2002 Ford Focus Check Engine Light

Tiny
JIMANGUS
  • MEMBER
  • 2002 FORD FOCUS
Engine Mechanical problem
2002 Ford Focus 4 cyl Two Wheel Drive Automatic

My check engine light came on and after going to a local service center was told to replace the O2 sensor and disconnect the battery terminals. This worked and the light went off for about a day before coming back on. I undid the terminals again and the light went ou for another day. How can I get it off for good?
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Saturday, April 10th, 2010 AT 4:17 AM

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Tiny
RENAUDTN
  • EXPERT
You have to fix the problem for good otherwise the light will come back every time. Disconnecting the battery only erases the DTC (diagnostic trouble code) the computer stored; it doesn't fix the problem. When you took your car to the service center, what trouble codes did they find?
If you give me the code(s) I can try to help.
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Monday, April 12th, 2010 AT 8:58 AM

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