Hummer P1090 Pre-Catalyst Fuel Trim Too Lean Bank 1

Description 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) The OBD2 Code Information Be Applicable For Hummer: 2009 Hummer H3T Alpha,2008 Hummer HX Concept,2008 Hummer H3 Wagon Concept,2008 Hummer H3…

Hummer P1088 Exhaust Bank 4- Mixture Adaption Range 2 Lower Rich Limit Not Reached

Description Possible causes – Faulty Oxygen Sensor– Oxygen Sensor harness is open or shorted– Oxygen Sensor circuit poor electrical connection Symptoms – Engine Light ON (or Service Engine Soon Warning Light) The OBD2 Code Information Be Applicable For Hummer: 2009 Hummer H3T Alpha,2008 Hummer HX Concept,2008 Hummer H3 Wagon Concept,2008 Hummer H3 Alpha,2008 Hummer H2,2007…

Hummer P1089 VVEL Control Shaft Position Sensor Bank 1 Circuit

Description Possible causes – Faulty VVEL Control Shaft Position Sensor Bank 1– VVEL Control Shaft Position Sensor Bank 1 harness is open or shorted– VVEL Control Shaft Position Sensor Bank 1 circuit poor electrical connection– Faulty VVEL control module Symptoms – Engine Light ON (or Service Engine Soon Warning Light) P1089 Hummer INFINITI OBD Code…

Hummer P1087 Exhaust Bank 4- Mixture Adaption Range 1 Lower Rich Limit Not Reached

Description Possible causes – Faulty Oxygen Sensor– Oxygen Sensor harness is open or shorted– Oxygen Sensor circuit poor electrical connection Symptoms – Engine Light ON (or Service Engine Soon Warning Light) The OBD2 Code Information Be Applicable For Hummer: 2009 Hummer H3T Alpha,2008 Hummer HX Concept,2008 Hummer H3 Wagon Concept,2008 Hummer H3 Alpha,2008 Hummer H2,2007…

Hummer P1086 Exhaust Bank 4- Mixture Adaption Range 2 Lower Lean Limit Not Reached

Description Possible causes – Faulty Oxygen Sensor– Oxygen Sensor harness is open or shorted– Oxygen Sensor circuit poor electrical connection Symptoms – Engine Light ON (or Service Engine Soon Warning Light) The OBD2 Code Information Be Applicable For Hummer: 2009 Hummer H3T Alpha,2008 Hummer HX Concept,2008 Hummer H3 Wagon Concept,2008 Hummer H3 Alpha,2008 Hummer H2,2007…

Hummer P1085 Exhaust Bank 4- Mixture Adaption Range 1 Lower Lean Limit Not Reached

Description Possible causes – Faulty Oxygen Sensor– Oxygen Sensor harness is open or shorted– Oxygen Sensor circuit poor electrical connection Symptoms – Engine Light ON (or Service Engine Soon Warning Light) The OBD2 Code Information Be Applicable For Hummer: 2009 Hummer H3T Alpha,2008 Hummer HX Concept,2008 Hummer H3 Wagon Concept,2008 Hummer H3 Alpha,2008 Hummer H2,2007…

Hummer P1083 Exhaust Bank 3- Mixture Adaption Range 1 Lower Rich Limit Not Reached

Description Possible causes – Faulty Oxygen Sensor– Oxygen Sensor harness is open or shorted– Oxygen Sensor circuit poor electrical connection Symptoms – Engine Light ON (or Service Engine Soon Warning Light) The OBD2 Code Information Be Applicable For Hummer: 2009 Hummer H3T Alpha,2008 Hummer HX Concept,2008 Hummer H3 Wagon Concept,2008 Hummer H3 Alpha,2008 Hummer H2,2007…

Hummer P1084 Exhaust Bank 3- Mixture Adaption Range 2 Lower Rich Limit Not Reached

Description Possible causes – Faulty Oxygen Sensor– Oxygen Sensor harness is open or shorted– Oxygen Sensor circuit poor electrical connection Symptoms – Engine Light ON (or Service Engine Soon Warning Light) The OBD2 Code Information Be Applicable For Hummer: 2009 Hummer H3T Alpha,2008 Hummer HX Concept,2008 Hummer H3 Wagon Concept,2008 Hummer H3 Alpha,2008 Hummer H2,2007…

Hummer P1082 Exhaust Bank 3- Mixture Adaption Range 2 Lower Lean Limit Not Reached

Description Possible causes – Faulty Oxygen Sensor– Oxygen Sensor harness is open or shorted– Oxygen Sensor circuit poor electrical connection Symptoms – Engine Light ON (or Service Engine Soon Warning Light) The OBD2 Code Information Be Applicable For Hummer: 2009 Hummer H3T Alpha,2008 Hummer HX Concept,2008 Hummer H3 Wagon Concept,2008 Hummer H3 Alpha,2008 Hummer H2,2007…

Hummer P1081 Exhaust Bank 3- Mixture Adaption Range 1 Lower Lean Limit Not Reached

Description Possible causes – Faulty Oxygen Sensor– Oxygen Sensor harness is open or shorted– Oxygen Sensor circuit poor electrical connection Symptoms – Engine Light ON (or Service Engine Soon Warning Light) The OBD2 Code Information Be Applicable For Hummer: 2009 Hummer H3T Alpha,2008 Hummer HX Concept,2008 Hummer H3 Wagon Concept,2008 Hummer H3 Alpha,2008 Hummer H2,2007…