check engine light came on

[cbinva]

I have an 04 Matrix XR and the check engine light came on. I took it to Auto Zone and got two codes PO133 and PO441. Took the gas cap off and put it back on and the check engine light went off. Was wondering if that is all or if there is something else I should be looking for? Thanks.

[ArmyofOne]

Originally Posted by cbinva

I have an 04 Matrix XR and the check engine light came on. I took it to Auto Zone and got two codes PO133 and PO441. Took the gas cap off and put it back on and the check engine light went off. Was wondering if that is all or if there is something else I should be looking for? Thanks.

nope thats all...not sure what the codes mean, and im too lazy to look it up, but you fixed it and now all is well...carry on with your day

[Jered]

The code PO133 is a O2Sensor Circuit Slow Response (Bank #1 Sensor #1) and as for code PO441 is an Evaporative Emission Control System Incorrect Purge Flow. Basically with most cars today if you don't tighten the fuel cap enough it with throw a CEL. So just let it click a few times when you tighten it and you should be fine. By the way are you a member of MatrixOwners.com, if not you should check it out. There's lots of good accessible information that you could use and lots of great people that can help you with any questions you may have.