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  1. New Member Area
    I have a 2005 altima 2.5. Couple of weeks backs, its SES light went on. Checked with local mechanic and code comes P0420. So he advised me to replace O2 sensors. He replaced both the sensors (upper and lower one). After 6-7 miles, SES again pops up. This time the code is different. The code is...
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