Question about 2002 Audi A4

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Audi a4 1,8 s line

Hi im aslo working mechanic but i need help,, my frd replace engine 1.8 audi a4 afte that engine light on i check code come up crankshaft sensor ,,then i put new sensor light come back,,i check wire with plug in,, grown 0v 247v ref 247v signal ,,then i unplug swtich i check again read same,,, i start test it from ecu then read same thing,,my 5 v missing but im not sure neeed ecu?/thanks

Posted by Saringe Kurdistani on


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Arnie Burke

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The computr needs a flash or reprograming w a factory scanner. It common not to recognize new motor. First make sure pins are clean on computr plug

Posted on Feb 06, 2016

Testimonial: "ok thanks so much..."

  • Saringe Kurdistani
    Saringe Kurdistani Feb 06, 2016

    pin is good also wire is good,, monday i try flash or reprograming



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Please leave positive feedback if I have helped


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Check engine light and strong fuel smell when stopped with heat on.

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It sounds like it might be the oxygen sensor failing on your car. If it *is* the O2 sensor, it's not that expensive, from $50 to $200 and may be something you can replace yourself. But it's very unusual to have an O2 sensor fail so early. They typically last 60,000 miles or more.

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