F82 Unusual Error Codes (P244A / P2464)

[M4OH]

F82 Nov 2019, 5900 miles total with around 2500 in my ownership.

Today I got an EML come on after a longish drive so I read the fault codes using the 'Torque' mobile phone app with blue tooth dongle. It listed the below codes:

P244A - Powertrain
P2464 - Powertrain

Googling these comes up with:
P244A - Diesel Particulate Filter Differential Pressure Too Low Bank 1
P2464 - Diesel Particulate Filter Differential Pressure Too Low Bank 2

I'm pretty sure I wasn't sold a diesel in disguise so not sure if these are an issue with the app or BMW reusing / using slightly wrong codes on the latter OPF cars. The fact the two codes are the same error makes me believe it isn't a random read error by the app and it probably refers to the OPF sensors?

Has anyone had a similar EML issue and what could be the cause on such a low milage car? I read the fault as there not being enough of a pressure drop through the OPF so it believes it is faulty /missing? The car still drives fine and as far as I know is 100% standard, though I haven't visually inspected underneath.