No, it is not a bad or loose gas cap. It is a problem with the secondary air pump.
A bad fuel cap can make your check engine light go on. It shouldn't cause your car to run rough or die.
Most probable cause: Replace Gas Cap Most probable cause: Replace Gas Cap
Probably a bad gas cap.
The most probable cause is a vacuum leak or a bad fuel cap. Inspect all the vacuum hoses for damage and buy a new fuel cap, making sure it is tightly on the vehicle.
Bad coil? Bad distributor cap? Bad distributor rotor?
Not likely.
Bad thermostat, cap and radiator is a common cause.
It could either be a bad ignition coil, a bad ignition rotor, a bad ignition cap, a bad ignition control module (if equipped), or a bad coil to cap wire.
A common cause for that code would be a loose gas fill cap or a damaged/missing O ring seal on the cap.
Both of these codes indicate a leak in the evaporative emissions control system. The most common cause of this code is a bad fuel gas cap.
A bad seal on a gas can cap could potentially cause vapor lock in the gas can itself, leading to issues with fuel flow. However, vapor lock in the vehicle's fuel system is typically caused by heat-induced evaporation of fuel before it reaches the engine, not by a bad seal on a gas can cap.