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How to test your O2 sensor

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15K views 8 replies 9 participants last post by  jaywebguy  
#1 ·
#6 ·
Excellent info! Ironically, I thought my o2 sensor went bad, so I bought another unit. Dealer called me today and told me that my o2 sensor was fine, but that the AEM gauge was defective...wish I saw this yesterday :(