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VW Golf V 1.6 FSI - Problem with the NOx sensor and the engine / electrics

Poczta561 80067 15
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  • #1 12632140
    Poczta561
    Level 10  
    Hello,
    I have a problem with my Golf V 1.6 FSI Sportline from 2003/2004.

    Car from Italy, full service (history checked in the VW database), the course of the original - 109 425 km (I made in 2 months over 1000 km).

    The problem is that - let me post my stories from another forum:

    Jul 21, 2013
    Today I left the car and think "I switch the computer to average daily combustion" ... and I stand at traffic lights (200-250 meters from the garage, the engine was cold from the previous day) and looks like the combustion grows ... 22 liters, then every few seconds by 0.2-0.3 liters per 100 .... until the light changed to green and I had 26-27 liters.
    I think something a lot but it may be so, because the average daily driving from the city is about 6.9 l (night, no traffic) - 7.8 (today, Sunday, small traffic). So generally burning decent - pour PB 98 on Orlen - always the same station in the city, refueled there the previous car, Police there refueling police cars (so they have good fuel).

    I switched off the car after leaving the garage for about 2 km (it was from 80 degrees on the indicator and I went for quick shopping - up to 15 minutes).
    I came back, I fired and ... sk **** n went out: / (I am terribly upset by my car, my Corsa B, despite 203 thousand km never disappointed me, I sold because they corroded the stringers) - but the second time I started, as if I wanted turn off but I gave him some gas and it was ok.
    The revolutions do not wave (before changing the candles they waved - I set up NGK ZFR6S-Q).

    I drove later on city roads (70-80 km / h) with approx. 6 km and ... :shock:

    How do I start and run it evenly, but quickly - always like a warm engine - never on cold. It must always be around 90 degrees on the indicator.


    Changing the candles I made throttle pics (according to the mechanic does not look bad yet, but you have to clean, but again He has no computer to do the adaptation ...):

    VW Golf V 1.6 FSI - Problem with the NOx sensor and the engine / electrics VW Golf V 1.6 FSI - Problem with the NOx sensor and the engine / electrics VW Golf V 1.6 FSI - Problem with the NOx sensor and the engine / electrics


    I do not have a cable, but I think I will buy one ... I will not make a connection for PLN 90 (recently NOx, some error). It used to go out, but I replaced the battery and the same (2 km after changing the battery, the previous one was already 9V and was very old ... maybe the original from 2003. Charging is ok. DO NOT SAY JUST - they just said OK . Candles - it was ok until today (from 2 weeks ago).

    5 Aug 2013
    about 80-85 km from the NOx deletion (week after city) and it turned on as I entered the garage. Late so I was not going to the mechanic (after 21)


    EDIT: P1033 (NOx sensor - signal too small) - always the same. Mechanic puts a leak in the exhaust system (draws in air) ... The second fool probe has a slow resistance of 0.00 and after adding gas jumps from 0.00 to 2.00 (various readings are) and this in a circle ...

    In addition, it showed: P1914 - brake assist pressure sensor - an unintelligible signal. Why ? The car drives normally, and on Thursday there was no mistake. I had insulated cables under the hood - at the height of the plastic cover of the engine, behind it - you can see a yellow tape. A mechanic, a month ago, when I was exchanging candles, he said that something was being touched, but he did not touch.

    11 Aug 2013
    Again the check lit up ...

    From the deletion I made about 180-190 km (recently route 155 km in one day, moderately 80-120 km / h, almost constant climat and side roads 30 km / h, average consumption from a computer 7 liters. Once without an air condition of 5.4 l / 100 km, but also without these side roads - is 1.6 liters per 100 a big difference?).

    Probably the same mistake as last - the cable will come, it will write more.


    I turned off the garage and switched on and off immediately. As I fired the second time, I gave him gas slightly, it did not go out. I pulled into the garage and revolted around 950, I think too much ... and I checked to 3-3,500. Turnover and after releasing the gas dropped to 700. The engine is known, warmed up 90 degrees after driving 12 km.

    Everything happens when I cross between 3 - 3,500 of turnover ... In addition, in the garage today (when I strapped) smelled of rotten eggs from the exhaust - slightly, but I'm just sensitive to smells :lol: Evidently, the exhaust gas because you felt behind the car, in the engine compartment, zero odor. Smell delicate but feel.

    Something I think is all the fault of the dirty throttle, dirty entry, and maybe I have a small hole in the exhaust (somewhere before the second catalyst) ... I have not checked anything yet



    LOG:

    I'm throwing in my log, cable from e-service came,

    I had a mileage of 109 397 and vcds shows 109 390, is it supposed to be?


    [Note: 81fcc120f4]
    Wednesday, 15 August, 2013.10: 18: 45: 10074
    VCDS Version: Beta 11.3.0
    Date version: 20110801



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


    Chassis Type: 1K0
    Scan: 01 03 08 09 15 16 17 19 25 42 44 46 52 56 62 72

    VIN: WVWZZZ1KZ4W0 **** Mileage: 109390km / 67971miles

    00-Steering Angle Sensor - Status: OK 0000
    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
    16-Steering wheel - Status: OK 0000
    17-Instruments - Status: OK 0000
    19-CAN Gateway - Status: OK 0000
    25-Immobilizer - Status: OK 0000
    42-Door Elect, Driver - Status: Malfunction 0010
    44-Steering Assist - Status: OK 0000
    46-Central Conv. - Status: OK 0000
    52-Door Elect, Pass. - Status: OK 0000
    56-Radio - Status: Malfunction 0010
    62-Door, Rear Left - Status: OK 0000
    72-Door, Rear Right - Status: OK 0000

    -------------------------------------------------- -----------------------------
    Address 01: Engine Labels: 03C-906-056-BAG.lbl
    Part No SW: 03C 997 056 M HW: Hardware No
    Component: MED9.5.10 00 9265
    Revision: 00000000 Serial number: VWZ7Z0C8715883
    Coding: 0000072
    Shop #: WSC 01722 264 93767
    VCID: 37792FEF3A69

    3 Faults Found:
    17441 - Sensor for NOx (G295): Signal too Low
    P1033 - 002 - Lower Limit Exceeded - MIL ON
    18321 - Pressure Sensor for Brake Boost (G294): Short to Ground
    P1913 - 002 - Lower Limit Exceeded - Intermittent
    18322 - Pressure Sensor for Brake Boost (G294): Implausible Signal
    P1914 - 008 - Implausible Signal - Intermittent
    Readiness: 0000 0001

    -------------------------------------------------------------------------------
    Address 03: ABS Brakes Labels: 1K0-907-379-MK60-F.lbl
    Part No: 1K0 907 379 K
    Component: ESP FRONT MK60 0103
    Coding: 0019074
    Shop #: WSC 01392 785 00200
    VCID: 3A7F36DB097B

    No fault code found.

    -------------------------------------------------------------------------------
    Address 08: Auto HVAC Labels: 1K0-907-044.lbl
    Part No: 1K0 907 044 BD
    Component: ClimatronicPQ35 090 0808
    Shop #: WSC 00000 000 00000
    VCID: 6ADFC69B395B

    No fault code found.

    -------------------------------------------------------------------------------
    Address 09: Cent. Elect. Labels: 3C0-937-049-23-H.lbl
    Part No SW: 1K0 937 049 L HW: 1K0 937 049 L*
    Component: Bordnetz-SG 1.0 H29 0701
    Revision: 00029000 Serial number: 00000000315705
    Coding: 018D0F0600041800001400001400000000
    Shop #: WSC 00000 000 00000
    VCID: 387B2CD33777

    Subsystem 1 - Part No: 1K1 955 119 A
    Component: Wischer VW350 011 0301
    Coding: 00065493
    Shop #: WSC 00000

    No fault code found.

    -------------------------------------------------------------------------------
    Address 15: Airbags Labels: 1K0-909-605.lbl
    Part No SW: 1K0 909 605 A HW: 1K0 909 605 A
    Component: 0L AIRBAG VW8 022 0500
    Revision: 04022000 Serial number: 0033FD05PRCH
    Coding: 0012364
    Shop #: WSC 01371 785 00200
    VCID: 2A5F069BF9DB

    No fault code found.

    -------------------------------------------------------------------------------
    Address 16: Steering wheel Labels: 1K0-953-549-MY8.lbl
    Part No SW: 1K0 953 549 A HW: 1K0 953 549 A
    Component: Lenksäulenmodul 012 0030
    Coding: 0000012
    Shop #: WSC 01392 785 00200
    VCID: 306B14F3DF07

    No fault code found.

    -------------------------------------------------------------------------------
    Address 17: Instruments Labels: 1K0-920-xxx-17.lbl
    Part No: 1K0 920 860 K
    Component: KOMBIINSTRUMENT VDD 3350
    Coding: 0003101
    Shop #: WSC 00011 888 96745
    VCID: 306B14F3DF07

    No fault code found.

    -------------------------------------------------------------------------------
    Address 19: CAN Gateway Labels: 1K0-907-530.lbl
    Part No SW: 1K0 907 530 C HW: 1K0 907 951
    Component: Gateway H08 0080
    Revision: 08 Serial number: 2100103B08C9AD
    Coding: 3D3F0340070002
    Shop #: WSC 01392 785 00200
    VCID: 2759FFAFEAC9

    No fault code found.

    -------------------------------------------------------------------------------
    Address 25: Immobilizer Labels: 1K0-920-xxx-25.lbl
    Part No: 1K0 920 860 K
    Component: IMMO 3350
    Shop #: WSC 00000 000 00000
    VCID: 306B14F3DF07

    No fault code found.

    -------------------------------------------------------------------------------
    Address 42: Door Elect, Driver Labels: 1K0-959-701-MAX2.lbl
    Part No: 1K0 959 701 L
    Component: Tuer-SG 024 2467
    Coding: 0000182
    Shop #: WSC 00000 000 00000
    VCID: 37792FEF3A69

    2 Faults Found:
    01044 - Control Module Incorrectly Coded
    005 - No or Incorrect Basic Setting / Adaptation
    00131 - Outside Door Handle Illumination/mirror Light Driver Side
    012 - Electrical Fault in Circuit

    -------------------------------------------------------------------------------
    Address 44: Steering Assist Labels: 1Kx-909-14x.lbl
    Part No: 1K1 909 144 E
    Component: EPS_ZFLS Kl.1 1202
    Shop #: WSC 00000 000 00000
    VCID: 2D550D87C835

    No fault code found.

    -------------------------------------------------------------------------------
    Address 46: Central Conv. Labels: 1K0-959-433-MIN.clb
    Part No: 1K0 959 433 C
    Component: KSG 0545
    Coding: 00E802087F2D8404084F0100
    Shop #: WSC 01392 785 00200
    VCID: 306B14F3DF07

    No fault code found.

    -------------------------------------------------------------------------------
    Address 52: Door Elect, Pass. Labels: 1K0-959-702-MIN1.lbl
    Part No: 1K0 959 702 E
    Component: Tuersteuergeraet 09 0115
    Coding: 0000052
    Shop #: WSC 01392 785 00200
    VCID: 316D11F7D40D

    No fault code found.

    -------------------------------------------------------------------------------
    Address 56: Radio Labels: 1K0-035-1xx-56.lbl
    Part No: 1K0 035 186 G
    Component: Radio BNO 0013
    Coding: 0040400
    Shop #: WSC 01392 785 00200
    VCID: 2A5F069BF9DB

    2 Faults Found:
    00874 - Treble Speaker Front Left (R20)
    011 - Open Circuit
    00870 - Bass Speaker Front Left (R21)
    011 - Open Circuit

    -------------------------------------------------------------------------------
    Address 62: Door, Rear Left Labels: 1K0-959-703-GEN1.lbl
    Part No: 1K0 959 703 C
    Component: Tuersteuergeraet 05 0108
    Coding: 0000016
    Shop #: WSC 01392 785 00200
    VCID: 306B14F3DF07

    No fault code found.

    -------------------------------------------------------------------------------
    Address 72: Door, Rear Right Labels: 1K0-959-704-GEN1.lbl
    Part No: 1K0 959 704 C
    Component: Tuersteuergeraet 05 0108
    Coding: 0000016
    Shop #: WSC 01392 785 00200
    VCID: 316D11F7D40D

    No fault code found.

    End ---------------------------------------------------------------------
    Thursday,15,August,2013,10:24:16:10074
    VCDS Version: Beta 11.3.0
    Data version: 20110801


    Chassis Type: 1K0
    Scan: 01 03 08 09 15 16 17 19 25 42 44 46 52 56 62 72

    VIN: WVWZZZ1KZ4W044051 Mileage: 109390km/67971miles

    00-Steering Angle Sensor -- Status: OK 0000
    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
    16-Steering wheel -- Status: OK 0000
    17-Instruments -- Status: OK 0000
    19-CAN Gateway -- Status: OK 0000
    25-Immobilizer -- Status: OK 0000
    42-Door Elect, Driver -- Status: Malfunction 0010
    44-Steering Assist -- Status: OK 0000
    46-Central Conv. -- Status: OK 0000
    52-Door Elect, Pass. -- Status: OK 0000
    56-Radio -- Status: Malfunction 0010
    62-Door, Rear Left -- Status: OK 0000
    72-Door, Rear Right -- Status: OK 0000

    -------------------------------------------------------------------------------
    Address 01: Engine Labels: 03C-906-056-BAG.lbl
    Part No SW: 03C 997 056 M HW: Hardware No
    Component: MED9.5.10 00 9265
    Revision: 00000000 Serial number: VWZ7Z0C8715883
    Coding: 0000072
    Shop #: WSC 01722 264 93767
    VCID: 37792FEF3A69

    No fault code found.
    Readiness: 1110 0101

    -------------------------------------------------------------------------------
    Address 03: ABS Brakes Labels: 1K0-907-379-MK60-F.lbl
    Part No: 1K0 907 379 K
    Component: ESP FRONT MK60 0103
    Coding: 0019074
    Shop #: WSC 01392 785 00200
    VCID: 3A7F36DB097B

    No fault code found.

    -------------------------------------------------------------------------------
    Address 08: Auto HVAC Labels: 1K0-907-044.lbl
    Part No: 1K0 907 044 BD
    Component: ClimatronicPQ35 090 0808
    Shop #: WSC 00000 000 00000
    VCID: 6ADFC69B395B

    No fault code found.

    -------------------------------------------------------------------------------
    Address 09: Cent. Elect. Labels: 3C0-937-049-23-H.lbl
    Part No SW: 1K0 937 049 L HW: 1K0 937 049 L*
    Component: Bordnetz-SG 1.0 H29 0701
    Revision: 00029000 Serial number: 00000000315705
    Coding: 018D0F0600041800001400001400000000
    Shop #: WSC 00000 000 00000
    VCID: 387B2CD33777

    Subsystem 1 - Part No: 1K1 955 119 A
    Component: Wischer VW350 011 0301
    Coding: 00065493
    Shop #: WSC 00000

    No fault code found.

    -------------------------------------------------------------------------------
    Address 15: Airbags Labels: 1K0-909-605.lbl
    Part No SW: 1K0 909 605 A HW: 1K0 909 605 A
    Component: 0L AIRBAG VW8 022 0500
    Revision: 04022000 Serial number: 0033FD05PRCH
    Coding: 0012364
    Shop #: WSC 01371 785 00200
    VCID: 2A5F069BF9DB

    No fault code found.

    -------------------------------------------------------------------------------
    Address 16: Steering wheel Labels: 1K0-953-549-MY8.lbl
    Part No SW: 1K0 953 549 A HW: 1K0 953 549 A
    Component: Lenksäulenmodul 012 0030
    Coding: 0000012
    Shop #: WSC 01392 785 00200
    VCID: 306B14F3DF07

    No fault code found.

    -------------------------------------------------------------------------------
    Address 17: Instruments Labels: 1K0-920-xxx-17.lbl
    Part No: 1K0 920 860 K
    Component: KOMBIINSTRUMENT VDD 3350
    Coding: 0003101
    Shop #: WSC 00011 888 96745
    VCID: 306B14F3DF07

    No fault code found.

    -------------------------------------------------------------------------------
    Address 19: CAN Gateway Labels: 1K0-907-530.lbl
    Part No SW: 1K0 907 530 C HW: 1K0 907 951
    Component: Gateway H08 0080
    Revision: 08 Serial number: 2100103B08C9AD
    Coding: 3D3F0340070002
    Shop #: WSC 01392 785 00200
    VCID: 2759FFAFEAC9

    No fault code found.

    -------------------------------------------------------------------------------
    Address 25: Immobilizer Labels: 1K0-920-xxx-25.lbl
    Part No: 1K0 920 860 K
    Component: IMMO 3350
    Shop #: WSC 00000 000 00000
    VCID: 306B14F3DF07

    No fault code found.

    -------------------------------------------------------------------------------
    Address 42: Door Elect, Driver Labels: 1K0-959-701-MAX2.lbl
    Part No: 1K0 959 701 L
    Component: Tuer-SG 024 2467
    Coding: 0000182
    Shop #: WSC 00000 000 00000
    VCID: 37792FEF3A69

    1 Fault Found:
    01044 - Control Module Incorrectly Coded
    005 - No or Incorrect Basic Setting / Adaptation

    -------------------------------------------------------------------------------
    Address 44: Steering Assist Labels: 1Kx-909-14x.lbl
    Part No: 1K1 909 144 E
    Component: EPS_ZFLS Kl.1 1202
    Shop #: WSC 00000 000 00000
    VCID: 2D550D87C835

    No fault code found.

    -------------------------------------------------------------------------------
    Address 46: Central Conv. Labels: 1K0-959-433-MIN.clb
    Part No: 1K0 959 433 C
    Component: KSG 0545
    Coding: 00E802087F2D8404084F0100
    Shop #: WSC 01392 785 00200
    VCID: 306B14F3DF07

    No fault code found.

    -------------------------------------------------------------------------------
    Address 52: Door Elect, Pass. Labels: 1K0-959-702-MIN1.lbl
    Part No: 1K0 959 702 E
    Component: Tuersteuergeraet 09 0115
    Coding: 0000052
    Shop #: WSC 01392 785 00200
    VCID: 316D11F7D40D

    No fault code found.

    -------------------------------------------------------------------------------
    Address 56: Radio Labels: 1K0-035-1xx-56.lbl
    Part No: 1K0 035 186 G
    Component: Radio BNO 0013
    Coding: 0040400
    Shop #: WSC 01392 785 00200
    VCID: 2A5F069BF9DB

    No fault code found.

    -------------------------------------------------------------------------------
    Address 62: Door, Rear Left Labels: 1K0-959-703-GEN1.lbl
    Part No: 1K0 959 703 C
    Component: Tuersteuergeraet 05 0108
    Coding: 0000016
    Shop #: WSC 01392 785 00200
    VCID: 306B14F3DF07

    No fault code found.

    -------------------------------------------------------------------------------
    Address 72: Door, Rear Right Labels: 1K0-959-704-GEN1.lbl
    Part No: 1K0 959 704 C
    Component: Tuersteuergeraet 05 0108
    Coding: 0000016
    Shop #: WSC 01392 785 00200
    VCID: 316D11F7D40D

    No fault code found.

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


    Męczy mnie ten NOx, ostatnio doszedł czujnik ciśnienia hamulców - mam zaizolowany kabel koło pokrywy silnika, podobno to to ? Auto jeździ normalnie, pali na trasie 6-7 litrów (zależnie czy klima i czy depcze), miasto ok.6,6 (noc) - 7,8 l/100.

    Edit: po przejechaniu ok 25 km (spalanie z kompa 7,5 litrain the city) I checked ELM 327 BT or something "expects" - this is how it writes: P2202 (Pending DTC) NOx sensor Circuit Low Input (Bank 1).

    Case No. 2 - I think on free in the garage (after entering, the engine was 80 degrees - it showed in ELM) when gasifying it and ... as I took about 3 thousand turns and released my leg from the gas, there were moments when the engine it went off (the battery indicator was on for a fraction of a second) and it seemed like it was starting to spin ... The revs waved gently. Candles have new, aku new, what can it be? Maybe this is the problem of this NOx? Sometimes it goes out after warming up at idle (how I start on hot or at intersection).


    I have access to VCDS, what to check and how?
    What could it be ?
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  • #2 12632679
    autoas
    Level 42  
    That's how I read this "diary" and I can say that you can not afford such a car, and that it is not at all a good service, and normally the car should be regularly given to the workshop ...


    What I wrote is such an allusion ... I meant that you do not know, your diagnosis does not guarantee correct interpretation of errors and problems, instead of spending money on "reading" errors and buying "cables" you would have already repaired ...
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  • #3 12632827
    cobraa
    Level 27  
    A domed mechanic with a cable grows :)
  • #4 12632936
    coperfild
    Level 35  
    I see that you keep a log book, but seriously you probably leak this valve on the pipe to the air filter, it comes with such a hose with a throttle.
  • #5 12633061
    Poczta561
    Level 10  
    coperfild wrote:
    I see that you keep the logbook, but seriously you probably leak this valve on the pipe to the air filter, it comes with such a hose with a throttle.


    I do not know if I think well. You can mark your friend in the picture - if you can see?

    What are the symptoms of leakage of this valve?
  • #6 12633293
    coperfild
    Level 35  
    in the picture you can not see, to this tube from the filter flies such a short thin tube, blind it to the test, the symptoms are uneven rotation, sometimes it goes out or stays at 1.5 thousand.
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  • #7 12633762
    Poczta561
    Level 10  
    Yes, I know which, from the valve cover to the air filter housing above the engine ...


    How to plug it (cork, rubber)? Both sides or from one (leave the layout closed or open as I blind any side)?


    Blind him permanently and drive, or just gas the garage on barren?
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  • #8 12635846
    coperfild
    Level 35  
    what? - with a screw
    how ? - from both sides
    What ? - take a picture of what you want to blind
  • #9 12636699
    Poczta561
    Level 10  
    coperfild wrote:

    What ? - take a picture of what you want to do with


    Short rubber hose going from the valve cover to the engine cover (there is an air filter on the bottom and an intake air temperature sensor).

    The cover looks like this: (illustrative picture)
    VW Golf V 1.6 FSI - Problem with the NOx sensor and the engine / electrics VW Golf V 1.6 FSI - Problem with the NOx sensor and the engine / electrics

    here, where I marked the cable from the temperature sensor comes out and it enters as if venting the valve cover.

    Is it it ?
    How do you stop it - screw and I have to ride like that? How is it supposed to react to clogging the engine?


    Oh, and I miss at least one rubber (fixing) - such a round on the air filter in the second picture (you can not even buy in the Dealership ...) - so that the cover does not go to the end and drew the left air?


    EDIT: Here you can see all the cables - you can even see the tube where it goes:
    VW Golf V 1.6 FSI - Problem with the NOx sensor and the engine / electrics
  • #10 12638764
    p1212
    Level 14  
    tomorrow I will cover the cover, I will write it to you
  • #11 12638783
    Poczta561
    Level 10  
    p1212 wrote:
    tomorrow I will cover the cover, it will write you


    I am waiting for ;)
  • #12 12638805
    p1212
    Level 14  
    difficult motor ... if I did not have vcds, I would not make it out ... but how efficient it is, masterpiece of work culture
  • #13 12644964
    Poczta561
    Level 10  
    p1212 wrote:
    difficult motor ... if I did not have vcds, I would not make it out ... but how is it working, a masterpiece of work culture


    In my case, injectors sometimes sound louder.

    I am before cleaning (in case of emergency) - intake and injectors with Liqui Moly - Jet Clean Tronic and replacement of the fuel filter. I think that the injections will be quiet (others have helped). And this Oil Catch from another topic (preventive) https://www.elektroda.pl/rtvforum/topic2630536.html

    Maybe you are somehow directing me, you can see you have experience with this ;) engine ;) What to do, what to check in VCDS? Screenshots I would give on the forum, along with your solution to the problem, would serve future generations of users and mechanics :)
  • #14 12782276
    Andrz3j
    Level 12  
    And what did you solve the problem with NOX?
  • #15 12836989
    Poczta561
    Level 10  
    Andrz3j wrote:
    And what did you solve the problem with NOX?


    I had a hole in the exhaust - already sealed (connecting the pipes after the catalyst No. 2 - where the probe) - improvement - CHECK now lights up not 80-100 km and after about 200 km.

    I have not been rinsing yet.
  • #16 20830023
    arek182
    Level 3  

    Hello, I have a similar problem with the Golf 1.6fsi, in the morning the car turns over and I don't want to start it when connected to VCDS, the errors I posted in the photo and now where to start to diagnose the fault step by step. Regards.

    Screenshot of a VCDS diagnostic screen with vehicle error codes. Screen displaying VCDS program showing error codes for a car.

Topic summary

The discussion revolves around issues with a 2003/2004 VW Golf V 1.6 FSI, particularly concerning the NOx sensor and engine performance. The user reports abnormal fuel consumption readings, with figures rising significantly at idle. Responses suggest potential causes, including a leak in the valve connected to the air filter, which could lead to uneven engine rotation and stalling. Users recommend checking for leaks, using VCDS for diagnostics, and considering injector cleaning and fuel filter replacement. One user resolved a similar NOx issue by sealing a hole in the exhaust system. The conversation emphasizes the importance of proper diagnostics and maintenance for resolving engine-related problems.
Summary generated by the language model.
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