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In most cars, they are exactly the same between banks 1 & 2. In fact in a lot of cars, you could use the down stream sensors as the upstream sensors (this all assumes OBD2). So, yes, order exact for both sides. Secondly, the reason your car runs better when you pull the MAF is the same reason it runs the way it does in open loop. When you pull the MAF, ...


I have a 2005 Hyundai Elantra, and I was getting OBDII error codes: P2626 Hyundai - HO2S Pumping Current Trim Circuit/Open Bank 1 Sensor 1 .. and later, I also got P2196 Hyundai - HO2S Signal Stuck Rich Bank 1 Sensor 1 My car was sputtering, somewhat intermittently. It would intermittently lose power rather suddenly while accelerating. The egine was also ...

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