Question about 2003 Ford Focus

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My 03 Focus has failed emissions 5 times now...same codes as always. It's failed every year, and ive reset and driven and passed. now, fail.

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  • vixenkitty02 Sep 14, 2009

    Nothing in the tail pipe, never been to Europe. The same codes come up--Catalyst, evap system, oxygen sensor, oxygen heater, EGR system. I looked in the past records of the "failed" times and those are the same codes ive gotten for 6 years. Ive always been able to warm up the car and get it to "pass" ...now, those monitors "aren't ready" and im getting my registration revoked...I can't figure it out.

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Sounds like the cars computer is bad to me.Usually called PCM or ECM. You could try a reboot of the computer by disconnecting the battery for a couple of hrs. Then you would have to drive a while to see is it is storing the info.

Posted on Aug 07, 2010

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Same problem here. Test result printout says that OBD monitors are not ready. The guy asked me if I recently disconnected the battery because that action resets the computer and if that happens you have to drive your car anywhere between 50 and 100 miles and then redo the test. Well in my case it has to be something different as I did not disconnect battery. I read it also may be an electrical problem that causes resetting the computer.

Posted on Sep 15, 2009

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By failed Emmissions you mean it failed inspection? If this is the case you got some bad gas somewhere. If you ever had the vehicle in Europe then you most likely will need to have the exhaust system replaced as they test from the tail pipe. This could also be the Catylitic converter. If you are talking about the check engine light going off it is most likely an O2 Sensor that needs replaced.

Posted on Sep 12, 2009

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