U3120 Mercedes-benz 219 OBD Code

OBD/2 U3120 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.

U3120 Mercedes-benz 219 Error Code Repair Process :

When you turn on the ignition, the Service Engine Soon or Check Engine U3120 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 purge flow sensor circuit high input 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 purge flow sensor circuit high input.

Common Causes of Mercedes-benz 219 U3120 OBD2 Code

A common cause of code U3120 is the failure of Purge Flow Sensor Circuit High Input, but there are several other possible causes as well, such as ;

Engine Control Module (ECM)
Faulty Fuel injector
Failures of clutch motion/travel sensors.
Intake Valve Timing Control Solenoid Valve harness is open or shorted

U3120 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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U3120 Mercedes-benz 219 OBD Code

U3120 Mercedes-benz 219 Error Code Repair Process :

Common Causes of Mercedes-benz 219 U3120 OBD2 Code

U3120 code for other Mercedes-benz cars