Possible causes – Faulty fuel pump– Blocked fuel filter– Faulty fuel pressure solenoid– Faulty Fuel injector Tech notes There is a factory service bulletin for the P0093 Code. The bulletin suggest for replacing the injectors to repair the problem. 2001-2004
Possible causes – Faulty fuel pump– Blocked fuel filter– Faulty fuel pressure solenoid– Faulty Fuel injector Tech notes There is a factory service bulletin for the P0093 Code 2001-2004 GMC Sierra2003-2004 GMC Topkick C4500/C5500 SeriesGMC Factor Service Bulletin OBDII Code
Possible causes – Fuel Quantity Solenoid harness is open or shorted– Fuel Quantity Solenoid electrical circuit poor connection– Faulty Fuel Quantity Solenoid When is the code detected? The Engine Control Module (ECM) has determined that the actual fuel pressure is
Possible causes – Fuel Quantity Solenoid harness is open or shorted– Fuel Quantity Solenoid electrical circuit poor connection– Faulty Fuel Quantity Solenoid When is the code detected? The Engine Control Module (ECM) has determined that the actual fuel pressure is
Possible causes – Fuel Quantity Solenoid harness is open or shorted– Fuel Quantity Solenoid electrical circuit poor connection– Faulty Fuel Quantity Solenoid When is the code detected? The Engine Control Module (ECM) has determined that the actual fuel pressure is
Possible causes – Fuel system internal leak– Fuel supply pump or injector(s)– Faulty pressure limiter valve– Faulty fuel pressure sensor When is the code detected? Fuel rail pressure lower than expected Symptoms – Engine Light ON (or Service Engine Soon
Symptoms – Engine Light ON (or Service Engine Soon Warning Light) P0093 Description Fuel System Leak Detected Large Leak is the generic definition for the P0093; however your vehicle’s manufacturer may have a different definition and information for the P0093