It's been debated for years, but there's a chance that EMP's could be one of Iron Man's weaknesses. His suit is made of some of the strongest alloys in existence, so the EMP would have to be very strong to penetrate his defenses.

What is the weakness of Iron Man?

From the villains his former ego-driven pursuits created that later returned to haunt him, to causing a rift in the Avengers by backing the Sokovia Accords, Tony Stark's greatest weakness is arguably himself, and more specifically, his self-subscribed obligation to protect and save everyone.

What will still work after an EMP?

Appliances like a fireplace, solar oven, power tools or generators won't be affected by an EMP. These non-electric appliances don't necessarily operate with solid-state electronic controls and will probably still work when even after an EMP has blasted through your area.