the codes on my 99 Accord EX V6 are P1457 and P0140. One is EVAP canister and the other is the 02 sensor. Which of these should I address and fix first. Could one of these codes cause the other code. I would like to order parts if necessary so any help would be appreciated.

 

How many miles are on the car?

Id imagine the sensor is the easiest the replace if done right.