[matuuu]

Hi.
Passat B8 2.0TDI 110kw 148hp.
Problem with egr or MAF?!
MAF changed but problem still excist.
Is this engine have 2 egr or not?
Im out of ideas.. MAF wires checked, EGR cleaned in the front of engine, but not sure if there is another one.
Is it possible to delete only EGR? Is it needed for dpf regen?

I have these fault codes:

  Address 01: Engine       Labels: 04L-907-309-V1.clb

Control Module Part Number: 04L 906 026 ET    HW: 04L 907 309 R
  Component and/or Version: R4 2.0l TDI   H22 1990
           Software Coding: 011D001204741D083000
            Work Shop Code: WSC 05311 115 00308
              ASAM Dataset: EV_ECM20TDI01104L906026ET 002002 (VW48)
                       ROD: EV_ECM20TDI01104L906026FL.rod
                      VCID: 000F35079B030A8BC3-8054
2 Faults Found:

4794 - Mass Air Flow Sensor (G70) 
          P0101 00 [237] - Implausible Signal
          MIL ON - Confirmed - Tested Since Memory Clear
             Freeze Frame:
                    Fault Status: 00000001
                    Fault Priority: 2
                    Fault Frequency: 1
                    Mileage: 239497 km
                    Date: 2022.06.23
                    Time: 15:17:17

                    Engine RPM: 1217.50 /min
                    Normed load value: 0.0 %
                    Vehicle speed: 59 km/h
                    Coolant temperature: 89 °C
                    Intake air temperature: 67 °C
                    Ambient air pressure: 1000 mbar
                    Voltage terminal 30: 14.840 V
                    Unlearning counter according OBD: 40
                    Mass airflow sensor 1 bank 1 airflow: raw value: 382.0 mg/stroke
                    Standardized airflow ratio: filtered: 1.2777
                    Exhaust recirc.valve 1 bank 1: posit.feedback - Actual value: 0.00 %
                    Throttl.valve adapt. 1 bank 1: posit feedback - Actual value: 0.00 %
                    Charge air pressure: specified value: 983 hPa
                    Charge air cooler inlet: pressure sensor 1 bank 1: raw value: 1057.0 hPa
                    Mean injection quantity: 0.00 mg/stroke

25221 - EGR System 
          P0402 00 [096] - Excessive Flow
          Intermittent - Not Confirmed - Tested Since Memory Clear
             Freeze Frame:
                    Fault Status: 00000001
                    Fault Priority: 2
                    Fault Frequency: 1
                    Mileage: 239926 km
                    Date: 2022.07.11
                    Time: 21:06:52

                    Engine RPM: 3547.00 /min
                    Normed load value: 99.6 %
                    Vehicle speed: 132 km/h
                    Coolant temperature: 88 °C
                    Intake air temperature: 133 °C
                    Ambient air pressure: 1000 mbar
                    Voltage terminal 30: 14.340 V
                    Unlearning counter according OBD: 32
                    EGR travel diagnosis: strongly increased NOx emission: 102.5 kg/h
                    Exhaust recirc.valve 1 bank 1: posit.feedback - Actual value: 0.92 %
                    EGR travel diagnosis: marginally increased NOx emission: 102.8 kg/h
                    Exhaust recirc.valve 2 bank 1: posit.feedback - Actual value: 0.01 %
                    Exh.recircul.valve 1 bank 1: pos.feedback - Actual value: 0.07 %
                    Pressure after throttle valve: calculated: -6.0 hPa
                    O2 sens. 1 bank 1 upstrm oxi cat: raw value: 1.0947

[paui]

Your Engine CRLB has 2 EGR. HP and LP
you need make dtcoff and disconnect the egr valves otherwise the regeneration not works

[matuuu]

Hi again.
Finnaly egr/dpf removed, fileservice sold me OFF file, almoust 2months without any problem and now still MAF fault.
Tuner not give advice.. 
Try to check MAF》Turbo pipe leaks, but maybe someone have good idea what to do.