B1B02-28 and B1C57-14 error code help

MikeHe · Sep 16, 2020

Does anyone know what these two lovely codes mean.

BCM
2.1. B1B02-28 Low frequency coil.
2.2. B1C57-14 Unused relay drive.

I've not found anything of use on them and it's the last time faults in the car to fix now.

sierrafery · Sep 17, 2020

Did you clear them and they keep coming back? if they were real and current the vehicle would not start...btw what modell and year is the disco ? did you try a hard reset ?

MikeHe · Sep 17, 2020

It's a 2006 D3 SE TDV6 and yeah cleared them 4 times now.

I'm afraid to do a hard reset as I'm sure that the last time I did it that caused my transfer case to loose it's calibration.

sierrafery · Sep 17, 2020

It's a quite common "bug" on D3s and RRSs, if the vehicle is starting and running in most cases a hard reset was the cure cos if it was something with the passive coil or relay the vehicle would not start but if you've had bad experience with the hard reset i have no other ideea

MikeHe · Sep 17, 2020

I will just leave them on the ECU, I'm happy it all works so that's good enough for me.

Thanks for the help.

Nodge68 · Sep 17, 2020

The D3 throws codes, just by starting it.

andyschleckscheshirecat · Sep 19, 2020

I have the B1C57 code as well

Difficult to clear by all accounts but doesn't cause any malfunction as far as I am aware

I am starting to forgot about mine now

B1B02-28 and B1C57-14 error code help

MikeHe

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sierrafery

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MikeHe

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sierrafery

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MikeHe

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Nodge68

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andyschleckscheshirecat

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