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NEWBIE
O2 Sensors
Hi fellas, quick question on 2 02 sensors. I got the codes of the odb and want to replace them. However, I did not know which sensor to buy based on upstream or downstream.
P0141(Bank 1, Sensor 2)- upstream or downstream?
P0155(Bank 2, Sensor 1)- upstream or downstream?
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New Member
Last edited by vr4gto; 02-27-2012 at 02:54 PM
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NEWBIE
Cool, so from that list, both say (heater). This means downstream right?
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New Member
Yes, the heated O2 is downstream
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4cly b1s2 is the p/s downstream. B2s1 is driver side upstream
V6 b1s2 is the rear exhaust manifold down stream. B2s1 is the front exhaust manifold upstream
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NEWBIE
OBD reader says all o2 sensors bad
Last edited by huskerinaz; 05-16-2012 at 06:02 PM
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