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Have an Audi A5 tfsi with a p0016 error code, engine will not start off one push of the key but will start if you hold the key in. Once running it is smooth with no evidence of a misfire. Any advice please?
Tia
Phil.
 

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Audi A5 f5 3.0 TDI Quattro S line S tronic Virtual Cockpit Driving assist pack
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P0016 tends to be the timing of the crank shaft positions not in their respective correct places once the engine is running. The car is in essence trying to stop the engine running to reduce damage to the engine.

Could be a few reasons;
- Crankshaft position sensor failing, after clearing error codes and again re-appears then you'll need a more comprehensive scanner tool if you know what you're doing or a second opnion from a mechanic.

OR if the timing is actually out then;
-Stretched/ worn timing belt/chain
-Incorrectly installed timing belt/chain


~Alex
 

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As a side note and genuine warning. You should immediately get it resolved and really under most circumstances to not drive the car as it may cause internal engine damage and you'll end up with a lemon.

~Alex
 
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