1999 Hyundai Accent check engine light

1999 HYUNDAI ACCENT
110,000 MILES • 4 CYL • FWD • AUTOMATIC
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FRAOORTIZ
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my car gave me to codes when i plug the scanner:

1. PO135 heated oxygen sesor bank 1 sensor 1

2. PO145 heated oxygen sensor bank 1 sensor 2

I replaced them with new ones, check engine no more, then i ran the car for 20 miles so the computer recognize the sensor and the ligth turn on again.

What could be the problem ?
Nov 6, 2008 at 7:00 AM
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