Six oxygen sensor troubleshooting methods

Oxygen sensor is a sensor belonging to the gas sensor, which is the determination of the exhaust gas after combustion engine whether the excess oxygen and the oxygen content of the detected signal is sent to the engine into a computer. Many people are more concerned about is the oxygen sensor often fails once , how to solve it ? Xiaobian collected data through simple for you to make a presentation . Oxygen sensor will allow electronic fuel injection system computer can not get the oxygen concentration in the exhaust pipe of the information , and therefore can not be on the air-fuel ratio feedback control , the engine will increase fuel consumption and exhaust emissions , the engine idle instability , lack of fire , breath vibration and other symptoms . Therefore, you must timely troubleshooting or replacement.An oxygen sensor poisoning: Automotive Temperature Sensor poisoning is difficult to control and often appear as a failure , especially frequent use of leaded gasoline cars, even new oxygen sensor , can only work a few thousand kilometers. If only a slight lead poisoning , and then use a tank of unleaded petrol , will be able to eliminate the oxygen sensor surface lead to resume normal operation. However, due to the high exhaust gas temperature , leaving the lead penetrated its interior , hindering the diffusion of oxygen ions , the oxygen sensor failure , then it can only be replaced.In addition , the oxygen sensor is a silicon poisoning is common. Generally , gasoline and lubricants containing silicon compound combustion generated silica, silicone rubber gasket improper use of silicone emit gases will cause the oxygen sensor failure , and thus to use good quality fuel and lubricants . Repairs to the correct selection and installation of rubber gaskets , do not use the sensor coated with a solvent other than specified by the manufacturer and release agents.2 , carbon : As bad combustion engine , Automobile Temperature Sensor surface carbon or oxygen sensor into the internal oil or dust deposits , hinder or obstruct an external air into the oxygen sensor inside the oxygen sensor output signal loss prospective , ECU fuel ratio can not be corrected in a timely manner . Produce coke, mainly for increased fuel consumption , emission concentrations increased significantly. At this point , if sediment removal , it will resume normal operation.3 , the oxygen sensor ceramic fragments : oxygen sensor ceramics hard and brittle, with a hard object hit or purged with strong air flow , are likely to make fragmentation and failure. Therefore, be particularly careful when handling , identify problems and timely replacement.4 , the heater resistance wire blown : for heated  Coolant Temperature Sensor , if the heater resistance wire erosion, it is difficult to reach normal operating temperature of the sensor and out of action . Replace heater resistance wire .5 , the oxygen sensor internal circuit broken off : connect internal wiring.