Hi

After trying to reset my ECU through Fiatecuscan with the following faults:-

01 - Control unit fault

02 - ECU Supply Voltage

I believe it means a change of the airbag ecu, but I am unsure which number is used to determine I get the right one.

On the airbag it has 550 90 34 00 and the number on the barcode is
51705343.

I have seen a few on ebay but was unsure which one is correct.

Thank-you for your time

Hi
It's me again

To get a replacement airbag ECU for a Doblo, do both the serial numbers have to match. For instance does the replacement ECU just have to be 550 90 34 00 and can the bar-code number be different or does it have to be the same.

Thank-you

51705343 is the part number but it will be likely this number is old and superseded so you might have to ask at local dealership.

Are you sure the ecu is at fault as they are normally very reliable and might just need reset or water from the heater matrix connections has leaked onto the ecu connector.

PLEASE be careful when working on airbag systems

Hi

Thankyou for your reply.

FiatECU is recognising the ECU but is coming up with 2 faults : Control unit fault and Low voltage. I have tried to clear the faults but they keep coming back.

Thanks