It means you need to replace your O2 sensor, bank 1. You can buy a new sensor at any auto parts store, usually around $20. The bank 1 means it is the first O2 sensor in the system. To find it, start at you exhaust manifod, and search back along the piping. The first O2 sensor you find is the one that is failing. A wrench or socket can be used to removed the old and install the new.
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It means you need to replace your O2 sensor, bank 1. You can buy a new sensor at any auto parts store, usually around $20. The bank 1 means it is the first O2 sensor in the system. To find it, start at you exhaust manifod, and search back along the piping. The first O2 sensor you find is the one that is failing. A wrench or socket can be used to removed the old and install the new.
Good Luck!!