Dear Doctor: I have a 2004 Honda CR-V with only 25,000 miles. The engine light is on and the scan codes show a P0134/P0135 sensor. I get about 24 miles per gallon in local driving. I’ve been quoted ...
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Master your car’s O2 sensor diagnostics
Your oxygen (O2) sensors are small but mighty — they help your engine run efficiently, cut emissions, and prevent costly damage. With the right OBD-II scanner and a bit of know-how, you can decode ...
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