P0137 = O2 sensor circuit low volts (bank 1 sensor 2). Could be a faulty B1 S2 O2 sensor.
Assuming you mean P0135, that would be O2 sensor heater circuit malfunction (bank 1 sensor 1). If the wiring to bank 1 sensor 1 is not damaged, it is probably a bad bank 1 sensor 1 O2 sensor. Replace it.
Trouble code P1320 means: Distributor Signal Interrupt
There are three 02 sensors. The front left sensor is the forward most sensor, on the left bank of the engine. The next is the front right sensor on the right bank, the rear sensor is after the catalytic convertor. see below web site: http://www.courtesyparts.com/A32_O2-sensors.html
where is the bank 1/sensor 2 O2 sensor on a dodge caravan...to the rear of the catalitic converter or to the engine (front) side of the converter?
That is passenger side after the catalyst.
O2 Sensor malfunction, Bank 1, Sensor 1
That is the pre - cat 02 oxygen sensor.
The bank 1, sensor 3, O2 sensor would be the O2 sensor post cat.
the bank 2 is on the driver side i got this info from an Isuzu mechanic
http://wiki.answers.com/Q/Where_is_the_O2_sensor_on_a_2000_buick_lesabre"
You did not specify which O2 sensor it is. Is it sensor 1 bank 1, sensor 2 bank 2, sensor 2 bank 1, or sensor 1 bank 2. There are four O2 sensors on a mazda 626
There is no fuse for the O2 sensor.
usually bank 1 is the bank with # 1 cylinder in it and sensor # 1 is the front o2 sensor(usually in the manifold). You will need a O2 sensor socket or a 22mm wrench or deep socket.
2004 vw beetle up stream o2 sensor location
P0137 = O2 sensor circuit low volts (bank 1 sensor 2). Could be a faulty B1 S2 O2 sensor.
Bank 1 is the bank of cylinders that contain the number 1 cylinder. O2 sensor 1 is the first O2 sensor in the exhaust system between the engine and the catalytic converter.