Warning. The oxygen concentration sensor on the VAZ 2110 is installed next to the catalytic converter, which heats up to a high temperature when the engine is running. To avoid burns, check the oxygen concentration sensor and remove it after the engine has completely cooled down to a safe temperature. Before performing repair work, read the safety precautions for repairing the engine management system (see "Precautions when repairing the engine management system").
To perform repair work on replacing the oxygen concentration sensor, you will need a multimeter (in voltmeter mode).
Examination
1. We are preparing the vehicle for repair work (see points 1 and 2 "Preparing a car for maintenance and repair").
2. Disconnect the wiring harness connector from the oxygen concentration sensor connector.
3. Connect the negative probe of the voltmeter to the engine ground. Turn on the ignition on the car and check the supply voltage of the heating element at terminal B (the terminal designations are marked on the wiring harness block).
Note: The voltage at the terminal must be at least 12 V. If the voltage does not reach the connector or is less than 12 V, then the battery is discharged, the power supply circuit is faulty, or the ECU is faulty.
(The article is taken from an online resource: VazBook.ru)
4. Having connected the "minus" probe of the voltmeter to terminal C, we measure the voltage between terminals A and C.
Note: The voltage at the terminals should be 0.45 V. If the voltage does not reach the connector or it differs by more than 0.02 V, the power supply circuit is faulty or the ECU is faulty.
Removal
1. Remove the two sensor wire holders.
2. Using a 22 mm wrench, unscrew the oxygen concentration sensor from the catalytic collector and remove the sensor from the vehicle.
Recommendation: You can verify that the sensor is faulty by replacing it with a known good one.
Installation
We install all removed parts on the car in the reverse order of removal.