Hi I have a 2007 pd 170 and the cel light has come on Iv reset it but after about 20 miles it comes back on iv scanned it with vag com and these faults come up.

Can someone shed a bit of light on whats going on

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Address 01: Engine Labels: REDIR FAIL!
Control Module Part Number: 03G 906 018 DT HW: 03G 906 018 DT
Component and/or Version: R4 2.0l PPD1.2 G 0431
Software Coding: 0050072
Work Shop Code: WSC 66565 257 00032
4 Faults Found:
000257 - Mass Air Flow Sensor (G70): Implausible Signal
P0101 - 006 - Short to Plus - Intermittent - MIL ON
Freeze Frame:
Fault Status: 10100001
Fault Priority: 1
Fault Frequency: 5
Reset counter: 40
Mileage: 61904 km
Time Indication: 0
Date: 2000.00.00
Time: 12:57:20
Freeze Frame:
RPM: 1568 /min
Torque: 0.0 Nm
Speed: 82.0 km/h
Temperature: 15.0C
Pressure: 1107.6 mbar
Text: 0
Text: kg/h
000258 - Mass Air Flow Sensor (G70): Signal too Low
P0102 - 007 - Short to Ground - Intermittent
Freeze Frame:
Fault Status: 00000010
Fault Priority: 5
Fault Frequency: 1
Reset counter: 39
Mileage: 61906 km
Time Indication: 0
Date: 2000.00.00
Time: 12:59:29
Freeze Frame:
Text:
Torque: 40.0 Nm
Speed: 0.0 km/h
0.00 %
Voltage: 13.90 V
Mass Air / Rev.: 277.9 mg/str
Mass Air / Rev.: 0.0 mg/str
001026 - EGR System: Excessive Flow
P0402 - 006 - Short to Plus - Intermittent
Freeze Frame:
Fault Status: 00000001
Fault Priority: 1
Fault Frequency: 2
Reset counter: 40
Mileage: 61959 km
Time Indication: 0
Date: 2000.00.00
Time: 17:37:14
Freeze Frame:
RPM: 1952 /min
Torque: 96.0 Nm
Speed: 103.0 km/h
0.00 %
95.55 %
Mass Air / Rev.: 403.3 mg/str
Mass Air / Rev.: 0.0 mg/str
000579 - Solenoid Valve for Boost Pressure Control (N75): Malfunction
P0243 - 009 - Open or Short to Ground - Intermittent
Freeze Frame:
Fault Status: 00000100
Fault Priority: 5
Fault Frequency: 1
Reset counter: 39
Mileage: 61953 km
Time Indication: 0
Date: 2000.00.00
Time: 15:43:16
Freeze Frame:
RPM: 736 /min
Torque: 32.0 Nm
Speed: 0.0 km/h
0.00 %
Voltage: 13.90 V
Pressure: 1043.7 mbar
Pressure: 979.8 mbar

Readiness: N/A

Any advise would be apreicated

cheers ash101