04 PSD, 233K miles. Intermittent problem with engine surging momentarily, then runs bad for 10-15 sec, then runs great. No codes showed until today. Getting code 2287 for injector control pressure sensor intermittent signal. Question(s) - Just replace the sensor? or does the regulator need to be replaced as well? Any thing else I need to check? Is there a way to verify that it is the sensor and not the regulator? On my truck, I believe the sensor is on the back of the engine on the drivers side by the back of the rocker cover, correct? ANY input on this is VERY MUCH appreciated. Truck is down, and it is my daily driver. THANKS!!!