P1720 NISSAN Vehicle Speed Meter Circuit Malfunction

Possible causes – VDC/TCS/ABS to ECM circuit harness is open or shorted– TCM to ECM circuit harness is open or shorted– VDC/TCS/ABS to ECM circuit connectors – TCM to ECM circuit connectors – Faulty revolution sensor When is the obd code mean? Malfunction is detected when ECM detects a difference between two vehicle speed sensor…

P1722 NISSAN Estimated Vehicle Speed Signal

Possible causes – Vehicle speed sensor harness is open or shorted– Vehicle speed sensor circuit poor electrical connection– Faulty Vehicle Speed Sensor When is the obd code mean? There is a big difference between the vehicle speed signal from the ABS actuator and the electric unit (control unit), and the vehicle speed sensor signal. Symptoms…

P0600 NISSAN A/T Control Serial Communication Link Malfunction

Possible causes – The circuit between ECM and A/T control unit is open or shorted– Faulty Engine control Module (ECM)– Engine control Module(ECM) harness is open or shorted– Engine control Module (ECM) cicuit poor electricl connection– Faulty Automatic Transmission Module (TCM)– Low battery voltage– Automatic Transmission Module (TCM) harness is open or shorted– Automatic Transmission…

P1402 2005 NISSAN ALTIMA SEDAN EGR Function Open

Possible causes – The EGR volume control valve circuit harness is open or shorted– EGR volume control valve leaking or stuck open– Faulty EGR temperature sensor Tech description Start by cleaning the EGR valve, if the code persist it may be necessary to replaced the EGR Valve. There is a factory service bulletin for the…

P1402 NISSAN EGR Function Open

Possible causes – The EGR volume control valve circuit harness is open or shorted– EGR volume control valve leaking or stuck open– Faulty EGR temperature sensor Tech description Start by cleaning the EGR valve, if the code persist it may be necessary to replaced the EGR Valve. There is a factory service bulletin for the…

P1217 NISSAN Engine Over Temperature

Possible causes – Thermostat– Cooling fan harness is open or shorted– Cooling fan circuit poor electrical connection– Faulty cooling fan motor– Engine Control Module (ECM) Program – Faulty IPDM E/R – Faulty Cooling fan control module– Radiator hose – Radiator– Radiator cap – Water pump Tech description The most likely cause that will trigger the…

P0420 NISSAN Catalyst System Efficiency Below Threshold Bank 1

Possible causes – Three way catalyst converter Bank 1– Exhaust tube– Intake air leaks– Fuel injectors may be faulty– Fuel injector leaks– Spark plugs may be faulty– Improper ignition timing– Engine Control Module (ECM) Tech description As the code description implies the P0420 code means that the vehicle’s control module has detected that the three-way…

P0430 NISSAN Catalyst System Efficiency Below Threshold Bank 2

Possible causes – Three way catalyst converter Bank 2– Exhaust tube– Intake air leaks– Fuel injectors may be faulty– Fuel injector leaks– Spark plugs may be faulty– Improper ignition timing– Engine Control Module (ECM) Tech description As the code description implies the P0430 code means that the vehicle’s control module has detected that the three-way…

P2100 NISSAN Throttle Control Motor Relay Circuit Open

Possible causes – Throttle Control Motor Relay harness is open– Throttle Control Motor Relay circuit poor electrical connection– Faulty Throttle Control Motor Relay Symptoms – Engine Light ON (or Service Engine Soon Warning Light) P2100 NISSAN OBD Code Description Power supply for the throttle control motor is provided to the Engine Control Module (ECM) via…

P0510 NISSAN Closed Throttle Position Switch Fault

Possible causes – Throttle Position Switch (TPS) Adjustment– Faulty Throttle Position Switch (TPS)– Throttle Position Switch (TPS) harness open or shorted– Throttle Position Switch (TPS) circuit poor electrical connection Tech description Adjusting the Throttle Position Switch (TPS) may take care of the problem, if the problem persist the TPS may need to be replaced. There…