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Thread: O2 sensor issues!!

  1. #1
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    O2 sensor issues!!

    Recently the employee came on, plugged it in to obd and it’s throws up P0130 code (bank 1 sensor1). Bought a new lambda sensor and the car is worse, clears the p0130 code but now have a new code of P0030 bank1 sensor 1 heater circuit). The car is using much more fuel and keeps stalling. Running much worse. Contacted the company we bought sensor from as thought it might be faulty but it will take 6 weeks for them to test it!!. They have said that there is something else wrong with the car and it’s not the sensor! Anyways we’ve decided to put the old sensor back in and it’s running as it was before but no code p0030 and gone back to code P0130?? Is it a faulty sensor or is there something else wrong. We have checked the fuses as was told to check them in case it was a fuse blown.

    Any help very much appreciated!

  2. #2
    Administrator Crasher's Avatar
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    Which engine and what make and part number of sensor did you use?
    2003 Skoda Octavia VRS Estate. APR 98RON remap, APR R1 diverter valve, Jetex exhaust, K&N panel filter, 7.5x18 Alutec Monstr wheels with 225/40 18 Uniroyal Rainsport 3 tyres.
    2006 Polo GTI 1.8T, APR 95RON remap
    1988 Golf 2 GTI 16 valve, 2.2 with Weber Alpha injection
    1983 Golf 1 GTI 8 valve, 2 litre with Eurospec racing 42/36 head
    1972 1302LS auto 1641cc conversion

    Vile Invention

    Dark was that day when Diesel conceived his grim engine that begot you, vile invention, more vicious, more criminal than the camera even, metallic monstrosity, bale and bane of our culture, chief woe of our Commonweal. How dare the Law prohibit hashish and heroin yet license your use, who inflate all weak inferior egos? Their addicts only do harm to their own lives: you poison the lungs of the innocent, your din dithers the peaceful, and on choked roads hundreds must daily die by chance-medley. Nimble technicians, surely you should hang your heads in shame. Your wit works mighty wonders, has landed men on the Moon, replaced brains by computers, and can smithy a "smart" bomb. It is a crying scandal that you cannot take the time or be bothered to build us, what sanity knows we need, an odorless and noiseless staid little electric brougham.

    W.H. Auden (1907-1973), A Curse:

  3. #3
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    Quote Originally Posted by Crasher View Post
    Which engine and what make and part number of sensor did you use?
    Hi,
    its a 2.0 petrol 130 trendline

    bought the sensor from online automotive as that was the only place I could get a pre- cat sensor all my local dealers couldnít get one

    heres a a screen shot from their site of the one I bought




  4. #4
    Administrator Crasher's Avatar
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    Do you mean the 131Kw ALT code engine? This used sensor 06B 906 265 D which changed part number to 1K0 998 262 D but I can’t look up an equivalent Bosch number until tomorrow.
    2003 Skoda Octavia VRS Estate. APR 98RON remap, APR R1 diverter valve, Jetex exhaust, K&N panel filter, 7.5x18 Alutec Monstr wheels with 225/40 18 Uniroyal Rainsport 3 tyres.
    2006 Polo GTI 1.8T, APR 95RON remap
    1988 Golf 2 GTI 16 valve, 2.2 with Weber Alpha injection
    1983 Golf 1 GTI 8 valve, 2 litre with Eurospec racing 42/36 head
    1972 1302LS auto 1641cc conversion

    Vile Invention

    Dark was that day when Diesel conceived his grim engine that begot you, vile invention, more vicious, more criminal than the camera even, metallic monstrosity, bale and bane of our culture, chief woe of our Commonweal. How dare the Law prohibit hashish and heroin yet license your use, who inflate all weak inferior egos? Their addicts only do harm to their own lives: you poison the lungs of the innocent, your din dithers the peaceful, and on choked roads hundreds must daily die by chance-medley. Nimble technicians, surely you should hang your heads in shame. Your wit works mighty wonders, has landed men on the Moon, replaced brains by computers, and can smithy a "smart" bomb. It is a crying scandal that you cannot take the time or be bothered to build us, what sanity knows we need, an odorless and noiseless staid little electric brougham.

    W.H. Auden (1907-1973), A Curse:

  5. #5
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    Quote Originally Posted by Crasher View Post
    Do you mean the 131Kw ALT code engine? This used sensor 06B 906 265 D which changed part number to 1K0 998 262 D but I canít look up an equivalent Bosch number until tomorrow.
    Yes itís is 131 alt engine. Do you think the part I bought was an incorrect one? Or just poor quality . A Bosch alternative would be great. Thanks

  6. #6
    Administrator Keithuk's Avatar
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    First posts normally go in introductions else you could get a free fix and we never see you again!!!

    Manufacturer: VW, Date(s) Used: 05/2002-05/2005, Model: Passat/4Motion/Variant, Engine Code: ALT, 96Kw, 131PS, 2.0 Ltr, 4 Cyls

    VAG Error Code: 16514/000304
    EOBD II Error Code: P0130

    Fault Location:
    Oxygen (Lambda) Sensor 1 (G39), Bank 1 - Malfunction in Circuit

    Possible Cause:
    Malfunction Indicator Lamp (MIL)(K83) active.
    High fuel consumption.
    Excessive smoke from exhaust.

    Wiring/Connector(s).
    Oxygen (Lambda) Sensor heating.
    Inappropriate fuel pressure.
    Faulty fuel injectors.
    Intake air leaks may be faulty.
    Exhaust gas leaks.
    Engine Control Module (ECM).

    Possible Solutions:
    Check/Replace all faulty Wiring/Connector(s).
    Check Inappropriate fuel pressure.
    Check fuel injectors.
    Check for Intake air leaks.
    Check for Exhaust gas leaks.
    Read Measuring Value Blocks (MVB).
    Check/Replace Oxygen (Lambda) Sensor 1 (G39), Bank 1.
    Follow up with Readiness Screen Testing.

    Tech Notes:
    Replacing the Oxygen (Lambda) Sensor 1 usually takes care of the problem.

    When is the code detected?:
    The response of the voltage signal from the sensor takes more than the specified time.

    Description:
    The front heated oxygen sensor (HO2S) (or Oxygen (Lambda) O2 Sensor 1) is placed into the exhaust manifold. It detects the amount of oxygen in the exhaust gas compared to the outside air. The heated oxygen sensor (HO2S) 1 has a closed-end tube made of ceramic zirconia. The zirconia generates voltage from approximately 1V in richer conditions to 0V in leaner conditions. The Heated Oxygen Sensor (HO2S) 1 signal is sent to the Engine Control Module (ECM). The Engine Control Module (ECM) adjusts the injection pulse duration to achieve the ideal air-fuel ratio. The ideal air-fuel ratio occurs near the radical change from 1V to 0V.

    As taken from my new EOBD II Fault Codes Software
    2010 Golf GTD (170) CBBB, 5 Door, Shadow Blue (P6/D5Q), Transmission Code: KXZ, Flat Tyre Indicator, Basic Protection Pack + VCDS.


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