Function of oil pressure sensor is checking the oil pressure and sending out an alarm signal when the pressure is not enough. When the oil pressure is not enough, the oil lamp on the dashboard will light up.Insufficient oil pressure alarms are generally caused by oil sensor plug failure, insufficient oil, oil pump filter blockage, oil pump damage.If there is an oil alarm signal, take the time to repair it.
If the oil pressure sensor switch is damaged ,The oil pressure signal display will indicate that the oil pressure of the engine is lower than the specified value. The ECM considers it to be a fault and stores the fault in the form of a fault code 415.At this time, because the oil pressure is too low, the protection function of the engine works, forcing the power and speed of the engine to drop, and may cause the engine to stop for protection.
Performance after the oil pressure sensor is damaged
1：After starting, the oil pressure indicator light is always on
2：The engine fault light is always on
3：Idle speed, the oil pressure value is displayed as 0.99
4：Fault code: PO1CA (the voltage of the oil pressure sensor is higher than the upper limit
How to judge the quality of oil pressure sensor
1：If it is short-circuited, the display is normal, indicating that your sensor is a normally open switch output.
2：The switch has only two states: on and off. If there is oil in the case but the sensor still has no output, it means that the sensor is broken.
3：See if your sensor is a two-wire system. If it is a two-wire system, connect a small bulb (5-24V) in series to see if the bulb can be measured. If it does not light up, it must be broken (with oil) )
If the oil pressure sensor switch is broken and causes oil shortage, the oil pump does not work, etc., the oil gauge will not respond and will not give an alarm if the oil pressure is too low, which will cause major mechanical accidents such as tile burning. Therefore, you need to always pay attention to checking the pressure sensor. Situation, if damaged, need to be replaced in time 。
Post time: Dec-28-2021