting your pcm, just ask.

Welcome to DF.

 

Thanks, will try that.

 

You're most welcome.

Did you have a chance to reset the computer yet?