Mass Air Flow - Implausible Signal (Fault codes)

[student91]

Hi all,

 

First of all, thank you to all of you out there who use your experience and knowledge to help people, and special thanks to Xavier for being kind enough to help me out with his VCDS. This is (hopefully) the last chapter in my DPF woes thread: http://www.briskoda.net/forums/topic/340055-dpf-worst-case-scenario-replace-please-help-i-need-my-car/

 

SUMMARY: In limp home mode (with flashing glow plugs + EML lights), went to garage, he said I need a DPF replacement. Queue shock and horror. Continued limping to another garage, who cleared the fault codes, got rid of limp, and recommended blasting it out on the motorway. I did so, but the flashing glow plugs came back on. Got VCDS done just now with Xavier (with flashing glow plugs on) and it shows up with just one fault code - MAF sensor implausible signal. Any thoughts on how to manage this? I found a YouTube tutorial on cleaning it, and will perhaps look for a new air filter too.

 

(If there's anything I should anonymise, let me know, or mods feel free to edit/delete anything irrelevant!)

 

Wednesday,21,January,2015,18:27:20:04717

VCDS -- Windows Based VAG/VAS Emulator

VCDS Version: 14.10.0.0 (x64)

Data version: 20141022

 

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

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

 

Scan: 01 03 08 09 15 17 19 25 44 56

 

01-Engine -- Status: Malfunction 0010

03-ABS Brakes -- Status: OK 0000

08-Auto HVAC -- Status: OK 0000

09-Cent. Elect. -- Status: OK 0000

15-Airbags -- Status: OK 0000

17-Instruments -- Status: OK 0000

19-CAN Gateway -- Status: OK 0000

25-Immobilizer -- Status: OK 0000

44-Steering Assist -- Status: OK 0000

56-Radio -- Status: OK 0000

 

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

Address 01: Engine (J623-CAYB)       Labels: 03L-906-023-CAY.clb

   Part No SW: 03L 906 023 DM    HW: 03L 906 023 DL

   Component: 1,6l R4 CR td H13 6315  

   Revision: --------    Serial number:               

   Coding: 00114014000500080000

   Shop #: WSC 13765 031 00050

   ASAM Dataset: EV_ECM16TDI02103L906023DM 001003

   ROD: EV_ECM16TDI02103L906023DJ.rod

   VCID: 74EC67F8DFA942817B3-8021

 

1 Fault Found:

7329 - Mass Air Flow Sensor (G70) 

          P0101 00 [167] - Implausible Signal

          MIL ON - Not Confirmed - Tested Since Memory Clear

             Freeze Frame:

                    Fault Status: 00000001

                    Fault Priority: 2

                    Fault Frequency: 2

                    Mileage: 196806 km

                    Date: 2015.01.20

                    Time: 18:02:37

 

Readiness: 0000 0000

 

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

Address 03: ABS Brakes (J104)       Labels: 6R0-907-37x-ABS80.lbl

   Part No SW: 6R0 907 379 S    HW: 6R0 907 379 AB

   Component: ABS8.2 front  H03 0001  

   Revision: --------    

   Coding: 400100DB007200B3022D00E400DA00000000

   Shop #: WSC 13765 790 00050

   VCID: 4E98D5101DC54851AD7-801B

 

No fault code found.

 

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

Address 08: Auto HVAC (J301)       Labels: 6R0-820-045-9AP.clb

   Part No SW: 5J0 820 045 B    HW: 5J0 820 045 B

   Component: Climatic       12 0670  

   Revision: 0003S 12    

   VCID: 244C57B827C992012B3-8071

 

No fault code found.

 

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

Address 09: Cent. Elect. (J519)       Labels: 6R0-937-08x-09.clb

   Part No SW: 6R7 937 087 F    HW: 6R7 937 087 F

   Component: PQ25 BCM      H11 0017  

   Revision: -1------    Serial number: 1002424901    

   Coding: 25980B3808C92400922000003E0A08C00000400F600000000000

   Shop #: WSC 13765 790 00050

   VCID: 4796E034F6BF9919EE1-8012

 

   Subsystem 1 - Part No SW: 6R0 959 802 M    HW: 6R0 959 802 M  Labels: 6R0-959-802.CLB

   Component: J386__TSG_FT  002 3210 

   Coding: 030000

 

   Subsystem 2 - Part No SW: 6R0 959 801 P    HW: 6R0 959 801 P  Labels: 6R0-959-801.CLB

   Component: J387__TSG_BT  002 3210 

   Coding: 020000

 

   Subsystem 3 - Part No: 5J0 951 172 

   Component: DWA-Sensor       03   03 1109 

 

   Subsystem 4 - Part No: 1K8 951 605 A

   Component: LIN BACKUP HORN H11  H11 9004 

 

   Subsystem 5 - Part No: 5J0 951 172 

   Component: DWA-Sensor       03   03 1109 

 

No fault code found.

 

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

Address 15: Airbags (J234)       Labels: 5K0-959-655.clb

   Part No SW: 6R0 959 655 K    HW: 6R0 959 655 K

   Component: VW10AirbagT2C H08 0020  

   Revision: --------    Serial number: 003GX002V638

   Coding: 003243

   Shop #: WSC 13765 790 00050

   ASAM Dataset: EV_AirbaVW10BPAVW250 A01001

   ROD: EV_AirbaVW10BPAVW250_SK25.rod

   VCID: 4A90D900EDAD6471F1F-801F

 

   Crash sensor for side airbag; driver side: 

   Serial number: 3495RRB404T6T8MGF8DP

 

   Crash sensor for side airbag; front passenger side: 

   Serial number: 3505RRB404T6T8MGKOM4

 

No fault code found.

 

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

Address 17: Instruments (J285)       Labels: 5K0-920-xxx-17.clb

   Part No SW: 5J0 920 910 D    HW: 5J0 920 910 D

   Component: KOMBI         H15 0206  

   Serial number: 00000000000000

   Coding: 420A00

   Shop #: WSC 13765 031 00050

   ASAM Dataset: EV_Kombi_UDS_VDD_RM09 A04052

   ROD: EV_Kombi_UDS_VDD_RM09_SK25.rod

   VCID: 2854438853E1766107B-807D

 

No fault code found.

 

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

Address 19: CAN Gateway (J533)       Labels: 6N0-909-901-6R.clb

   Part No SW: 6N0 909 901     HW: 6R7 937 087 F

   Component: GW-K-CAN TP20 0017  

   Revision: -1------    

   Coding: 032300

   Shop #: WSC 13765 790 00050

   VCID: 70E46BE8A3B17EA19FB-8025

 

No fault code found.

 

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

Address 25: Immobilizer (J334)       Labels: 5K0-920-xxx-25.clb

   Part No SW: 5K0 953 234     HW: 5K0 953 234 

   Component: IMMO          H15 0206  

   Serial number: 00000000000000

   Coding: 000000

   Shop #: WSC 00000 000 00000

   ASAM Dataset: EV_Immo_UDS_VDD_RM09 A03006

   ROD: EV_Immo_UDS_VDD_RM09_SE25.rod

   VCID: 6AD079808D6D8471D1F-803F

 

No fault code found.

 

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

Address 44: Steering Assist        Labels: 6Q0-423-156.clb

   Part No: 6R0 423 156 B

   Component: LenkhilfeTRW        V277  

   Coding: 10110

   Shop #: WSC 13765  

   VCID: 2F66A894EA0F2159C61-807A

 

No fault code found.

 

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

Address 56: Radio (J503)       Labels: 5M0-035-1xx-56.clb

   Part No SW: 5J0 035 161 C    HW: 5J0 035 161 C

   Component: Radio-SWING   008 0031  

   Revision: -----06S    Serial number: SKZ4Z2K1250156

   Coding: 050004000006

   Shop #: WSC 13765 790 00050

   VCID: 224051A03DDD9C3159F-8077

 

No fault code found.

 

End-------------------------(Elapsed Time: 01:59)--------------------------

 

[jrw]

http://wiki.ross-tech.com/wiki/index.php/16485/P0101/000257

My money is on the egr being faulty rather than the maf

[student91]

http://wiki.ross-tech.com/wiki/index.php/16485/P0101/000257

My money is on the egr being faulty rather than the maf

 

Do you think I should get the VCDS done again some other time, or maybe it's just showing up wrong in the first place? 

[student91]

I am very happy to report that the problem is solved. With many thanks to all who gave help and advice.

 

Went to independent specialist... Extreme stress and prospect of £1400 bill.

Went to a main dealer... Cleared fault codes, didn't fix anything, took £70.

Did research, got your advice and Xavier with his VCDS. Went to the local mechanic and... £13 part plus £10 labour.

DONE AND DUSTED.

 

It was an air filter problem, the seal was broken. Can't believe two specialists couldn't have told me that.

 

[Egonolsen]

I have the same issue with a skoda superb 2011

Can you tell me wich seal was broken?

The picture link is not working anymore....

[student91]

On 14/09/2018 at 19:45, Egonolsen said:

I have the same issue with a skoda superb 2011

Can you tell me wich seal was broken?

The picture link is not working anymore....

 

Hi! I am the OP who had this problem back in 2015. I don't know how best to describe it, but if you look at the mass air flow apparatus, there's a filter with a rubber seal around the edge. This makes sense, as you want the air through the filter, not the edge. But that rubber seal was kinked, and there was an imperfect seal. 

 

I don't know if that helps, but it was very much a physical issue which was easily resolved by undoing a few bits easily accessible by a non-specialist garage, getting the part from Euro then and there (can't remember specific name) and fitting it.