When mine went out it only caused the CEL to come on with a cam phaser code for bank 1. Car ran fine otherwise. I went ahead and replaced the sensor but it came back. Then I came across multiple forum threads regarding the alternator diode bridge having a history of failing and allowing ripple in to the system and causing the CEL to come on and give a false phaser code. Replaced the alternator and no more CEL.
Even though mine ran fine, I would think that enough ripple were allowed into the electrical system it could cause some severe symptoms to manifest. I would go to Autozone, get an alternator and see if it cures the problem. If not, then just take it back. They have a very liberal return policy.
2006 GT- Airaid Race CAI, 62mm BBK TB, SR Performance UD Pullies, FRPP Hot Rod Cams, CMDP's, Excedy Stage One Clutch and lightweight flywheel, Pacesetter Long Tube Headers with matching O/R H-Pipe & MBRP Street Axlebacks, Lito 91 Octane Tune