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the oxygen sensor(s) on any car is gonna be screwed in the exhaust. the primary sensors are screwed in the exhaust manifolds. the secondary sensors are going to be screwed right before, in, or right after the catalytic converters. if your getting a check engine light, find out what code is in the computer and the definition. b1s1 means bank 1, sensor 1. bank1(or2) means which exhaust side, and sensor1(or 2) is the location of the sensor on that side. the side that has the number 1 spark plug is going to be bank 1.

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16y ago

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