C3873 Nissan Alpha OBD Code

OBD/2 C3873 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 C3873. However, it is intended to flash the transmission control indicator lamp (TCIL) for first time VSS circuit error/malfunctions. Refer to possible causes for C3873

One example of this would be when an automatic vehicle in placed in gear. To prevent the added drag from the torque converter and transmission from reducing the idling speed, the PCM will command the idle control valve to allow more air to enter the engine, while at the same time, adjusting the injector pulse width to inject more fuel to suit the increased amount of air. Note that the idle air control valve is closed by the PCM when the throttle plate is opened to prevent excess air from entering the engine.

C3873 Nissan Alpha Error Code Repair Process :

If your left rear center sensor circuit short to vbat check engine light is illuminated, it's best to take it in for diagnostic testing, which can feel like a hassle. Because while the lights vary in appearance from vehicle to vehicle, all have the same basic meaning: There's a problem with the car's emissions system. The on-board diagnostics system C3873 and engine control unit are in charge of monitoring a bunch of different left rear center sensor circuit short to vbat, and if they get a reading that's a little out of whack, up pops the check engine light.

Common Causes of Nissan Alpha C3873 OBD2 Code

A common cause of code C3873 is the failure of Left Rear Center Sensor Circuit Short to Vbat, but there are several other possible causes as well, such as ;

EVAP system hose leaking
Faulty spark plug (s)
Faulty oil control valve (OCV)
Lack of fuel

C3873 is a kind of Chassis Trouble Code

Diagnosing chassis noises can be one of the most frustrating problems technicians face. Fortunately, manufacturers have engineered noise, vibration and harshness (NVH) diagnostic techniques and equipment to find the source of the noise.

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

About Us | Contact | Privacy

C3873 Nissan Alpha OBD Code

C3873 Nissan Alpha Error Code Repair Process :

Common Causes of Nissan Alpha C3873 OBD2 Code

C3873 code for other Nissan cars