P0344 $7E8 Generic Camshaft Position Sensor A Circuit Intermittent Bank 1 or Single Sensor?

The error code P0344 on your 2014 Ford Flex indicates an issue with the Camshaft Position Sensor A Circuit Intermittent in Bank 1 or a Single Sensor. It could be the camshaft phaser is having an issue, so please check the engine oil level and check the engine oil if it is dirty and needs service. Clear the codes to see if they come back. If so, check the electrical connectors at the sensors though I doubt there is a problem with both connectors or sensors but it is worth a look.

Here is the location of the sensors so you can check it out or see what needs to be done to fix the problem. Bank 1 is on the right side of the engine as you sit in the driver's seat. If the oil is clean and full and the sensors are okay the camshaft phaser will need to be changed out, which I will included as well if you want to see how the job is done. Check out the images (below). Let us know how it goes.

Did you check the engine oil? You can change both sensors if you want but to me it sounds more like the phaser is worn out or the oil is low or dirty. After changing the sensors clear the codes and let me know what happens.

How is the engine oil?

Yep, that will cause the codes. With no oil the engine might be seized. To tell for sure this guide can help us:

https://www.2carpros.com/articles/engine-seized-test

Please upload pictures or videos of the problem so we can see what's going on.

Looks like the battery is dead, I would remove it and take it to the auto parts store for testing. Here is a generic guide to help you step by step with instructions in the diagrams below to show you how on your car:

https://www.2carpros.com/articles/how-to-replace-a-car-battery

Check out the images (below). Let us know what you find.

That could be, how is the battery?