* A bad fuel pressure sensor
* A bad wiring connection to the fuel pressure sensor
* A bad fuel pump
* A clogged fuel filter
* A bad fuel pressure regulator
* A faulty PCM
Additional notes...
Other factors that can sometimes lead to a P0193 code are:
* A bad fuel injector
* A bad crankshaft position sensor
* A bad camshaft position sensor
* A bad MAP sensor
* A bad oxygen sensor
* An exhaust leak
* A bad catalytic converter
* A stuck open or closed thermostat