hi i have an 04 and it just threw in a check engine light a p0335 and p0131 one is a crankshaft sensor or something, and the other is a low voltage o2 sensor i belive, what exactly should i do ? or is there an easy fix or maybe some one else has gone through this before? the car is salvage but it has 15k miles on it. Any input can help thank you.. i believe this is the right section to post this... if not i apologize and please direct me in the right way.

 

The crankshaft PS is sometimes just a problem with the connector. Mine wasn't-the senser had to be replaced. An easy job, if you have the tools. Do a search here and there is a step-by-step thread for replacement.