hey guys tring to figure out a problem here, have epc appearing only on a few startups and always the same codes comming out. i know its not the individual sensors in these codes and i already changed the mass air flow. now since it is only on start ups i was thinking maybe a fuel problem that causes all these codes on start ups. any ideas

001092 - EVAP Purge Control Valve (N80): Circuit Open
P0444 - 004 - No Signal/Communication - Intermittent - MIL ON
Freeze Frame:
Fault Status: 10100100
Fault Priority: 0
Fault Frequency: 72
Mileage: 109270 km
Time Indication: 0

Freeze Frame:
RPM: 650 /min
Load: 44.7 %
Speed: 0.0 km/h
Temperature: 78.0°C
Temperature: 75.0°C
Absolute Pres.: 1000.0 mbar
Voltage: 11.557 V

000051 - Turbocharger Bypass Valve Control Circuit: Malfunction / Open Circuit
P0033 - 004 - No Signal/Communication - Intermittent
Freeze Frame:
Fault Status: 00100100
Fault Priority: 0
Fault Frequency: 72
Mileage: 109270 km
Time Indication: 0

Freeze Frame:
RPM: 869 /min
Load: 37.6 %
Speed: 0.0 km/h
Temperature: 79.0°C
Temperature: 73.0°C
Absolute Pres.: 1000.0 mbar
Voltage: 12.065 V

000579 - Solenoid Valve for Boost Pressure Control (N75): Malfunction
P0243 - 004 - No Signal/Communication - Intermittent - MIL ON
Freeze Frame:
Fault Status: 10100100
Fault Priority: 0
Fault Frequency: 72
Mileage: 109270 km
Time Indication: 0

Freeze Frame:
RPM: 650 /min
Load: 44.7 %
Speed: 0.0 km/h
Temperature: 78.0°C
Temperature: 75.0°C
Absolute Pres.: 1000.0 mbar
Voltage: 11.557 V

005491 - Left Engine Mount Solenoid Valve (N144): Open Circuit
P1573 - 004 - No Signal/Communication - Intermittent
Freeze Frame:
Fault Status: 00100100
Fault Priority: 0
Fault Frequency: 69
Mileage: 109270 km
Time Indication: 0

Freeze Frame:
RPM: 869 /min
Load: 37.6 %
Speed: 0.0 km/h
Temperature: 79.0°C
Temperature: 73.0°C
Absolute Pres.: 1000.0 mbar
Voltage: 12.065 V

008852 - Fuel Pressure Regulator Valve (N276): Open Circuit
P2294 - 004 - No Signal/Communication - Intermittent
Freeze Frame:
Fault Status: 00100100
Fault Priority: 0
Fault Frequency: 49
Mileage: 109270 km
Time Indication: 0

Freeze Frame:
RPM: 1121 /min
Load: 23.5 %
Speed: 0.0 km/h
Temperature: 78.0°C
Temperature: 73.0°C
Absolute Pres.: 1000.0 mbar
Voltage: 11.684 V

009216 - EVAP Leak Detection Pump Control Circuit: Malfunction
P2400 - 004 - No Signal/Communication - Intermittent - MIL ON
Freeze Frame:
Fault Status: 10100100
Fault Priority: 0
Fault Frequency: 54
Mileage: 109270 km
Time Indication: 0

Freeze Frame:
RPM: 1193 /min
Load: 22.7 %
Speed: 0.0 km/h
Temperature: 78.0°C
Temperature: 72.0°C
Absolute Pres.: 1000.0 mbar
Voltage: 11.938 V


000049 - Oxygen (Lambda) Sensor B1 S1: Heating Circuit: Short to Ground
P0031 - 002 - Lower Limit Exceeded - Intermittent
Freeze Frame:
Fault Status: 00100010
Fault Priority: 0
Fault Frequency: 11
Mileage: 109270 km
Time Indication: 0

Freeze Frame:
RPM: 846 /min
Load: 23.9 %
Speed: 0.0 km/h
Temperature: 78.0°C
Temperature: 52.0°C
Absolute Pres.: 1010.0 mbar
Voltage: 13.589 V

000054 - Oxygen (Lambda) Sensor B1 S2: Heating Circuit: Malfunction / Open Circuit
P0036 - 004 - No Signal/Communication - Intermittent
Freeze Frame:
Fault Status: 00100100
Fault Priority: 0
Fault Frequency: 11
Mileage: 109270 km
Time Indication: 0

Freeze Frame:
RPM: 743 /min
Load: 27.4 %
Speed: 2.0 km/h
Temperature: 80.0°C
Temperature: 49.0°C
Absolute Pres.: 1010.0 mbar
Voltage: 13.589 V

012555 - Low Pressure Fuel regulation: Fuel Pressure Outside Specification
P310B - 004 - No Signal/Communication - Intermittent
Freeze Frame:
Fault Status: 00100100
Fault Priority: 0
Fault Frequency: 7
Mileage: 109441 km
Time Indication: 0

Freeze Frame:
RPM: 774 /min
Load: 32.5 %
Speed: 0.0 km/h
Temperature: 91.0°C
Temperature: 44.0°C
Absolute Pres.: 1010.0 mbar
Voltage: 13.462 V


Readiness: 0000 0000

 

oh ya and this one
1 Fault Found:
006231 - Load Signal: Error Message from ECU
P1857 - 001 - Upper Limit Exceeded - Intermittent
Freeze Frame:
Fault Status: 00100001
Fault Priority: 0
Fault Frequency: 22
Mileage: 0 km
Time Indication: 0

Freeze Frame:
RPM: 736 /min
RPM: 736 /min
RPM: 0 /min
(no units): 30.0
(no units): 26.0
Temperature: 56.0°C

 

well, not sure if this helps, but since you think its a fuel problem, when I bought my 2007 b7, the epc light came on at the dealership, so I made them check it for free, turned out that they didn't screw the fuel cap all the way in when they put gas in it for me, tripping the epc light...maybe, just maybe its something that simple? other than that, that's all i can offer for advice

 

Not likely with those faults.

You need a diverter valve and a fuel pressure sender from the 24T4 RVU.

Thats for starters. You also have an EVAP issue, which other than replacing the purge valve and hoping for the best, you need someone who knows how to test and smoke the system for leaks.

 

thanks for the imput i will have to check it out, i checked relays under ecu and they looked off made an adjustment and havent seen the light in 2 days, will see what happens

 

How did´t go so far? I have the same problem. Did you addjuste the relays only or you did something more?

 

relays worked