Citroen C3 2021 P02ED P00BC

Dear Citroen experts,
this Citroen C3 year 2021 engine DV15RB (YHY) 1499cc 75kW diesel
throw
P02ED Induction circuit: Air flow higher than the theoretical air flow
P00BC Induction circuit: Air flow lower than the theoretical air flow. Circuit A

as stored DTC.

The live data at idle varies from 320 mg/strk to -2789 mg/strk.

Is it normal to have a negative value?

Car drive fine.