Quote:
Originally Posted by mustang67408
Bank 1 is the bank closest to the firewall . Bank 1 denotes the bank with cylinder #1 in it. Sensor 1 is the first sensor in front of the CAT.
Attached is a document that may help you see which is which.
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my 02 sienna has same code(p1135),but i don't know where is b1s1 o2 senser located, please help