P0137 = O2 sensor circuit low volts (bank 1 sensor 2). Could be a faulty B1 S2 O2 sensor.
Lambda is o2 sensor in exhaust pipe.
An O2 sensor can be purchased at any auto parts store.
where is the O2 sensor on a 2002 chevy trailblazer
The O2 sensor provides necesary information to the computer. If the vehicle is burning too much fuel there will be insufficient O2 in the exhaust. If there is too MUCH O2 in the exhaust there is a possibility that the vehicle is not performing properly and also the possibility that you will burn valves, although your EGR valve should prevent that. Periodic replacement of your O2 sensor is just good maintenance and helps with good fuel economy.
Remove the vacuum hose from the O2 sensor. Remove the wiring harness. Remove the O2 sensor retaining screws. Reverse the process to install the new O2 sensor.
To change an O2 sensor you need to disconnect the wiring harness from the sensor. Use an O2 sensor socket and ratchet set to remove the old sensor and replace with the new one.
O2 Sensor Stuck Lean (Bank1 Sensor1).
O2 Sensor stuck lean bank 2, sensor 2.
You can't.
unscrew it
the o2 sensor is located in the exhaust manifold. As you pop the hood and look at the engine, you should see a silver colored heat shield. Unplug the old O2 sensor. Then remove the heat shield. Its easier this way (10 MM bolts). Get a O2 sensor socket and remove the sensor and replace. The rear sensor is located in 1 0f 3 places. Either before in or after the catalytic converter. For this one you just get the O2 sensor socket and remove. (When the engine is cold) Madd Dogg 40/40
That means that your o2 sensor is stuck lean (bank 1 sensor 1)
Remove the vacuum hose from the sensor. Remove the sensor retaining screws. The sensor will come off. Reverse the process to install the new sensor.
It has a conector, just un plug it. Then remove the 02 sensor from the exhaust.
The O2 sensor on a 2000 Hyundai Elantra is removed by disconnecting the wiring harness and unscrewing the sensor from its housing. It can then be removed from the vehicle, inspected, and replaced if needed.
To remove the sensor, turn it counter clockwise. Be sure to coat the threads with anti-seize compound when replacing.