Bank 1 is cylinder 1 side of the motor. Sensor 2 is the back oxygen sensor (after the catalytic converter.
P0135 O2 Sensor Heater Circuit Malfunction (Bank 1 Sensor 1) Bank one is drivers side. Sensor 1 is the one closest to the engine.
The bank 1, sensor 3, O2 sensor would be the O2 sensor post cat.
its the O2 sensor on the driver side above the catalytic bank1 sensor 1 is the passenger side above the catalytic bank2 sensor 2 is O2 below catalytic on driver side bank1 sensor 2 is O2 below catalytic on Passenger side
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
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.
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.
it means fuel trim on bank 2 has reached full lean limts could be many things air or vacum leak bad cat. coverter or o2 sensor. should have dealer check coputer for latest computer flash update
Is this bank 2 sensor 1 or sensor 2?
Bank 1 is the bank of cylinders that contain cylinder 1. The O2 Sensor 1 is the O2 sensor located in the exhaust system between the cylinder head and the catalytic converter, also known as the "upstream" O2 sensor.
That would be the O2 sensor after the catalytic converter.
It is O2 Sensor Circuit Malfunction possibly (bank 2 Sensor 2) Yogi karki It is O2 Sensor Circuit Malfunction possibly (bank 2 Sensor 2) Yogi karki