C3815 Trouble Code

View C3815 obd/2 error code description and symptoms. C3815 engine photo

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 C3815. However, it is intended to flash the transmission control indicator lamp (TCIL) for first time VSS circuit error/malfunctions. Refer to possible causes for C3815

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.

C3815 Error Code Repair Process :

For accelerometer rear circuit signal is not sensed check engine light is perhaps the most troubling of lights because it could mean so many different things, from you didn't screw the gas cap on tightly enough to look out for pistons flying through the hood and into the stratosphere. The easiest way to find out what this light is telling you is to hook your vehicle up to a scan tool. C3815 error code diagnostic tool looks a little like an oversized calculator and plugs into a communication port inside the car. After you instruct it to perform the scan, it speaks accelerometer rear circuit signal is not sensed with your car's computers to find out exactly what's prompting the light to turn on.

C3815 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.

Common Causes of C3815

A common cause of code C3815 is the failure of Accelerometer Rear Circuit Signal Is Not Sensed, but there are several other possible causes as well, such as ;

EVAP system hose leaking
Faulty spark plug (s)
Fuel Injectors circuit poor electrical connection
Ignition coils harness is open or shorted

C3815 code for all cars

You can view according C3815 DTC for your car model. We selected several models to see obd2 solutions click and view it.

+C3815 Venturi Coupe

+C3815 Plymouth Laser

+C3815 Acura Legend

+C3815 Ram 1500

+C3815 Chevrolet Sabia

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