Vehicle is sluggish and not accelerating at it should. I got stuck in traffic once as the accelerator and break pedals blocked. Requested diagnostics (I am currently abroad with no Lincoln service) and had the following failure codes returned: P1650, P1703 and P1780.

Start the vehicle, and while pushing down on the break put the vehicle in reverse and gently use accelerator to go back an inch or four. If that doesn't work continue to rock the car back and forth until the ebrake cuts loose

Throttle position sensor.

Your problem is a bit vague & the make & model on the car only says 2001 Honda Civic. A lack of acceleration can be a couple of things in any vehicle. It can be a sign of clogged fuel injectors...but the Civic's from the 90's to early 2000's were known for problems with stuck accelerators or rapid acceleration. Both these "defects" involved issues with the throttle plate & pads. In instances where the car seems sluggish & won't accelerate rapidly...a light oiling to the throttle & pads could be a solution; otherwise it's inevitable that you'll need slight adjustments at the mechanic.

IF YOU ARE HAVING BRAKES PROBLEMS THEN YOU NEED TO STOP DRIVING VEHICLE... get it check by dealer repair should be covered under warranty
sounds like a computer software problem

Could be the belt and I would not wait, unless you to buy a whole new engine.

sounds like you should change the transmission fluid

I have a 2005 Mariner with the same problem. Always when the weather drops

spray some lubricant or wd40 to the switch of accelerator pedal. The switch is located in passenger caben at the end of accelerator pedal.

Check motor mounts.

one of tha abs and traction sensors has blown