Different software shows different fault codes

678hug · 10-05-2023, 10:34 AM

Hi all,
I had my F48 head unit replaced to get Apple CarPlay using a very highly recommended person from a forum. He was very good and all worked well.

The only thing is DAB reception is worse than i thought it would be with a lot of cutting out. I'm used to BMW's and I know it isn't perfect at the best of times. It just seems to lose national stations on major motorways and local stations in my local area.

It may have been like that before the head unit change, but i only had the car a week before replacement so can't be sure.

Anyway, it's not the end of the world but i did decided to use E-sys and BimmerUtility to check for fault codes.

BU shows B7F805 - DAB L band antenna fault and E1C448 MOST - current configuration incomplete. Great, i thought, loose / dirty antenna connection on the Head Unit

I erased them and the E1C448 disappears but then returns. The B7F805 never erases.

The thing is, I cannot see these faults on E-sys and have also tried erasing all faults (not that it shows any) on e-sys transmitter. They still show up on BU.

I then moved to ISTA which again shows no related faults.

The only fault code is to do with the TRSVC system which i do not have (only the reverse cam) and that has a date of yesterday so is not related.

I've attached the ISTA screen (no related faults) and the BU screen (2 faults) so you can see what I mean.

Any ideas please? Why would a fault be logged on BimmerUtility and not on e-sys or ISTA?

Homersbud · 10-05-2023, 01:40 PM

why are you using esys/BU for error codes? Those apps are used for coding.

If ISTA shows nothing, then trust that as ISTA is used for diagnostic.

678hug · 10-05-2023, 03:58 PM

Because I was coding when i noticed them. I do trust ISTA.
Was merely asking if anyone had any idea why 2 different bits of software would show 2 different sets of results.

Homersbud · 10-05-2023, 04:36 PM

they are both completely different software. can’t compare apples to oranges why one app shows one thing and another shows another when neither can do the same thing.

678hug · 10-06-2023, 11:38 AM

The photos above show they can both read DTC's and Erase DTC's

10-05-2023, 10:34 AM	#1
678hug Enlisted Member 12 Rep 34 Posts Drives: F48 2.0i XLine Join Date: May 2018 Location: UK iTrader: (0)	Different software shows different fault codes Hi all, I had my F48 head unit replaced to get Apple CarPlay using a very highly recommended person from a forum. He was very good and all worked well. The only thing is DAB reception is worse than i thought it would be with a lot of cutting out. I'm used to BMW's and I know it isn't perfect at the best of times. It just seems to lose national stations on major motorways and local stations in my local area. It may have been like that before the head unit change, but i only had the car a week before replacement so can't be sure. Anyway, it's not the end of the world but i did decided to use E-sys and BimmerUtility to check for fault codes. BU shows B7F805 - DAB L band antenna fault and E1C448 MOST - current configuration incomplete. Great, i thought, loose / dirty antenna connection on the Head Unit I erased them and the E1C448 disappears but then returns. The B7F805 never erases. The thing is, I cannot see these faults on E-sys and have also tried erasing all faults (not that it shows any) on e-sys transmitter. They still show up on BU. I then moved to ISTA which again shows no related faults. The only fault code is to do with the TRSVC system which i do not have (only the reverse cam) and that has a date of yesterday so is not related. I've attached the ISTA screen (no related faults) and the BU screen (2 faults) so you can see what I mean. Any ideas please? Why would a fault be logged on BimmerUtility and not on e-sys or ISTA? Last edited by 678hug; 10-05-2023 at 12:29 PM..
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10-05-2023, 01:40 PM	#2
Homersbud Captain 202 Rep 800 Posts Drives: BMW X1 Join Date: Mar 2020 Location: Chicago iTrader: (0)	why are you using esys/BU for error codes? Those apps are used for coding. If ISTA shows nothing, then trust that as ISTA is used for diagnostic.
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10-05-2023, 03:58 PM	#3
678hug Enlisted Member 12 Rep 34 Posts Drives: F48 2.0i XLine Join Date: May 2018 Location: UK iTrader: (0)	Because I was coding when i noticed them. I do trust ISTA. Was merely asking if anyone had any idea why 2 different bits of software would show 2 different sets of results. Last edited by 678hug; 10-05-2023 at 04:20 PM..
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10-05-2023, 04:36 PM	#4
Homersbud Captain 202 Rep 800 Posts Drives: BMW X1 Join Date: Mar 2020 Location: Chicago iTrader: (0)	they are both completely different software. can’t compare apples to oranges why one app shows one thing and another shows another when neither can do the same thing.
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10-06-2023, 11:38 AM	#5
678hug Enlisted Member 12 Rep 34 Posts Drives: F48 2.0i XLine Join Date: May 2018 Location: UK iTrader: (0)	The photos above show they can both read DTC's and Erase DTC's
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