I used to have a legacy.My legacy was totaled in Arizona ....I have an outback now......so far it drives ok, but not like the legacy and engine light come on, I don't know what it can be?

Take it to a shop or store that has a OBDII code reader.

Take it to a shop or store that has a OBDII code reader.

 

A parts car parts store such as Auto Zone, or Advance Auto Parts, will pull the OBD11, upon you asking them to do so. Neither shop charges for this service. They will then tell you the results of the code read, and tell you what needs to be replaced to fix the problem.

 

Usually the code read points out some deficit in a pollution control device.

Does the Check Engine Light ever blink?

 

Like Rooster said, many auto parts stores will scan CEL codes for free. Just ask.

Write down the code and post it for us to troubleshoot.

I got 10 bucks on P0420. I have a 96 impreza and a 97 outback both chunking this code.