EVAP emissions control fault - Updated

[MAT ED30]

they will charge something silly just to look at it  ask Nasir if he would mind doing some logs for you  i would but like you my battery on laptop is dead  its worth a look at first

[MAT ED30]

have you had the coil packs replaced? and the plugs ?

[andrewparker]

Yep, coil packs have been done.

If it turns out to be the spark plugs I'll go mad. I specifically asked when it was in for it's major service at the end of July to change them, but they argued that they didn't advise they were changed. This is bearing in mind that the car has now done 46k miles. Surely it would have been far easier when they replaced the coil packs anyway!

[Nasir]

Andrew I'm going to be in Huddersfield from 12-30 till around 2:30. I can plug in VCDS around that time.

[andrewparker]

Andrew I'm going to be in Huddersfield from 12-30 till around 2:30. I can plug in VCDS around that time.

You're a star mate. Give me a time and place and I'll be there

[Nasir]

Monday,14,November,2011,14:27:06:60835
VCDS Version: Release 10.6.5
Data version: 20110930


                Address 01: Engine  (1K0 907 115 J)

14:26:51 Group 070: Emission Reduction (TEV - Basic Setting)
  25.8 %  Evap. Emissions Sol. Valve (Open)
  0.0 %  Oxygen Sensor Control Deviation
  8.6 %  Evap. Emissions Sol. Valve (Flow)
  Test OFF   Result Evap. Emissions
Monday,14,November,2011,14:32:35:60835
VCDS Version: Release 10.6.5
Data version: 20110930


                Address 01: Engine  (1K0 907 115 J)

14:32:06 Group 037
  16.5 %  Engine Load
  0.18 V  Bank 1 Sensor 2 Voltage
  0.000  Bank 1 Oxygen Sensor Value
  Test OFF   Result
Monday,14,November,2011,14:35:26:60835
VCDS Version: Release 10.6.5
Data version: 20110930


                Address 01: Engine  (1K0 907 115 J)

14:35:16 Group 050
  830 /min  Engine Speed
  840 /min  Engine Speed (specified)
  A/C-Low   Condition of A/C system
  Compr.ON   Operating condition of A/C Compressor
Monday,14,November,2011,14:38:25:60835
VCDS Version: Release 10.6.5
Data version: 20110930


                Address 01: Engine  (1K0 907 115 J)

14:38:18 Group 070: Emission Reduction (TEV - Basic Setting)
  5.5 %  Evap. Emissions Sol. Valve (Open)
  -0.4 %  Oxygen Sensor Control Deviation
  6.3 %  Evap. Emissions Sol. Valve (Flow)
  EVAP Not OK  Result Evap. Emissions
Monday,14,November,2011,14:41:13:60835
VCDS Version: Release 10.6.5
Data version: 20110930


                Address 01: Engine  (1K0 907 115 J)

14:41:06 Group 091
  800 /min  Engine Speed
  5.9 %  Intake Camshaft Duty Cycle
  28.0°KW  Camshaft Adjustment (spec.)
  27.5°KW  Camshaft Adjustment (act.)
Monday,14,November,2011,14:43:42:60835
VCDS Version: Release 10.6.5
Data version: 20110930


                Address 01: Engine  (1K0 907 115 J)

14:43:35 Group 115: Charge Pressure Control
  800 /min  Engine Speed
  15.0 %  Engine Load
  290.0 mbar  Boost Pressure (specified)
  1010.0 mbar  Boost Pressure (actual)

[Nasir]

The above are the logs I took today, I couldn't find the block for the MAF.

I noticed that the revs stuttered downward when you revved it gently. So if you rev it to 2000RPM it comes down slowly, sticks at 1400RPM then comes down again. The engine was revving to 900RPM, once I cleared the fault it went lower to 800RPM.

Can you carry out a basic setting for the EVAP system?

This thread is similar http://www.ttforum.co.uk/forum/viewtopic.php?f=19&t=206130

[andrewparker]

Thanks Nasir, do you have a link to the Ross Tech fault code page?

Any ideas guys?

[bacillus]

Thanks Nasir, do you have a link to the Ross Tech fault code page?

Any ideas guys?

http://wiki.ross-tech.com/wiki/index.php/Main_Page

[andrewparker]

Thanks Nasir, do you have a link to the Ross Tech fault code page?

Any ideas guys?

http://wiki.ross-tech.com/wiki/index.php/Main_Page

I meant a link to the actual fault code that the car has thrown up. I'm pretty sure it was this one - http://wiki.ross-tech.com/wiki/index.php/16825/P0441/001089 - but I can't be sure.

[Nasir]

^^That's the one.

Andrew I think I know what you're fault is. Have a read here http://www.mk5golfgti.co.uk/forum/index.php/topic,18819.0.html

From what you told me about filling up at Tesco, this makes sense. I hope this leads you to solving the problem

[andrewparker]

Ahh, that's really interesting. I did read another post (this one - http://www.mk5golfgti.co.uk/forum/index.php/topic,37012.0.html) where the canister was to blame. It will be interesting to see if it solves their problem.

I've just checked the hoses on my car and everything looks good. I'm guessing that part is pretty easy to fit too (famous last words!).

[andrewparker]

Well after many weeks it appears this problem is finally fixed.

I resorted to dropping my car off at VW Huddersfield and telling them I didn't want it back until it was resolved!

Following replacing the DV, N80 Solenoid Valve, charcoal canister and PCV I was still having issues with the Exhaust System Warning light, a sticking throttle, and rising revs at idle.

It turned out that when the PCV was replaced they didn't change the breather pipe, which had actually split. There was also another hose going into the vacuum valve that was split, so quite a few air leaks. The replacement charcoal canister was also deemed to be faulty, so that was replaced again.

Now I have my car back the differences are unbelievable. I never thought the performance had been effected, but I was wrong. Fuel economy is up, and the car feels very quick again.