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What may have caused my Mazda CX-5 to suddenly stall?

My 2014 Mazda CX-5 diesel stalled suddenly and will not restart. All the dash lights came on at the same time as it stalled in the middle of the road. What is the likely cause of this?

There are literally hundreds of things that could have caused the engine to suddenly stop. It could be anything from an electrical failure to a broken crankshaft to a seized torque-converter to an empty fuel tank. And practically anything in between. The dash lights illuminating when the engine stopped is actually quite normal, as the lights are trying to warn you that something’s wrong (in case you hadn’t noticed).

The fact that it won’t restart is no real clue, either, as you haven’t told me whether the engine turns over and won’t fire, or won’t turn over on the starter at all.

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