First time scanning for codes using BMW Scanner, need some clarification...
 

Hello everyone!

I finally got my BMW Scanner 1.4 adapter! Had to do some soldering of pins to get it to work correctly, but all is well now and the software is working perfectly, and has found some errors that I need a little help understanding.

# ERRORS DETAILS - DTC(hex)/PARAM(hex)
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A/C -> 0A/44 - AUC sensor

SRS -> 11/A0 - Power supply
F0/80 - Internal control unit fault
12/88 - Fault lamp (AWL)
05/40 - Side airbag, front left

LCM -> 17/01 - Wire, dimmer potentiometer, open circuit
28/01 - Thermal oil-level sensor defect

ZKE -> 5A/21 - Central locking mechanism broken, passenger's door

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As for the first error, I'm pretty sure that the AUC sensor that is attached to the radiator fan shroud is simply defective and needs replacing. When I did my radiator replacement about 6 months ago, I noticed that the AUC sensor was unplugged (probably because the previous owner determined it was defective and just unplugged it) But being the persistent man I am, I thought maybe it just needed a good cleaning, so i took it out, removed the extremely nasty and degraded little filter that was in it, replaced with a similar filter i had for my fish tank, and lightly air compressed the sensor to try to clean it off. Plugged it back in, but I am still getting this error. Even after clearing it and running the car for a couple days with the automatic recirc function on, the code still comes back. So, easy fix hopefully, just replace the sensor. Not to worried about this one, but it is nice to have the car just automatically turn on the recirculation if I get stuck behind a nasty diesel in traffic.

The second SRS set of errors and the LCM errors are my main concerns.

When I first bought the car, the airbag light was not on in my dash. The drivers door handle was broken and would not open from the outside, so as part of my "deal" they said they'd replace it and have me come back in get it fixed. After I got it back from them, and started the car, the airbag light came on, and stayed on, and has been on ever since. I took it back to them explaining that the airbag light came on after they replaced the door handle, but they couldn't offer me any help, even after doing their own scan and seeing the errors. So, I just decided to "live" with it. But now, I feel like i should probably get these errors fixed. Seems to me like they disconnected the door airbag cable while the battery was still hooked up, hence the SIDE AIRBAG, FRONT LEFT error. I have attempted to clear the errors, but have not had any success. The codes dont show up as RED, they show YELLOW, so that makes me think they're just stuck in shadow memory, and need to be properly cleared, but I am unsure of the procedure to do so, as normal clearing of the errors does not work.

Now for the LCM errors.

17/01 - Wire, dimmer potentiometer, open circuit

My dimmer on my dashboard does NOT work. I have installed an aftermarket Seicane head unit, and I'm assuming that is why I'm getting this error, as the head unit now controls the dash lighting. I haven't confirmed this is the reason for this code, I imagine an easy way to see if its the head units fault is to unplug the head unit and see if the dimmer on my dash works, which I'm assuming will be the case. So, in conclusion, this makes me think that their is something funny with the wiring for my head unit, and it may need altered to get rid of this error. Is it possible to still have the dimmer on the light switch work and also have the head unit control dash lighting? Also want to note that when I get out of the car and touch the drivers door, i almost always get a very noticeable discharge of static electricity.

28/01 - Thermal oil-level sensor defect

I'm just gonna assume after almost 20 years of abuse, this sensor just needs replacing as well. Anyone have any good recommendations or links to good deals on these sensors?

Any help or feedback is greatly appreciated! Stay safe out there everyone!

Your airbag sensor is most likely from some slipknot unplugging the airbag in the door with the battery connected which will give you that particular error (clearing it) after disconnecting the battery and putting the + and - cables together will clear it up unless you really do have an airbag problem or it's still disconnected....

Thermal oil sensor is a common failure and surprisingly one failure I haven't had (yet)[emoji1696]

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LMAO Slipknot....yea he was definitely that..... lol

So for an easy first attempt to fix it, all I need to do is disconnect both the positive and negative cable from the battery and touch them together briefly? Then hook it back up, and scan for the errors again? And if i find errors again, somethings either unplugged still, or something is defective.

Did you clear the codes and then re-check to see which ones came back.That's where I'd start.Record the codes,clear them and then road test to see what reappears.After that I would check schematics to see if they all have something in common.Only then would I look at them individually.

Yes, I did clear the codes and checked to see which ones came back, and thats what I'm posting about, is the codes that still remained after i cleared and did a couple days of driving.

Almost.... after unplugging and then hooking everything up scan and clear each code individually and then see if it comes back and if it does then.... We'll go from there [emoji106]

This is why on the airbag the whole battery deal is in there... (at least for me)


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Sounds like a plan, I'll report back after doing what you suggested. Thank you for the recommendation!

The air bag light was probably caused by unplugging the air bag module without disconnecting the battery. You should be able to reset this code. If not, you may coincidentally have a bad air bag module. I had the module in my steering wheel go bad. Found a good used one on ebay.

I have an AVIN Avant 4 head unit with the IBUS module. When running a scan it throws all kinds of errors, probably because of the IBUS app. Just a guess.

I was getting a code on and off for the thermal oil level sensor as well. Recently replaced that. Bought the replacement from FCP Euro which is where I now buy all my parts thanks to their lifetime warranty. I've had to make use of the warranty a few times and they will take back parts and refund what you paid no questions asked. They will even do it for oil and filters. After you buy a replacement from them, of course. Have done this with O2 sensors and am about to do it with a thermostat that has gone bad.

Good luck!

Also just wanted to note to that I took my X5 to the dealership in Spokane, WA for a recall on my steering wheel airbag May of 2019, and when they scanned the car for errors, they told me that there was a fault in the passengers seat sensor. But I don't see that error here.

Yea, i noticed the scan threw a bunch of errors as well for my navigation, phone, all that stuff. I also have the IBUS adapter. The first test i did, the head unit had not initialized the IBUS adapter yet, and the scan did not find any modules for nav, tel, etc. But once the IBUS adapter started with the app, it threw out all sorts of errors.

I haven't purchased from FCP Euro, but since you state they have a lifetime warranty, I might look into them. Thanks for the suggestions!