Possible causes – Engine mechnical condition– Fuel system malfunction– Ignition system malfunction– Faulty oxygen sensor Tech notes There is a service bulletin for the following Volkswagen vehicles: Volkswagen Eos 2006-2007Volkswagen GTI 2006-2007Volkswagen Jetta 2005-2007Volkswagen Passat 2006-2007Volkswagen Passat Wagon 2006-2007Volkswagen Factory
Possible causes – Engine mechnical condition– Fuel system malfunction– Ignition system malfunction– Faulty oxygen sensor Symptoms – Engine Light ON (or Service Engine Soon Warning Light) AUDI Technical Service Bulletins for P1093 code 2005 AUDI A4 FUEL SYSTEM, GASOLINE:DELIVERY:FUEL PUMP
Possible causes – Faulty Tumble Generator Position Sensor– Tumble Generator Position Sensor harness is open or shorted– Tumble Generator Position Sensor circuit poor electrical connection Symptoms – Engine Light ON (or Service Engine Soon Warning Light) P1093 SUBARU Description Tumble
Possible causes – Faulty VVEL Actuator Motor– VVEL Actuator Motor harness is open or shorted– VVEL Actuator Motor circuit poor electrical connection– Faulty VVEL actuator sub assembly– Faulty VVEL ladder assembly– Faulty VVEL control module Symptoms – Engine Light ON
Possible causes – Faulty VVEL Actuator Motor– VVEL Actuator Motor harness is open or shorted– VVEL Actuator Motor circuit poor electrical connection– Faulty VVEL actuator sub assembly– Faulty VVEL ladder assembly– Faulty VVEL control module Symptoms – Engine Light ON
Possible causes – Fuel system leakage– Faulty fuel injector– Faulty Fuel Rail Pressure (FRP) sensor– Fualty Fuel Pump Symptoms – Engine Light ON (or Service Engine Soon Warning Light) ISUZU Technical Service Bulletins for P1093 code 2004 ISUZU HTR ENGINE
Possible causes – Low fuel pressure– Large vacuum leak on engine– Faulty Mass Air Flow (MAF) sensor– Faulty Ignition– Faulty fuel injector Symptoms – Engine Light ON (or Service Engine Soon Warning Light)