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My car has a camshaft and a crankshaft sensor problem. Car runs fine but give trouble occasionally. Is it gonna effect to get a new WOF?
Thank you.

The vehicle must be safe to be operated. Therefore, if the engine management light is on or the vehicle is not fit for purpose then it will fail the WOF test. If no warning light is on and the vehicle runs fine during the WOF test then it is not a reason for failure.