Standing in the front of the engine and looking at it.
The right side of engine-or head will be bank 1
The other head on the left will be bank 2.
Where is bank 1 on a 2002 chevy astro van
drivers side, after catalytic converter.
which sensor is for bank 1 sensor 1 on a 2006 nissan xterra
It is behind the catalytic converter
It does not have 1, Chevy did not use a drain plug in there converters.
Trouble code P0170 means: Fuel Trim (Bank 1)
Bank one is the side of the engine with cylinder #1. Sensor 2 is after the catalytic converter.
Bank 1 is the drivers side of the engine. Bank 2 is the other side.
Trouble code P0135 means:O2 sensor heater circuit malfunction (Bank 1 Sensor 1)
passenger side first sensor before cat
1-8-7-2-6-5-4-3
Trouble code P1153 means: HO2S Insufficient Switching Bank 2 Sensor 1