For some reason the engine 1 fuse in the pic keeps blowing and the truck won't start.Checked all grounds they look good.It's a 01 Dakota Quad cab 4.7.Also codes p0135 and p0155 for 02 sensors come up after the fuse blows.

 

What pic?

 

I concur.....

 

Sorry that was a typo I meant PDC. Lol

 

Your codes are both for the heater circuits on the O2 sensors. Don't know if those get power from the fuse that keeps blowing. Got wiring diagrams?

 

Don't have a diagram. But the only time the codes show up is after the fuse blows.

 

Well, it appears the O2 heaters have their own fuse. (Fuse U, in the PDC.)

Which fuse specifically, is blowing?

 

Engine 1 fuse 30a.top right 2nd fuse down if that helps.

 

I have the 01 service manual, but, I am just not visualizing which fuse.... Could you post a pic?

I see a fusible link for the engine.... but, I don't think it's in the right spot. (unless the pic in the manual is oriented wrong.....)

 

How to you attach a pic?