With your does Astro van bank 2 sensor 1 you're talking about the oxygen sensor past the catalytic converter that's how you find
SOURCE: 1997 chevy astro van
The control module is located just behind the ignition coil. Sorta hard to get to but we got it and the van is running great.
SOURCE: oxygen sensor need to know where bank2 sensor one is located
Bank 1 is the same side as cylinder #1 and bank 2 is the same side as cylinder #2. Good luck and hope this helps.
SOURCE: OBDII scanner show error on heater circuit o2
is your vehicle equip with a v6 engine? if so it mean when standing in front the vhicle the exhaust on your right is on bank 2 & the o2 sensor should be mounted there
SOURCE: 95 chevy astro van, where is the a/c clutch relay?
there is no relay power from control panel through pressure switchs to compressor
SOURCE: E-Check Light P0125 and
Air/Fuel Sensors are mounted upstream of the catalytic converter. They are located on the exhaust manifold side of the catalytic converter (pre-converter - Sensors 1). Oxygen Sensors are mounted downstream of the catalytic converter (post-converter - Sensors 2). The catalytic converter has two chambers (left and right). Bank1 is left, drivers side. Bank2 is right, passengers side. The Bank2 Sensor1 sensor (Air/Fuel Sensor) is the one located on the 'right and ahead' of the converter. The PowerTrain Control Module (PCM) is reporting that the heater or circuit ( wiring / plug-in) of the sensor is malfunctioning.
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