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Thread: Just bought an A4 but engine light has come on

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  1. Just bought an A4 but engine light has come on 
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    Hi
    Last month I bought an Audi A4 avant sline
    The engine light has now come on !
    My mate has a reader and 2 codes have come up p0471 and p2196
    I think one is a oxygen sensor and other an exhaust sensor? Is one connected to the other ?
    Should I change both or has something made them come on ? Thanks in advance
     
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  2. Re: Just bought an A4 but engine light has come on 
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    SO it is a diesel.... with a DPF...

    16855 (P0471) - Exhaust Pressure Sensor 1 (G450): Implausible Signal

    If we get this we fit a new GENUINE AUDI sensor (£72.96) and then it MUST be calibrated. Avoid non genuine sensors, they often fail.

    008598 (P2196) - Oxygen (Lambda) Sensor B1 S1 - Signal too High (Rich) - MIL ON

    Have a new pre DPF/CAT lambda sensor fitted, Bosch or genuine, they are £192.16 genuine but you can get Bosch for a lot less.
    Anthropogenic climate change, the biggest con inflicted on mankind since religion...

    Slava Ukraini
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  3. Re: Just bought an A4 but engine light has come on 
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    Thank you , so I will need both ? Will I need Audi to calibrate it ? I think I can fit my own but no way can I calibrate it
     
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  4. Re: Just bought an A4 but engine light has come on 
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    From what I can see from the codes is two separate faults so yes, both sensors. The pressure sensor must be calibrated and it may also need a forced regeneration and a look at the Ash Mass value.
    Anthropogenic climate change, the biggest con inflicted on mankind since religion...

    Slava Ukraini
    !


     
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  5. Re: Just bought an A4 but engine light has come on 
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    Thank you for your reply’s ,
    I think it’s all way over my head so I will have to get my hand in my pocket and pay Audi ( can an independent garage do it ) ?
     
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  6. Re: Just bought an A4 but engine light has come on 
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    Yes a good VAG specialist will have no problem.
    Anthropogenic climate change, the biggest con inflicted on mankind since religion...

    Slava Ukraini
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  7. Re: Just bought an A4 but engine light has come on 
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    All sorted now thank you car seems to run smoother now to thanks for your help
     
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