Driving to work this morning and my EPC light came on. Car became a little sluggish in changing gears...it is a CVT. Came home this afternoon and EPC light was still on, but no performance issues. Here is what the VAG-COM has....any ideas really appreciated.

6 Faults Found:
001092 - EVAP Purge Control Valve (N80)
P0444 - 004 - Circuit Open - Intermittent
Freeze Frame:
Fault Status: 00100100
Fault Priority: 0
Fault Frequency: 1
Mileage: 155584 km
Time Indication: 0

Freeze Frame:
RPM: 1021 /min
Load: 41.9 %
Speed: 0.0 km/h
Temperature: 93.0°C
Temperature: 36.0°C
Absolute Pres.: 970.0 mbar
Voltage: 12.192 V

000051 - Turbocharger Bypass Valve Control Circuit
P0033 - 004 - Malfunction / Open Circuit - Intermittent
Freeze Frame:
Fault Status: 00100100
Fault Priority: 0
Fault Frequency: 1
Mileage: 155584 km
Time Indication: 0

Freeze Frame:
RPM: 1021 /min
Load: 41.9 %
Speed: 0.0 km/h
Temperature: 93.0°C
Temperature: 36.0°C
Absolute Pres.: 970.0 mbar
Voltage: 12.192 V

000579 - Solenoid Valve for Boost Pressure Control (N75)
P0243 - 004 - Malfunction - Intermittent
Freeze Frame:
Fault Status: 00100100
Fault Priority: 0
Fault Frequency: 1
Mileage: 155584 km
Time Indication: 0

Freeze Frame:
RPM: 1021 /min
Load: 41.9 %
Speed: 0.0 km/h
Temperature: 93.0°C
Temperature: 36.0°C
Absolute Pres.: 970.0 mbar
Voltage: 12.192 V

008852 - Fuel Pressure Regulator Valve (N276)
P2294 - 004 - Open Circuit - Intermittent
Freeze Frame:
Fault Status: 00100100
Fault Priority: 0
Fault Frequency: 1
Mileage: 155584 km
Time Indication: 0

Freeze Frame:
RPM: 1174 /min
Load: 22.7 %
Speed: 0.0 km/h
Temperature: 93.0°C
Temperature: 35.0°C
Absolute Pres.: 970.0 mbar
Voltage: 12.192 V

009216 - EVAP Leak Detection Pump Control Circuit
P2400 - 004 - Malfunction - Intermittent
Freeze Frame:
Fault Status: 00100100
Fault Priority: 0
Fault Frequency: 1
Mileage: 155584 km
Time Indication: 0

Freeze Frame:
RPM: 1173 /min
Load: 22.7 %
Speed: 0.0 km/h
Temperature: 93.0°C
Temperature: 34.0°C
Absolute Pres.: 970.0 mbar
Voltage: 11.938 V

012555 - Low Pressure Fuel regulation
P310B - 004 - Fuel Pressure Outside Specification - Intermittent
Freeze Frame:
Fault Status: 00100100
Fault Priority: 0
Fault Frequency: 1
Mileage: 155586 km
Time Indication: 0

Freeze Frame:
RPM: 1458 /min
Load: 37.6 %
Speed: 65.0 km/h
Temperature: 93.0°C
Temperature: 29.0°C
Absolute Pres.: 970.0 mbar
Voltage: 13.843 V

 

Just a thought here, but I'm not sure I can relate all of these errors to a common cause. I noticed that the VAG-COM indicates that the battery voltage was 12.192. That seems low to me. Could all of these errors maybe be caused by low battery voltage?

 

there would be other ECM faults for loss of power and communication, the ESP light would be on for steering angle sensor.

I'd delete all these faults and drive it and see what comes back. because according to this there is 5 or 6 different issues

 

Thanks Audi Tek for responding. I cleared the faults yesterday. Drove about 20mi this morning. Brake sensor came on, but no EPC. I figure it was needing pads anyway. Got them on order. I'm planning on pulling the HPFP next week and put in a new cam follower if I have the guts. Not a 100% sure about the difficulty, but will give it a shot. I don't think mine has the banjo bolt, so maybe not as difficult to get to. I recently replaced the N80 valve and that fixed one of the faults I previously had. The valve was definitely bad.

 

It has been a little over a year since I have had EPC problems. Occasionally, it will come on, but a shutdown/restart clears it out. Last night, it became more difficult. It was about 30deg outside and after several restarts, it still did not clear. Decided to drive it a few miles to warm up further. This time it cleared after driving a couple of miles in limp mode. Certainly looking for any ideas on what would cause this. I replaced the N80 valve last year, but would not think it would cause all of these other error codes. Here is the info from vag-com. Any help greatly appreciated!

Address 01: Engine Labels: 06F-907-115-AXX.lbl
Part No SW: 8E0 910 115 P HW: 8E0 907 115 D
Component: 2.0l R4/4V TFSI 0020
Revision: 5EH14--- Serial number:
Coding: 0104010A02070120
Shop #: WSC 22198 444 84161
VCID: 2E591246B9695E6E36F-807B

6 Faults Found:
000579 - Solenoid Valve for Boost Pressure Control (N75)
P0243 - 004 - Malfunction - Intermittent - MIL ON
Freeze Frame:
Fault Status: 10100100
Fault Priority: 0
Fault Frequency: 22
Reset counter: 255
Mileage: 214138 km
Time Indication: 0

Freeze Frame:
RPM: 1110 /min
Load: 34.9 %
Speed: 0.0 km/h
Temperature: 72.0°C
Temperature: 65.0°C
Absolute Pres.: 990.0 mbar
Voltage: 11.430 V

001092 - EVAP Purge Control Valve (N80)
P0444 - 004 - Circuit Open - Intermittent - MIL ON
Freeze Frame:
Fault Status: 10100100
Fault Priority: 0
Fault Frequency: 19
Reset counter: 255
Mileage: 214160 km
Time Indication: 0

Freeze Frame:
RPM: 217 /min
Load: 71.3 %
Speed: 0.0 km/h
Temperature: 26.0°C
Temperature: 27.0°C
Absolute Pres.: 990.0 mbar
Voltage: 11.176 V

000051 - Turbocharger Bypass Valve Control Circuit
P0033 - 004 - Malfunction / Open Circuit - Intermittent
Freeze Frame:
Fault Status: 00100100
Fault Priority: 0
Fault Frequency: 19
Reset counter: 255
Mileage: 214160 km
Time Indication: 0

Freeze Frame:
RPM: 234 /min
Load: 67.0 %
Speed: 0.0 km/h
Temperature: 54.0°C
Temperature: 16.0°C
Absolute Pres.: 990.0 mbar
Voltage: 11.430 V

008852 - Fuel Pressure Regulator Valve (N276)
P2294 - 004 - Open Circuit - Intermittent - MIL ON
Freeze Frame:
Fault Status: 10100100
Fault Priority: 0
Fault Frequency: 6
Reset counter: 255
Mileage: 214160 km
Time Indication: 0

Freeze Frame:
RPM: 473 /min
Load: 61.2 %
Speed: 0.0 km/h
Temperature: 26.0°C
Temperature: 27.0°C
Absolute Pres.: 990.0 mbar
Voltage: 11.938 V

009216 - EVAP Leak Detection Pump Control Circuit
P2400 - 004 - Malfunction - Intermittent - MIL ON
Freeze Frame:
Fault Status: 10100100
Fault Priority: 0
Fault Frequency: 15
Reset counter: 255
Mileage: 214160 km
Time Indication: 0

Freeze Frame:
RPM: 216 /min
Load: 71.3 %
Speed: 0.0 km/h
Temperature: 26.0°C
Temperature: 27.0°C
Absolute Pres.: 990.0 mbar
Voltage: 11.176 V

000808 - Knock Sensor 1 (G61)
P0328 - 001 - Signal too High - Intermittent
Freeze Frame:
Fault Status: 00100001
Fault Priority: 0
Fault Frequency: 1
Reset counter: 255
Mileage: 214179 km
Time Indication: 0

Freeze Frame:
RPM: 2234 /min
Load: 63.9 %
Speed: 102.0 km/h
Temperature: 92.0°C
Temperature: 28.0°C
Absolute Pres.: 990.0 mbar
Voltage: 13.970 V

Readiness: 0000 0000

 

i have a 2007 a6 4.2 sline - and just had epc work done (electronic pedal control i believe). they cleaned the pedal control and it now works like a charm. side benefit is i get a ton more acceleration than previous. not sure if that is a remedy for all epc issues,, but my symptoms were same as yours - epc comes on, limp mode until warmed up, turn off and restart and it would clear and regain full power. one day it wouldn't clear...

 

Interesting.....not sure what can be cleaned about it. Never thought that the accelerator may be an issue. BTW, I think the EPC is for Electronic Power Control. Maybe that is something that I could look at with vag-com if I can figure it out.

 

Yes - they dis say pedal control to me but perhaps just talking to me in layman terms. Apparently the pedal is connected by wire - they cleaned a regulator (?) that controls the pedal operation. This was to avoid replacement if possible as the part is expensive. Solved the problem and improves pedal reaponse enormously.
I suspect the epc light comes on for many different reasons.

 

Mine came on again yesterday. Just wondering if a Throttle Body Adaptation might work?

 

Would anyone know what the values should be for the accelerator sensors at rest and fully depressed? My vag-com has the following:

At rest G79 is 14.5% and G185 is 7.0%
Fully depressed, G79 is 87.1% and G185 is 43.8%