P3977 Nissan 1-tonner OBD Code

OBD/2 P3977 error code description and symptoms.

Vehicle Speed Sensor (VSS) Intermittent Indicates the powertrain control module (PCM) detected an error in the vehicle speed information. Vehicle speed data is received from either the vehicle speed sensor (VSS), transfer case speed sensor (TCSS), anti-lock brake system (ABS) control module, generic electronic module (GEM), or central timer module (CTM). This DTC is set the same way as P3977. However, it is intended to flash the transmission control indicator lamp (TCIL) for first time VSS circuit error/malfunctions. Refer to possible causes for P3977

To check for an open circuit, trace along the length of the transmission control circuit, checking for breaks in the wiring. Repair any broken wiring and make sure all connectors are fully seated and locked.Pay close attention to connectors, looking for corrosion, bent or broken pins, or moisture in the connector. Repair any connector issues even if they are not specifically part of the transmission control circuit as they may serve a function in providing power to the transmission control circuit.

P3977 Nissan 1-tonner Error Code Repair Process :

When you turn on the ignition, the Service Engine Soon or Check Engine P3977 light should flash briefly, indicating that the OBD system is ready to scan your vehicle for any malfunctions. After this brief flash, the light should stay off while you drive as long as no problems are detected. If scp (j1850) invalid or missing data for wheels so, you'll be glad to know that your vehicle is equipped with an early warning system that could save you time, money, and fuel in addition to helping protect the scp (j1850) invalid or missing data for wheels.

Common Causes of Nissan 1-tonner P3977 OBD2 Code

A common cause of code P3977 is the failure of SCP (J1850) Invalid or Missing Data for Wheels, but there are several other possible causes as well, such as ;

EVAP system hose leaking
Faulty ignition coil (s)
Intake Valve Timing Control Solenoid Valve harness is open or shorted
Ignition coils circuit poor electrical connection

P3977 is a kind of Powertrain Trouble Code

Powertrain of a modern automobile, comprising engine (with exhaust system), transmission, drive shaft, suspension and the wheels. In a motor vehicle, the term powertrain or powerplant describes the main components that generate power and deliver it to the road surface, water, or air.

Engine OBD 2 Codes website is a freeware resource center for engine trouble codes.

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P3977 Nissan 1-tonner OBD Code

P3977 Nissan 1-tonner Error Code Repair Process :

Common Causes of Nissan 1-tonner P3977 OBD2 Code

P3977 code for other Nissan cars