p0137 HOW DO I FIX THAT? everyone keeps tellin me its a o2 sensor but what is that where is it and how do I fix it whats it gonna run me? And I got a p0303 and I was told that it could either be spark plugs or spark plug wires but I just changed both of them about a month ago so what else could that mean?

 

If the code is for the o2 its a bad o2 sensor... there are 2 on the exhaust. One on the header and one down before the cat. I assume the second code is for a missfire. I dont want to look them up right now. If u changed the plugs are wires then you should be good. Just clear the codes out after you fix them.

 

P0137 Downstream O2 Sensor Voltage Shorted To Ground
P0303 Misfire Cylinder No. 3