Possible causes – Faulty fuel pump– Blocked fuel filter– Faulty fuel pressure sensor– Fuel pressure sensor harness is open or shorted– Fuel pressure sensor electrical circuit poor connection– Faulty Fuel injector When is the code detected? The Engine Control Module
Possible causes – Faulty fuel pump– Blocked fuel filter– Faulty fuel pressure sensor– Fuel pressure sensor harness is open or shorted– Fuel pressure sensor electrical circuit poor connection– Faulty Fuel injector When is the code detected? The Engine Control Module
Possible causes – Faulty fuel pump– Blocked fuel filter– Faulty fuel pressure sensor– Fuel pressure sensor harness is open or shorted– Fuel pressure sensor electrical circuit poor connection– Faulty Fuel injector When is the code detected? The Engine Control Module
Possible causes – Faulty fuel pump– Blocked fuel filter– Faulty fuel pressure sensor– Fuel pressure sensor harness is open or shorted– Fuel pressure sensor electrical circuit poor connection– Faulty Fuel injector When is the code detected? The Engine Control Module
Possible causes – Faulty fuel pump– Blocked fuel filter– Faulty fuel pressure sensor– Fuel pressure sensor harness is open or shorted– Fuel pressure sensor electrical circuit poor connection– Faulty Fuel injector When is the code detected? The Engine Control Module
Possible causes – Fuel line restricted– Faulty fuel pressure regulator– Faulty fuel pressure sensor When is the code detected? The Engine Control Module (ECM) has determined that the fuel rail pressure is too high for a specific engine RPM Symptoms
Possible causes – Fuel line restricted– Faulty fuel pressure regulator– Faulty fuel pressure sensor When is the code detected? The Engine Control Module (ECM) has determined that the fuel rail pressure is too high for a specific engine RPM Symptoms
Possible causes – Sticking fuel rail pressure regulator When is the code detected? The actual fuel rail pressure is above operating specifications. Symptoms – Engine Light ON (or Service Engine Soon Warning Light) P0088 GMC Description Fuel Rail/System Pressure Too
Possible causes – Sticking fuel rail pressure regulator When is the code detected? The actual fuel rail pressure is above operating specifications. Symptoms – Engine Light ON (or Service Engine Soon Warning Light) P0088 CHEVROLET Description Fuel Rail/System Pressure Too
Possible causes – Sticking fuel rail pressure regulator– Faulty fuel rail pressure sensor When is the code detected? Engine Control Module (ECM) detects fuel rail pressure too high Symptoms – Engine Light ON (or Service Engine Soon Warning Light) P0088
Symptoms – Engine Light ON (or Service Engine Soon Warning Light) P0088 Description Fuel Rail/System Pressure Too High is the generic definition for the P0088; however your vehicle’s manufacturer may have a different definition and information for the P0088 code.