ASR Light has been coming on recently in mid journey, and yesterday I was out driving in a shed load of rain.  ASR Light came on again, then this morning Engine light came on with it and when I went to pull away there seemed to be no power.  Popped the bonnet and found a small pipe from the air box has somehow come lose and disconnected.  Re-fitted and the car drive fine.  

Ran a scan (See results below).  Cleared the faults but both lights came on again  Looking at this I presume the first step is to get a new MAF in as I've read this is what can cause the ASR & engine management lights to come on?  I think the lose pipe from the air box was isolated and should be fine now I put it back in.  

Anyway, just thought I'd check with you guys as my knowledge is limited

Address 01: Engine        Labels: 06A-906-032-AUM.lbl

   Part No: 06A 906 032 DR

   Component: 1.8L R4/5VT         0003  

   Coding: 11500

   Shop #: WSC 14386  

1 Fault Found:

16486 - Mass Air Flow Sensor (G70): Signal too Low 

            P0102 - 35-00 -  - 

Readiness: 0000 0000

-------------------------------------------------------------------------------

Address 03: ABS Brakes        Labels: 1C0-907-37x-ASR.lbl

   Part No: 1C0 907 379 D

   Component: ASR FRONT MK60      0103  

   Coding: 0021505

   Shop #: WSC 00028 000 00000

1 Fault Found:

01314 - Engine Control Module 

            013 - Check DTC Memory

OK so I unplugged the MAF as a test, lights stayed on & boost seemed weaker than normal.  Anything else I should do to test whether it's the MAF or not?

Have you read this Tech Tip from the Ross-Tech web site?

Diagnosing a VW/Audi MAF Failure

Perhaps you will find something there to assist.

Thanks for that Bruce, I'll investigate this further tonight

A current update on the situation is that I re-scanned last night.  Cleared the faults then ran for 20 odd miles and ran another scan.  All faults vanished except for the MAF signal being too low.  However this morning I left home and the ASR light came on straight away.  Then, when I switched on the A/C, the engine management light came on!  

Full scan results from yesterday:

-------------------------------------------------------------------------------

Address 01: Engine        Labels: 06A-906-032-AUM.lbl

   Part No: 06A 906 032 DR

   Component: 1.8L R4/5VT         0003  

   Coding: 11500

   Shop #: WSC 14386  

1 Fault Found:

16486 - Mass Air Flow Sensor (G70): Signal too Low 

            P0102 - 35-00 -  - 

Readiness: 0000 0000

-------------------------------------------------------------------------------

Address 03: ABS Brakes        Labels: 1C0-907-37x-ASR.lbl

   Part No: 1C0 907 379 D

   Component: ASR FRONT MK60      0103  

   Coding: 0021505

   Shop #: WSC 00028 000 00000

1 Fault Found:

01314 - Engine Control Module 

            013 - Check DTC Memory

-------------------------------------------------------------------------------

Address 08: Auto HVAC        Labels: 3Bx-907-044.lbl

   Part No: 3B2 907 044 C

   Component: CLIMATRONIC     C 1.0.0  

   Coding: 11000

   Shop #: WSC 00028  

3 Faults Found:

00603 - Footwell/defroster Flap Positioning Motor (V85) 

            37-10 - Faulty - Intermittent

01271 - Positioning Motor for Temperature Flap (V68) 

            37-10 - Faulty - Intermittent

01274 - Air Flow Flap Positioning Motor (V71) 

            37-10 - Faulty - Intermittent

-------------------------------------------------------------------------------

Address 15: Airbags        Labels: 6Q0-909-605-VW5.lbl

   Part No: 6Q0 909 605 A

   Component: 27 AIRBAG VW5  01   0006  

   Coding: 12855

   Shop #: WSC 00028  

No fault code found.

-------------------------------------------------------------------------------

Address 17: Instruments        Labels: 1J0-920-xx5-17.lbl

   Part No: 1J5 920 926 AX

   Component: KOMBI+WEGFAHRSP VDO V13  

   Coding: 05414

   Shop #: WSC 00050  

   XXXXXXXXXXXXXXXXX     VWZ7Z0B5565542

No fault code found.

-------------------------------------------------------------------------------

Address 19: CAN Gateway        Labels: 6N0-909-901-19.lbl

   Part No: 6N0 909 901 

   Component: Gateway K<->CAN    0001  

   Coding: 00006

   Shop #: WSC 01271  

No fault code found.

-------------------------------------------------------------------------------

Address 46: Central Conv.        Labels: 1J0-959-799.lbl

   Part No: 1J0 959 799 AH

   Component: 4V Zentral-SG Komf. 0001  

   Coding: 00256

   Shop #: WSC 00028  

   Part No: 1J2959802C

   Component: 4V Tırsteuerger. FS0002r  

   Part No: 1J2959801D

   Component: 4V Tırsteuerger. BF0002r  

1 Fault Found:

00932 - Electric Window Motor; Drivers Side (V147) 

            62-10 - No or Incorrect Adjustment - Intermittent

-------------------------------------------------------------------------------

Address 76: Park Assist        Labels: None

   Part No: 1J0 919 283 A

   Component: Einparkhilfe        0001  

   Coding: 00103

   Shop #: WSC 00000  

No fault code found.

End   ---------------------------------------------------------------------

 Right, not sure if I've done this right...  Did Group 002, got the graph up (couldn't get the peak box thing up - not sure why / how to).  Had the missus sat next to me with the lappy and got her to pause the graph as I hit 6k in 2nd.  Here are the results... 

                Address 01: Engine  (06A 906 032 DR)

12:36:58 Group 002: General
  720 /min  Engine Speed (G28)
  31.6 %  Engine Load
  2.72 ms  Injection Timing
  0.53 g/s  Mass Air Flow (G70)

The actual graph was reading: 6080 /min  |  91%  |  11.9ms  |  0.53g/s

...as mentioned in the Tech notes, a car with around 200bhp should be showing 160g/s (ish) at 6k in 2nd.  As you can see, 0.53g/s is well off - unless I've dont the test wrong?

bump

Any thoughts on this peeps?  Car is basically dying when I start it in the morning unless I give it a good few revs.  Then wants to kangaroo up the road, again unless I give it a few revs.  It's fine after driving for around 10 seconds or so.  Just strange.

Ah, that would be the problem then!

Looks like that small pipe on the TIP is imposing on the breather pipe.  Although Apparently the pipe splitting is a common issue regardless of the TIP...