Possible causes – Faulty Throttle Control Motor – Throttle Control Motor harness is open or shorted – Throttle Control Motor circuit poor electrical connection When is the code detected? Engine Control Module (ECM) detects short both circuits between ECM and
Possible causes – Check fuel trim values – rich or lean air/fuel ratio– Open or short circuit condition– Manifold Absolute Pressure (MAP) Sensor faulty– Engine Coolant Temperature (ECT) sensor faulty– Faulty oxygen sensor Symptoms – Engine Light ON (or Service
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 – 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 – 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 – Faulty Mass Air Flow (MAF) sensor– Low fuel pressure– Vacuum leak on engine– Faulty HO2S bank 1 Symptoms – Engine Light ON (or Service Engine Soon Warning Light)
Possible causes – Faulty Mass Air Flow (MAF) sensor– Low fuel pressure– Vacuum leak on engine– Faulty HO2S bank 1 Symptoms – Engine Light ON (or Service Engine Soon Warning Light) AUDI Technical Service Bulletins for P1128 code 2000 AUDI
Possible causes – Faulty Throttle Control Motor– Throttle Control Motor harness is open or shorted– Throttle Control Motor circuit poor electrical connection When is the code detected? Engine Control Module (ECM) detects short both circuits between ECM and throttle control
Possible causes – Faulty Throttle Control Motor– Throttle Control Motor harness is open or shorted– Throttle Control Motor circuit poor electrical connection When is the code detected? Engine Control Module (ECM) detects short both circuits between ECM and throttle control
Possible causes – Faulty Throttle Control Motor– Throttle Control Motor harness is open or shorted– Throttle Control Motor circuit poor electrical connection When is the code detected? Engine Control Module (ECM) detects short both circuits between ECM and throttle control
Possible causes – Faulty Throttle Control Motor– Throttle Control Motor harness is open or shorted– Throttle Control Motor circuit poor electrical connection When is the code detected? Engine Control Module (ECM) detects short both circuits between ECM and throttle control
Possible causes – Fuel delivery system– Manifold Absolute Pressure (MAP) sensor or wiring connectors– O2 sensor wiring or connectors– Engine mechanical system– Faulty Powertrain Control Module (PCM) Symptoms – Engine Light ON (or Service Engine Soon Warning Light) P1128 DODGE
Possible causes – Fuel delivery system– Manifold Absolute Pressure (MAP) sensor or wiring connectors– O2 sensor wiring or connectors– Engine mechanical system– Faulty Powertrain Control Module (PCM) Symptoms – Engine Light ON (or Service Engine Soon Warning Light) P1128 CHRYSLER
Possible causes – Fuel delivery system– Manifold Absolute Pressure (MAP) sensor or wiring connectors– O2 sensor wiring or connectors– Engine mechanical system– Faulty Powertrain Control Module (PCM) Symptoms – Engine Light ON (or Service Engine Soon Warning Light) P1128 JEEP
Possible causes – Low fuel pressure-Fuel filter plugged– Faulty fuel pump– Engine mechanical condition– Large vacuum leak Symptoms – Engine Light ON (or Service Engine Soon Warning Light)
Possible causes – Switch O2 sensor connectors Symptoms – Engine Light ON (or Service Engine Soon Warning Light) P1128 FORD Description Engine Control Module (ECM) made a fuel correction and detected the O2 sensor connected incorrectly
Symptoms – Engine Light ON (or Service Engine Soon Warning Light)