where is the bank 1 sensor located?

Asked by Feb 28, 2019 at 05:41 PM about the 2010 Buick LaCrosse

Question type: Maintenance & Repair

2 Answers


Bank 1 is the side of the engine where cylinder number 1 is. Hope that helps! Jim


You may want to try this before changing out sensor if you use the 87 octane gas all the time try using the 93 or 94 octane gas my check engine light came on saying oxygen sensor bank one replaced sensor and within 2 days light came back on saying bank one oxygen sensor to make along story short started using the 93 and 94 octane gas it took 10 tank fills and light coming on and going off 4 times but light has gone out and stays out.

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