Possible causes – ASCD Steering Switch harness is open or shorted – ASCD Steering Switch circuit poor electrical connection – Faulty ASCD Steering Switch – Faulty Engine Control Module (ECM) When is the obd code mean? An improper voltage signal from the Automatic Speed Control Device (ASCD) steering switch is sent to Engine Control Module…
Tag: INFINITI
P1572 INFINITI Brake Pedal Switch Circuit Malfunction
Possible causes – Brake Pedal Switch harness is open or shorted – Brake Pedal Switch circuit poor electrical connection – Faulty Brake Pedal Switch – Faulty stop lamp switch – Faulty Engine Control Moduele (ECM) When is the obd code mean? When the vehicle speed is above 30 km/h (19 MPH), ON signals from the…
P1229 INFINITI Sensor Power Supply Circuit Shorted
Possible causes – Check harness body ground– Faulty Accelerator Pedal Position (APP) sensor– Faulty Power Steering Pressure (PSP) sensor– Faulty Refrigerant Pressure sensor– Faulty EVAP Control System Pressure sensor Tech description Start by inspecting the connections of the harness to the body grounds. When is the obd code mean? The Engine Control Module (ECM) detects…
P1165 INFINITI Swirl Control Valve Control Vacuum Switch
Possible causes – Clogged hose to Swirl control valve control vacuum check switch– Swirl Control Valve Control Solenoid Valve harness is open or shorted– Swirl Control Valve Control Solenoid Valve circuit poor electrical connection– Faulty Swirl Control Valve Control Solenoid Valve– Faulty Swirl control valve control vacuum check switch Symptoms – Engine Light ON (or…
U1000 INFINITI CAN Communication Line – Signal Malfunction
Possible causes – Controller Area Network (CAN) communication harness is open or shorted– Faulty Engine Control Module (ECM)– Poor harness ground connection. Tech description There is a factory service bulletin for the following Infiniti models: 2002-2004 Infiniti I352002-2006 Infiniti Q452004-2006 Infiniti QX562003-2006 Infiniti FX2003-2006 Infiniti G352003-2004 Infiniti M452006 Infiniti MInfiniti Service Bulletin Code U1000Service bulletin…
P1335 INFINITI Crankshaft Position Sensor
Possible causes – Crankshaft position (CKP) sensor harness is open or shorted – Crankshaft position (CKP) sensor circuit poor electrical connection – Crankshaft position sensor may be faulty – Signal plate may be damage – Starter motor may be faulty – Starting system circuit – Dead or weak battery Tech description – Sometimes and in…
P0014 INFINITI Exhaust Valve Timing Control Performance Bank 1
Possible causes – Dirty Oil– Faulty Exhaust valve timing control solenoid valve– Exhaust valve timing control solenoid valve harness is open or shorted– Exhaust valve timing control solenoid valve circuit poor electrical connection– Faulty Crankshaft position sensor (POS)– Faulty Camshaft position sensor Tech description Since the exhaust valve timing control solenoid valve uses oil flow…
P0012 INFINITI Intake Valve Timing Control Performance Bank 2
Possible causes – Dirty or low engine oil– Faulty Intake valve timing control solenoid valve– Crankshaft position sensor (POS) may be faulty– Camshaft position sensor– Intake valve timing control solenoid valve harness is open or shorted– Intake valve timing control solenoid valve circuit poor electrical connection Tech description Since the Intake valve timing control solenoid…
P0506 INFINITI Idle Speed Control System RPM Lower Than Expected
Possible causes – Dirty throttle body– Electric throttle control actuator misadjusted or damaged– Faulty Electric throttle control actuator– Intake air leak– Poor electrical connection to the Intake Air Control (IAC) valve Tech description If there are no intake leaks, clean throttle body, adjust engine idle and erase engine code. If the code comes back you…
P0507 INFINITI Idle Speed Control System RPM Higher Than Expected
Possible causes – Dirty throttle body– Electric throttle control actuator misadjusted or damaged– Faulty Electric throttle control actuator– Intake air leak– Poor electrical connection to the Intake Air Control (IAC) valve Tech description If there are no intake leaks, clean throttle body, adjust engine idle and erase engine code. If the code comes back you…