Question about Cars & Trucks
Which side is left - HO2S left cylinder bank, sensor 1
Posted by Anonymous on
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Posted on Jan 02, 2017
if sensor indicates lean check the fuel trim if long term fuel trim is above +7 them test sensor with a piko lab scope or watch scan data and create a rich condtion by snping the throttle wide open and watch the sensor if it start to read around 700to 900mv its ok, then create a vacume leak and the sensor should read 100to 300mv i your sensor is in this range quickly its good with in 1to2 sec.
Posted on Mar 22, 2009
on my gmc i have 2 knock sensors and im not possitive if you have two or not under your intake mani but when i replaced both mine i got the same code of low input so i took the small needle out and wire brushed it clean and also traced and ran a new wire just to be safe and that solved my problem. as for bank 1,2 if it helps any my bank one is located engine side driverside and bank2 is engine side passenger side and 3 and 4 are underneath bed side. but you can see the sensors if you look real close near the headers. hope this helps
Posted on Jul 02, 2009
SOURCE: oxygen sensor confusion
1/1 is upstream sensor on the number 1 cylinder side, 1/2 is the downstream of the number 1 cylinder side, 2/1 is the upstream of the number 2 cylinder side, 2/2 is the downstream of the number 2 cylinder side. Hope this helps.
Posted on Aug 10, 2009
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