Check engine light - O2 sensor
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Junior Member
Joined: Feb 2009
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Check engine light - O2 sensor
Mazda 626 10700 miles.
I got a check engine light recently. It was diagonised for a oxygen sensor failure. Replaced the sensor but got it back within 30 miles. Another sensor had failed so replaced it again. After 10 miles, the checklight is back again.
Is there something wrong with my car or I need to consult some other automobile engineer?
I got a check engine light recently. It was diagonised for a oxygen sensor failure. Replaced the sensor but got it back within 30 miles. Another sensor had failed so replaced it again. After 10 miles, the checklight is back again.
Is there something wrong with my car or I need to consult some other automobile engineer?
Senior Member
Joined: Aug 2007
Posts: 1,324
Likes: 1
Check engine light codes are only a guide for diagnosis, once the code is pulled it is used to begin troubleshooting. An o2 sensor code can be set by many other things,vacuum leak/maf/converter/pcm/etc What was the code?
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