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oil pressure sensor not working
Function of oil pressure sensor:
Detect the oil pressure and send out an alarm signal when the pressure is insufficient. The oil lamp on the instrument panel will light up when the oil pressure is insufficient. The failure of insufficient oil pressure alarm is generally caused by failure of oil sensing plug, insufficient oil, blockage of oil system pump filter screen, and damage of oil pump. If there is an oil alarm signal, repair it as soon as possible.
Damage of oil pressure sensor:
The oil pressure signal display indicates that the engine oil pressure is lower than the specified value, which is considered as a fault by the ECM and stored in the form of fault code 415 fault. 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 decrease, and may cause stop the engine for protection. The oil pressure sensor is mounted on the cylinder block.
① After starting, the oil pressure indicator is always on
② The engine fault indicator is always on
③ At idle speed, the oil pressure value is displayed as 0.99
④ Fault code: P01CA (oil pressure sensor voltage above upper limit)
Solution:
Check and replace the oil pressure sensor. Judgment method of oil pressure sensor. If the short circuit indicates normal, it indicates that your sensor is normally open switch output. The switching value has only two states: on and off. If there is oil in the chassis but the sensor still has no output, the sensor is broken.Do you have a two-wire sensor? If it is a two-wire system, connect a small bulb (5-24v) in series, and see if the bulb can light up. If it doesn't light up, it must be broken (with oil) .After the car starts, the oil pressure indicator will flash. At this time, everyone should immediately stop the fire and send it to the maintenance department as soon as possible; The driving force attenuation coefficient is significant. If the pressure sensor is damaged, it is likely that the automobile engine will not be moistened in time, and the driving force will be reduced to a certain extent due to the expansion of the sliding friction of the master cylinder;
Summary:
If the oil sensor is broken, if there is a lack of oil, the oil pump does not work and other faults, the oil meter will not respond and the oil pressure alarm will not be too low, which will cause major mechanical accidents such as tile burning.
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