Hey there, had the warning light come on today and ran it through a scanner.

It comes back with P0684 code, glow plug control module to pcm communication error.

I've had a quick search and it seems that the relay needs replacing.

Is it that simple? Or could it be a more sinister/ expensive problem.

Also, where's best to buy a replacement from.

It's a 2019 2.0d technology.

OEM first pic, replaced with Bosch aftermarket part number 2nd pic