U2940 Mercedes Sl 65 OBD Code

OBD/2 U2940 error code description and symptoms.

The input turbine speed sensor detects rotation of the input shaft of the input shaft speed sensor transmission. The computer uses that information, along with the output shaft speed sensor to determine if the transmission is operating according to plan. If the computer detects a difference between the input shaft speed , and the expected output shaft speed, it will adjust transmission pump pressure to prevent clutch disc slip. If adding pressure doesn't solve the problem, it will set a trouble code.

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.

U2940 Mercedes Sl 65 Error Code Repair Process :

When you turn on the ignition, the Service Engine Soon or Check Engine U2940 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 transmission over temperature condition 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 transmission over temperature condition.

Common Causes of Mercedes Sl 65 U2940 OBD2 Code

A common cause of code U2940 is the failure of Transmission Over Temperature Condition, but there are several other possible causes as well, such as ;

Faulty Air Flow Meter
Faulty Variable Camshaft Timing (VCT) position solenoid
Camshaft Position Sensor harness is open or shorted
Air fuel ratio (A/F) Sensor 1 Bank 1 circuit poor electrical connection

U2940 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.

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

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U2940 Mercedes Sl 65 OBD Code

U2940 Mercedes Sl 65 Error Code Repair Process :

Common Causes of Mercedes Sl 65 U2940 OBD2 Code

U2940 code for other Mercedes cars