Yep, I think the engine codes I had were unrelated.

When you use the unlocking button on the centre console, it works, it just doesn't work with the fob to unlock. Locking using the fob always works. Unlocking with the fob never works but always triggers the cars blinkers. Using the button the dash will work to both lock and unlock all doors as long as they started out unlocked.

I am assuming it can't be the electrical connections on the air pump or a leak in the hose because otherwise it wouldn't work with the button on the dash to unlock.