N42/N46 Oil Level Sensor Light Diagnosis 27C3 and Replacement

N42/N46 Oil Level Sensor Light Diagnosis 27C3 and Replacement | BMW E46

Рет қаралды 15,840

Жыл бұрын

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: bimmerzen.com/store
How to use the VSCT tool: • Using 3D printed tool ...
Fix oil consumption on BMW N42/N46: • BMW N42/N46 Valve Stem...
DISCLAIMER:
BimmerZen assumes no liability for property damage or injury incurred as a result of any of the information contained in this video. Use this information at your own risk. BimmerZen recommends safe practices when working on vehicles and or with tools seen or implied in this video. Due to factors beyond the control of BimmerZen , no information contained in this video shall create any expressed or implied warranty or guarantee of any particular result. Any injury, damage, or loss that may result from improper use of these tools, equipment, or from the information contained in this video is the sole responsibility of the user and not BimmerZen.

Пікірлер: 38

@danettepatrickMP Жыл бұрын

I really appreciate your content! I also have an N42b20 and not a lot of videos and resources put out there. I hope to see more content from this engine soon!

@DebtFreeCars Ай бұрын

Awesome. I was about to replace the pressure sensor. But i should check the level sensor instead. Thanks

@chadriddle3517 5 ай бұрын

Thank you for the oil light explanation! I for sure know that I need to replace my now I have not seen such a detailed video on the oil level light great job

@krzysztofploszek7342 9 ай бұрын

Very good tutorial, thank's!

@worick995 Жыл бұрын

Really thanks, i have n46b20a, theres no information about it, only you i have the same problem, i had watter also like that, it was the "watter tank",,, thank you so mutch.

@benconover72 11 ай бұрын

Very good informative video.

@noosize2540 7 ай бұрын

Thanks for this video

@jamesodongo775 Жыл бұрын

This is great, could you kindly do a video on how to know when the automatic gearbox for an N42 engine is ready for repair/service. I have been experiencing delayed shifting from my auto transmission and have been thinking of an oil change but others have been advising that I just get a new transmission. Would be great to hear from you...all the love from Kenya

@user-dk7cc8db1i Жыл бұрын

Quality video

@whateverrrrrr123 7 ай бұрын

Thanks

@Tamuzo Жыл бұрын

Great video man as always! I have the same problem with the Oil level sensor but even after changing it the error still resides. After some troubleshooting I found out that Oil was pushed through the harness into the ECU... the ECU seems fine no oil inside of it only in the plugs. Now I am struggling if I replace the whole harness or just the cables running to and from the oil level sensor 😅

@dhalsim-1 9 ай бұрын

How did oil make it to the ECU?

@doruaty1468 Жыл бұрын

Thank you for your great work. I have an off topic question regarding the camshaft position sensor. What should be the voltage for the signal wire? It should be 5V ? Because I have 11.8 and I have an error. Could you please check and let me know? Thank you for your implication.

@mbilayadaka6751 Жыл бұрын

This is good info but I have a problem my vacuum pump and camshaft keeps breaking what could be causing this to happen I ve replaced 3 vacuum pumps and camshaft for my n46 engine

@stilmotionpicture 10 ай бұрын

I have an e46 M3 S54 engine. will be the same? I do have the yellow light, and stays on after starting the car then it will turns off in several seconds. I believe my Oil lever sensor is bad..

@mr.matiss 4 ай бұрын

Very nice video. Thank you. I changed mine 2 years ago and the yellow light went on about 3 months after the replacement of the sensor. I never taught it could be a bad/oily connector. I wanted to blame the manufacturer, but now I have to check the connector. Do you use some service manual to get all the specific details on how sensor indicators work?

@BimmerZen 4 ай бұрын

Yes, I have access to the manuals where there are some functional descriptions of the subsystems.

@jaseduar 2 ай бұрын

Hello, do you know how to test an oil level sensor (2 wires) with multimeter? I have a hyundai santa fe 2006 with probably faulty oil level sensor

@Kiet-xp5lx Ай бұрын

I had this light flashing a few weeks ago now it’s blinking evertime when I turn on the engine could that issue also cause my car going into cog mode like running on survival mode idk the English term 😅

@laptopDoctorKZN 11 ай бұрын

Hi thanks for vida. How can I contact you

@FeeeshEP3 Жыл бұрын

Yup… have the same…

@gst_6377 Жыл бұрын

Currently about to do a n46 to m54 swap on mine any tips for removing the n64 engine?

@BimmerZen Жыл бұрын

I've never done a swap so I cant really help you, there are some good forum threads online that can help you.

@gst_6377 Жыл бұрын

@@BimmerZenhave you not removed an n42/46 engine but ?

@busa_rider_cy4012 Жыл бұрын

so is that the problem for low power? how much difference does it makes ?

@BimmerZen Жыл бұрын

To be honest, I did not notice any significant difference. Could be more noticeable in cold weather... I could not find any exact info on what changes are made to the engine operation but I'll look in to that since I am curious.

@philanxele7857 12 күн бұрын

@@BimmerZenGreat video, I have an N46 engine and I am getting a level sensor Inactive message

@tomekl119 Жыл бұрын

Hey. I know its not the best way to seek contact but im gonna try anyways. Got my n46b18 daily shitbox, running pretty decentish, recently did valve stem seals using your kit and fixed timing sińce even though it was recently replaced by some sorry ass mechanic, he failed balance shaft timing and engine had a lot of vibration. There is one issue i cant work out, other than that everything is super fine: very rough and noisy cold start and warm-up. After starting the engine it imediately starts to rattle badly and does so until temp needle leaves blue area. The moment warm-up ends, engine starts working fine. Tried unplugging valvetronic, Vanos solenoids and then doing the cold start, there seems to be no difference. Im running out of ideas. What could it be? Previous timing guides have disintegrated catastrophically, i found many pieces scattered around the engine. Cleaned everything up, but havent touched nonreturn valves between head and block (im trying to avoid removing the head). Any ideas by chance?

@gerardbelzen.v2288 Жыл бұрын

You got some plastic in your oil housing and wil not close. so all the oil drops back down

@gerardbelzen.v2288 Жыл бұрын

And wil rattle bad on cold start .don my car yesterday easy fix

@gerardbelzen.v2288 Жыл бұрын

Just remove the 3 bolts .and on the bottom of the oil housing you wil see the plastic stuk in the spring.

@tomekl119 Жыл бұрын

@@gerardbelzen.v2288 sadly that was the first thing i did and it did not fix the problem, although when i got the car it was in fact clogged with plastic debris.

@B.Zh.s 4 ай бұрын

why when you connected the new sensor and start the car the oil light didn't come on, the new sensor is hanging so should report "low level"?

@BimmerZen 4 ай бұрын

Its a complex thermal oil level sensor which means the oil has to reach certain temperature for it to read the oil level correctly. In my case it would eventually throw another error, but not right away.

@B.Zh.s 4 ай бұрын

@@BimmerZen useful info, thank you. 👍 When under normal conditions this sensor should show a "low level light" - when the oil reaches the minimum mark of the dipstick or should go lower than that? I also noticed on my e46 that i have no yellow light when starting the car - only the red one which immediately disappeared when the engine is started? ( cluster check from the "hidden menu" - all lights work including the yellow one )