Solving the yellow oil warning light on start up and diagnosing a bad oil level sensor on BMW E46 with N42/N46 engine.
I explain what red or yellow oil warning light mean, then I use INPA to check for codes. I get the following error:
27C3 CDKTOENS - Signal Oelniveausensor (TOENS)
with description:
Signal abgefallen
Testbedingungen erfuellt
Fehler momentan vorhanden und bereits gespeichert
Fehler wuerde kein Aufleuchten einer Warnlampe verursachen
I also explain a little bit how the thermal oil level sensor works. I tried to clean the oil from the sensor connector but that did not work. I then replace the sensor with a new one and the problem is solved.
Oil level sensor part number (N42/N46 engine): 12617501786
Buy Valve Spring Compressor Tool Kit for BMW N42/N46: [ Ссылка ]
How to use the VSCT tool: [ Ссылка ]
Fix oil consumption on BMW N42/N46: [ Ссылка ]
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