U2940 Mercedes-benz Clk Class OBD Code

OBD/2 U2940 error code description and symptoms.

Engine Coolant Temperature (ECT) Circuit High Input Indicates the sensor signal is greater than Self-Test maximum. The ECT sensor maximum is 4.6 volts or -50 C (-58 F). Note on some vehicles that are not equipped with an ECT sensor, CHT can be used and can set this DTC. Open circuit in harness Sensor signal short to power Damaged PCM Improper harness connection Damaged sensor ECT V PID reading greater than 4.6 volts with key ON and engine OFF or during any engine operating mode indicates a hard fault.

Gear changes are accomplished by a command from the TCM to energize the clutch actuator to release the clutch; after which various actuators inside the transmission disengage the current gear, and depending on current operating conditions, engage the next higher or lower gear ratio. All of this happens much faster than a human driver could change gears, and in most applications, gear changes are as smooth and seamless as on any fully automatic transmission.

U2940 Mercedes-benz Clk Class Error Code Repair Process :

If your transmission over temperature condition 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 U2940 and engine control unit are in charge of monitoring a bunch of different transmission over temperature condition, and if they get a reading that's a little out of whack, up pops the check engine light.

Common Causes of Mercedes-benz Clk Class 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 ;

Engine Control Module (ECM)
Faulty Mass Air Flow (MAF) sensor
Faulty Camshaft Position Sensor
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.

About Us | Contact | Privacy

U2940 Mercedes-benz Clk Class OBD Code

U2940 Mercedes-benz Clk Class Error Code Repair Process :

Common Causes of Mercedes-benz Clk Class U2940 OBD2 Code

U2940 code for other Mercedes-benz cars