1) Open circuit, short circuit and virtual connection of lines;
2) The connector is corroded and the needle is loose;
3) The joint is not tightly sealed, and the internal parts are burnt due to water ingress;
4) Virtual connection of power supply line;
5) The probe is polluted, resulting in inaccurate measurement;
6) The internal chip is damaged.
Specific impact of damaged nitrogen oxygen sensor on the vehicle:
1. Fault lamp on: it will directly cause multiple fault lamps of the engine to light up, and at the same time, there will be relevant fault storage records in the control unit.
2. Shorten the service life: If the emission data cannot be fed back accurately, the engine control unit will be unable to adjust the emissions accurately. This will shorten the service life of the exhaust emission treatment equipment.
3. Incorrectness of combustion control: it will lead to confusion of combustion control, resulting in weak acceleration, idling jitter, failure to start, etc.
4. Damage to the nitrogen oxygen sensor will also lead to failure in fueling, insufficient power, CAN line communication failure, etc