U3104 Trouble Code

View U3104 obd/2 error code description and symptoms. U3104 engine photo

The Throttle Position sensor signals the Engine Control Module as to the current position of the engine throttle valve.
The current throttle valve opening is based on the driver's input from the gas pedal. The ECM uses the information from this sensor to help calculate fuel delivery and spark timing.

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.

U3104 Error Code Repair Process :

If your evaporative emission control system vent control circuit shorted 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 U3104 and engine control unit are in charge of monitoring a bunch of different evaporative emission control system vent control circuit shorted, and if they get a reading that's a little out of whack, up pops the check engine light.

U3104 is a kind of Network Trouble Code

U-code indicates that engine communication errors and shows lost communication with engine parts.U-Codes are fairly straight forward, given all of the articles and technical publications that have been written regarding these problematic codes. In most cases, it just comes down to identifying the module that isn't communicating with the other modules on the CAN bus line for whatever reason.

Common Causes of U3104

A common cause of code U3104 is the failure of Evaporative Emission Control System Vent Control Circuit Shorted, but there are several other possible causes as well, such as ;

Damaged ECM
Faulty Mass Air Flow (MAF) sensor
Fuel injectors may be faulty
Oil Control Valve (OCV) circuit is open or shorted

U3104 code for all cars

You can view according U3104 DTC for your car model. We selected several models to see obd2 solutions click and view it.

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

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