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I'm trying to fix my 08 Passat, the check engine light and EPC lights are on. I've replaced the HPFP and fuel pressure sensor, but it is still running in limp mode.

I'm getting these codes, could it be the mass airflow sensor causing all the codes and the engine to misfire? Thanks.

Address 01: Engine Labels:. 06F-907-115-AXX.clb
Part No SW: 3C0 907 115 S HW: 8P0 907 115 B
Component: 2.0l R4/4V TFSI 0020
Revision: 5BH16--- Serial number: VWZCZ000000000
Coding: 0404010A19070160
Shop #: WSC 00028 028 00001
VCID: 30391D6F46251FFB573-8064
VINID: 9E69D56C90D32488001071410416DD7AA8

9 Faults Found:
008852 - Fuel Pressure Regulator Valve (N276)
P2294 - 004 - Open Circuit - Intermittent - MIL ON
Freeze Frame:
Fault Status: 10100100
Fault Priority: 2
Fault Frequency: 6
Reset counter: 255
Mileage: 357216 km
Time Indication: 0
Date: 2022.09.04
Time: 17:12:45

Freeze Frame:
RPM: 765 /min
Load: 14.9 %
Speed: 0.0 km/h
Temperature: 102.0°C
Temperature: 57.0°C
Absolute Pres.: 970.0 mbar
Voltage: 13.843 V

008825 - Leak in Air Intake System
P2279 - 002 - - MIL ON
Freeze Frame:
Fault Status: 11100010
Fault Priority: 2
Fault Frequency: 1
Reset counter: 255
Mileage: 357216 km
Time Indication: 0
Date: 2022.09.04
Time: 17:13:15

Freeze Frame:
RPM: 767 /min
Load: 18.4 %
Speed: 0.0 km/h
Temperature: 101.0°C
Temperature: 57.0°C
Absolute Pres.: 970.0 mbar
Voltage: 13.589 V

008567 - Bank 1; System Too Lean off Idle
P2177 - 001 - - MIL ON
Freeze Frame:
Fault Status: 11100001
Fault Priority: 2
Fault Frequency: 1
Reset counter: 255
Mileage: 357216 km
Time Indication: 0
Date: 2022.09.04
Time: 17:16:48

Freeze Frame:
RPM: 769 /min
Load: 22.7 %
Speed: 0.0 km/h
Temperature: 94.0°C
Temperature: 46.0°C
Absolute Pres.: 970.0 mbar
Voltage: 13.335 V

000768 - Random/Multiple Cylinder Misfire Detected
P0300 - 008 - - Intermittent - MIL ON
Freeze Frame:
Fault Status: 10101000
Fault Priority: 2
Fault Frequency: 2
Reset counter: 255
Mileage: 357297 km
Time Indication: 0
Date: 2022.09.06
Time: 23:10:30

Freeze Frame:
RPM: 1092 /min
Load: 58.4 %
Speed: 0.0 km/h
Temperature: 18.0°C
Temperature: 21.0°C
Absolute Pres.: 980.0 mbar
Voltage: 14.224 V

000769 - Cylinder 1
P0301 - 008 - Misfire Detected - Intermittent
Freeze Frame:
Fault Status: 00101000
Fault Priority: 2
Fault Frequency: 1
Reset counter: 255
Mileage: 357297 km
Time Indication: 0
Date: 2022.09.06
Time: 23:11:17

Freeze Frame:
RPM: 1724 /min
Load: 21.2 %
Speed: 22.0 km/h
Temperature: 27.0°C
Temperature: 16.0°C
Absolute Pres.: 980.0 mbar
Voltage: 14.478 V

000772 - Cylinder 4
P0304 - 008 - Misfire Detected - Intermittent - MIL ON
Freeze Frame:
Fault Status: 10101000
Fault Priority: 2
Fault Frequency: 1
Reset counter: 255
Mileage: 357297 km
Time Indication: 0
Date: 2022.09.06
Time: 23:11:17

Freeze Frame:
RPM: 1724 /min
Load: 21.2 %
Speed: 22.0 km/h
Temperature: 27.0°C
Temperature: 16.0°C
Absolute Pres.: 980.0 mbar
Voltage: 14.478 V

000770 - Cylinder 2
P0302 - 008 - Misfire Detected - Intermittent - MIL ON
Freeze Frame:
Fault Status: 10101000
Fault Priority: 2
Fault Frequency: 2
Reset counter: 255
Mileage: 357307 km
Time Indication: 0
Date: 2022.09.07
Time: 08:51:19

Freeze Frame:
RPM: 971 /min
Load: 21.2 %
Speed: 0.0 km/h
Temperature: 31.0°C
Temperature: 18.0°C
Absolute Pres.: 980.0 mbar
Voltage: 14.224 V

000771 - Cylinder 3
P0303 - 008 - Misfire Detected - Intermittent
Freeze Frame:
Fault Status: 00101000
Fault Priority: 2
Fault Frequency: 1
Reset counter: 255
Mileage: 357307 km
Time Indication: 0
Date: 2022.09.07
Time: 13:31:33

Freeze Frame:
RPM: 1188 /min
Load: 29.8 %
Speed: 0.0 km/h
Temperature: 33.0°C
Temperature: 25.0°C
Absolute Pres.: 980.0 mbar
Voltage: 14.224 V

000256 - Mass Air Flow Sensor (G70)
P0100 - 004 - Supply Voltage - Intermittent
Freeze Frame:
Fault Status: 00100100
Fault Priority: 2
Fault Frequency: 1
Reset counter: 255
Mileage: 357362 km
Time Indication: 0

Freeze Frame:
RPM: 180 /min
Load: 100.0 %
Speed: 0.0 km/h
Temperature: 51.0°C
Temperature: 36.0°C
Absolute Pres.: 970.0 mbar
Voltage: 10.033 V

Readiness: 0000 0001
 

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With all respect It could have been a loose fuel cap. Thats the code I got. I tightended the fuel cap and 2 00 miles later the check engine light turned off. I tried everything short of going to the dealership and that was what it was. problem solved. either way if that doesnt work then take it to a pro. keep us updated.
 
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