I am a bit stumped - this error popped up but all the bulbs appear to be working ok - anyone know which bulb specifically this error refers to? (cleared it with obdeleven but it pops up again) Thanks

 

Trouble codes:
        B12D115 - Right turn signal light bulb Open circuit/short circuit to B+
            static
                Date: 2022-03-16 07:00:39
                Mileage: 92276 km
                Priority: 2
                Malfunction frequency counter: 1
                Unlearning counter: 61
                Terminal 15 status: On
                Terminal 50 status: Off
                Voltage: 11.6 V
                Outside air temperature: 3.5 °C
                Status Bremslichtschalter (HW): Off
                Status Bremslichtschalter (CAN): Off
                Off: not activated
                Parking light: not activated
                Automatic high beam assist: operated
                Low beam: not activated
                Parking light left: not activated
                Parking light right: not activated
                Letzte Weckursache/ Werte [00;2E]: keine Störschutzursache
                CAN-Bus_aktiv: On

 

In my experience If your getting a bulb warning if the bulb hasn't failed it is going to do at some point. But you could be waiting a long time before it does. 

 

You've posted "Right turn signal light bulb Open circuit/short circuit" so the filament has probably broken in which ever right hand side bulb it is and is making an intermittent contact.

 

I'd change the indicator bulbs one at a time starting with the easiest one to get. Rear light cluster 1st?

It may not be the bulb-

 

so it's an intermittant fault and it shouldn't be the rear as I already changed them to LED bulbs a while back. 

This fitting guide thread has given me the courage to go ahead and order some more LED bulbs and the replacement indicator cap pack plus a few odds n ends to tackle this upgrade that will hopefully sort the error code!

1 hour ago, encephalopathy said:

so it's an intermittant fault and it shouldn't be the rear as I already changed them to LED bulbs a while back. 

This fitting guide thread has given me the courage to go ahead and order some more LED bulbs and the replacement indicator cap pack plus a few odds n ends to tackle this upgrade that will hopefully sort the error code!

Has the problem occurred since you changed to LED bulbs? I suspect that's the cause of your problem. So called error free CANBUS LED'S set the bulb warning ⚠️  light off on my Superb. If you read all the LED CANBUS error free light listings say they are not guaranteed not to set the bulb warning off on all cars.  

 

On my Superb  couldn't be arsed with all the extra cost and hassle of buying and fitting  resistors which are likely to get very hot. I went back to standard feston bulbs for the number plate.

These are the sort of resistors you need to use when using LED's to stop fast flashing or bulb warning lights issues.

 

https://www.ebay.co.uk/itm/363671891489?hash=item54ac88ae21:g:kPIAAOSw~nhiC0iM