Help! OBD II codes!

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Help! OBD II codes!

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Help! OBD II codes! - 10/16/2007 10:56:40 AM

pxx8511

Posts: 2
Joined: 10/16/2007
Status: offline

I got three error codes in my 2000 Mazda 626. P0421, P2242 and P0000. I checked the OBD II codes. It says P2242 O2 Sensor Positive Current Circuit High (Bank 2 Sensor 1) P0421 Warm Up Catalyst Efficiency Below Threshold (Bank 1)
Anybody know what that means? Do I need to go to the garage? Thanks!