Possible causes – Engine mechanical condition– Faulty Manifold Absolute Pressure (MAP) sensor– Manifold Absolute Pressure (MAP) sensor harness is open or shorted– Manifold Absolute Pressure (MAP) sensor circuit poor electrical connection Symptoms – Engine Light ON (or Service Engine Soon

Possible causes – Exhaust leak– Fuel pressure low– Vacuum leak– Engine mechanical condition Symptoms – Engine Light ON (or Service Engine Soon Warning Light)

Possible causes – Faulty Accelerator Pedal Position (APP) Sensor– Faulty Throttle Position Sensor (TPS)– Faulty throttle control motor Symptoms – Engine Light ON (or Service Engine Soon Warning Light)

Possible causes – Faulty Engine Coolant Temperature (ECT) sensor– Low engine coolant level– Engine Coolant Temperature (ECT) sensor harness is open or shorted– Engine Coolant Temperature (ECT) sensor electrical circuit poor connection– Faulty engine coolant thermostat Symptoms – Engine Light

Possible causes – Faulty Engine Coolant Temperature (ECT) sensor– Low engine coolant level– Engine Coolant Temperature (ECT) sensor harness is open or shorted– Engine Coolant Temperature (ECT) sensor electrical circuit poor connection– Faulty engine coolant thermostat Symptoms – Engine Light

Possible causes – Faulty Fuel Pressure Sensor– Fuel Pressure Sensor harness is open or shorted– Fuel Pressure Sensor circuit poor electrical connection– Fuel system leak– Faulty fuel injector Symptoms – Engine Light ON (or Service Engine Soon Warning Light)

Possible causes – Faulty Heated Oxygen Sensor (HO2S) Bank 1 Sensor 1– Heated Oxygen Sensor (HO2S) Bank 1 Sensor 1 harness is open or shorted– Heated Oxygen Sensor (HO2S) Bank 1 Sensor 1 circuit poor electrical conection– Air leak in

Possible causes – Faulty HO2S Bank 1 Sensor 1– HO2S Bank 1 Sensor 1 harness is open or shorted– HO2S Bank 1 Sensor 1 circuit poor electrical connection Symptoms – Engine Light ON (or Service Engine Soon Warning Light)

Possible causes – Faulty Ignition Coil– Ignition Coil harness is open or shorted– Ignition Coil circuit poor electrical connection– Faulty ION Sensor Module Symptoms – Engine Light ON (or Service Engine Soon Warning Light)

Possible causes – Faulty Intake Air Temperature Sensor– Intake Air Temperature Sensor harness is open or shorted– Intake Air Temperature Sensor circuit poor electrical connection When is the code detected? The P1111 code is set when the Powertrain Control Module

Possible causes – Faulty Intake Air Temperature Sensor– Intake Air Temperature Sensor harness is open or shorted– Intake Air Temperature Sensor circuit poor electrical connection Symptoms – Engine Light ON (or Service Engine Soon Warning Light) P1112 ISUZU Description The

Possible causes – Faulty Manifold Absolute Pressure (MAP) sensor– Manifold Absolute Pressure (MAP) sensor harness is open or shorted– Manifold Absolute Pressure (MAP) sensor circuit poor electrical connection Symptoms – Engine Light ON (or Service Engine Soon Warning Light) P1107

Possible causes – Faulty Manifold Absolute Pressure (MAP) sensor– Manifold Absolute Pressure (MAP) sensor harness is open or shorted– Manifold Absolute Pressure (MAP) sensor circuit poor electrical connection Symptoms – Engine Light ON (or Service Engine Soon Warning Light) P1108

Possible causes – Faulty Mass Air Flow Sensor– Air leak before or after sensor– Mass Air Flow Sensor harness is open or shorted– Mass Air Flow Sensor circuit poor electrical connection Symptoms – Engine Light ON (or Service Engine Soon

Possible causes – Faulty oxygen sensor– Air leak near sensor– Low fuel pressure– Faulty Mass Air Flow (MAF) signal– Fualty Manifold Absolut Pressure (MAP) signal Symptoms – Engine Light ON (or Service Engine Soon Warning Light)

Possible causes – Faulty Throttle Position Sensor– Throttle Position Sensor harness is open or shorted– Throttle Position Sensor circuit poor electrical connection Symptoms – Engine Light ON (or Service Engine Soon Warning Light)

Possible causes – Faulty Throttle Position Sensor– Throttle Position Sensor harness is open or shorted– Throttle Position Sensor circuit poor electrical connection Symptoms – Engine Light ON (or Service Engine Soon Warning Light)

Possible causes – Faulty Vacuum Switching Valve (VSV)– Vacuum Switching Valve (VSV) harness is open or shorted– Vacuum Switching Valve (VSV) circuit poor electrical connection– Faulty Pressure Sensor– Faulty Air Switching Valve When is the code detected? If the Engine

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 – Immobilizer control unit failure-ECM failure– Poor electrical connection Symptoms – Engine Light ON (or Service Engine Soon Warning Light)