Ii have 2004 nissan quest with a problem that started with the engine shutting off while driving with no indications. It will start with no problems afterwards then I got an engine service light. Autozone diagnostics indicated loss of power, camshaft sensor bank 2. I checked the sensor and ground and power and also replaced with new sensor and the problem and the service engine light still hasn't gone away. P.S. Even if the camshaft sensor is bad then the engine shouldn't stall or shut off while driving right? What could the problem be?