Why does the engine oil warning light come on after wading through water?
1 Answers
The reasons for the engine oil warning light coming on after wading through water are as follows: 1. Sensor issues: The sensors mentioned here include coolant temperature, crankshaft position, air flow, intake air temperature, oxygen sensors, etc. When these sensors are damaged, have poor contact, or experience signal interruption, the vehicle's ECU cannot accurately obtain engine data, which will then trigger the engine warning light. 2. Oil quality issues: The oil quality referred to here includes both fuel and engine oil. The fuel used in cars generally has a specific octane rating, and engine oil can be semi-synthetic or fully synthetic. Manufacturers usually recommend which octane fuel and type of engine oil to use. If the owner does not follow these recommendations, prolonged use can lead to engine wear, causing the warning light to illuminate. 3. Poor combustion of the air-fuel mixture: Faults in the engine's spark plugs, ignition coils, fuel pump, or clogged fuel lines can all lead to poor combustion of the air-fuel mixture. Poor combustion results in engine carbon buildup or knocking issues, which are ultimately detected by the engine's oxygen sensors. After reporting to the ECU, the warning light will naturally illuminate as a warning.
