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It seems that you have been through the electronic possibilities and eliminated them. How about a bent tooth on the flywheel? A mechanical issue. You would still get the main tick from the timing gap, but a pulse from one or two teeth could be weak or missing.
My Audi info on that code also mentioned the possibility of reversing the polarity on the sensor, but a quick look at the engine in my garage says you'd have to break something to plug it in wrong.
..Please note the disclaimer in my signature before taking time to remove parts to check the flywheel.
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I am not an attorney, mechanic, or member of the clergy. Following any advice given in my posts is done at your own peril.
Last edited by 78F350; 11-04-2022 at 02:57 PM.
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