Possible causes – Faulty throttle position sensor– Throttle position sensor harness is open or shorted– Throttle position sensor circuit poor electrical connection– Faulty accelerator pedal position sensor When is the code detected? An excessively high voltage from the Throttle Position

Possible causes – Faulty Throttle position sensor– Throttle position sensor harness is open or shorted– Throttle position sensor poor electrical connection– Faulty accelerator pedal position sensor When is the code detected? An excessively high voltage from the Throttle Position Sensor

Possible causes – Faulty Throttle position sensor– Throttle position sensor harness is open or shorted– Throttle position sensor poor electrical connection– Faulty accelerator pedal position sensor When is the code detected? An excessively low voltage from the Throttle Position Sensor

Possible causes – Faulty torque converter clutch solenoid valve– Torque converter clutch solenoid valve harness is open or shorted– Torque converter clutch solenoid valve circuit poor electrical connection– Low transmission fluid level– Dirty transmission fluid Tech notes When the a

Possible causes – Faulty Transmission Control Module (TCM)– Transmission Control Module harness is open or shorted– Transmission Control Module circuit ppor electrical connection Symptoms – Engine Light ON (or Service Engine Soon Warning Light) P0613 INFINITI Description The Engine Control

Possible causes – Faulty Transmission Fluid Temperature Sensor– Transmission Fluid Temperature Sensor harness is open or shorted– Transmission Fluid Temperature Sensor circuit poor electrical connection When is the code detected? Transmission Control Module (TCM) detects excessively high voltage from the

Possible causes – Faulty Transmission Fluid Temperature Sensor– Transmission Fluid Temperature Sensor harness is open or shorted– Transmission Fluid Temperature Sensor circuit poor electrical connection When is the code detected? Transmission Control Module (TCM) detects excessively low or high voltage

Possible causes – Faulty Transmission Fluid Temperature Sensor– Transmission Fluid Temperature Sensor harness is open or shorted– Transmission Fluid Temperature Sensor circuit poor electrical connection When is the code detected? Transmission Control Module (TCM) detects excessively low or high voltage

Possible causes – Faulty Transmission Fluid Temperature Sensor– Transmission Fluid Temperature Sensor harness is open or shorted– Transmission Fluid Temperature Sensor circuit poor electrical connection When is the code detected? Transmission Control Module (TCM) detects excessively low voltage from the

Possible causes – Faulty Transmission Speed Sensor– Transmission Speed Sensor harness is open or shorted– Transmission Speed Sensor circuit poor electrical connection When is the code detected? Diagnostic Trouble Code (DTC) P0715 is detected when TCM or ECM does not

Possible causes – Faulty Transmission Speed Sensor– Transmission Speed Sensor harness is open or shorted– Transmission Speed Sensor circuit poor electrical connection When is the code detected? Diagnostic Trouble Code (DTC) P0717 is detected when TCM or ECM receives no

Possible causes – Faulty Vehicle Speed Sensor– Vehicle speed sensor harness or connectors is open or shorted– Vehicle speed sensor circuit poor electrical connection– Faulty Engine Control Module (ECM) Tech notes On most Infiniti models the Vehicle Speed Sensor (VSS)

Possible causes – Heated Oxygen Sensor (H2OS) Bank 2 Sensor 1 harness is open shorted to ground– Heated Oxygen Sensor (H2OS) Bank 2 Sensor 1 circuit poor electrical connection– Faulty Heated Oxygen Sensor (H2OS) Bank 2 Sensor 1– Heated Oxygen

Possible causes – Improper idle speed– The IACV-AAC valve harness is open or shorted– The IACV-AAC valve circuit poor electrical connection– Faulty IACV-AAC valve– Faulty Engine Control Module (ECM) Tech notes P0505 Ecm IAC issue 2000 & 2001 I30 Part

Possible causes – Improper idle speed– The IACV-AAC valve harness is open or shorted– The IACV-AAC valve circuit poor electrical connection– Faulty IACV-AAC valve– Faulty Engine Control Module (ECM) Tech notes P0505 Ecm IAC issue 2000 & 2001 I30 Part

Possible causes – Improper idle speed– The IACV-AAC valve harness is open or shorted– The IACV-AAC valve circuit poor electrical connection– Faulty IACV-AAC valve– Faulty Engine Control Module (ECM) Tech notes P0505 Ecm IAC issue 2000 & 2001 I30 Part

Possible causes – Intake air leaks– Faulty front heated oxygen sensor– Ignition misfiring – Faulty fuel injectors – Exhaust gas leaks– Incorrect fuel pressure– Lack of fuel– Faulty Mass Air Flow (MAF) sensor– Incorrect Positive Crankcase Ventilation (PCV) hose connection

Possible causes – Intake air leaks– Faulty front heated oxygen sensor– Ignition misfiring– Faulty fuel injectors– Exhaust gas leaks– Incorrect fuel pressure– Lack of fuel– Faulty Mass Air Flow (MAF) sensor– Incorrect Positive Crankcase Ventilation (PCV) hose connection Tech notes

Possible causes – Intake air leaks– Faulty front heated oxygen sensor– Ignition misfiring– Faulty fuel injectors– Exhaust gas leaks– Incorrect fuel pressure– Lack of fuel– Faulty Mass Air Flow (MAF) sensor– Incorrect Positive Crankcase Ventilation (PCV) hose connection Tech notes

Possible causes – Leaking or stuck open thermostat– Low engine coolant level– Insufficient warm up time– Faulty engine coolant temperature sensor– Engine coolant temperature sensor harness is open or shorted– Engine coolant temperature sensor circuit poor electrical connection Tech notes