Just scanned my X5, need advice with a few fault
 

Just got my BMW scanner running and after fixing AUX Fan and cooling overhaul, decide to rescan the X. Got the following messages... I sometimes experience some type of vibration during acceleration, engine at idle is smooth. Everything seems fine except for the vibration... I am still trying to figure what to do. Please help if you have any insight.

In my DME Details, I have the following fault code
5A[090] Exhaust temperature before catalyst, bank 1, singal line, short circuit to negative
5B[091] Exhaust temperature before catalyst, bank 2, singal line, short circuit to negative
5D[093] Exhaust temperature after catalyst, bank 2, singal line, short circuit to negative
3F[063] Control unit self-test 3
53[083] Crankshaft sensor, no signal
3E[062] Solenoid valve, secondary air, short circuit to negative or open circuit

Then from my VTG [ Transfer Box], which sounds more scarier
54C6[21702] Oil abrasion

Thanks!

You can ignore these faults:

5A[090] Exhaust temperature before catalyst, bank 1, singal line, short circuit to negative
5B[091] Exhaust temperature before catalyst, bank 2, singal line, short circuit to negative
5D[093] Exhaust temperature after catalyst, bank 2, singal line, short circuit to negative

I think it in the software. Everyone that I know who uses BMW Scanner 1.4 has these faults.

Do you have a SES or CEL MIL light on? If you do I would look at this fault

53[083] Crankshaft sensor, no signal

The oil abrasion error is telling you to change the fluid in your transfer case. There's a sensor in there that is testing the properties of the fluid

After you change the special fluid there is a reset procedure for the transfer case.


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Is that the fifty dollar oil that I have to purchase from the dealer? Can I use the scanner to remove code? Or turning the steering wheel reset?

Funny thing about the crankshaft error is that there is no engine or ses light.

Yes - this is the magic oil. The error will disappear as soon as the sensor starts sampling the new fluid.


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I know what answer I am going to get... any replacement for that oil? LOL... BMW is making 10000% return on selling that oil...

I don't believe so. It's magic oil. Part #83220397244

I was able to get mine online (eBay or amazon? I don't remember) for a much better price

I changed it a few months ago and definitely notice much smoother action from the drivetrain. My old fluid was in pretty bad shape. Very dark and burned smelling.


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Reviving an old thread, but my errors are very similar...

The same O2 errors and I'm really wondering what's this Control Unit Self Test 3 error.

https://i.ibb.co/rtYPkM8/20220220-235153.jpg