U3977 DTC For Mercedes Benz Gclass

Mercedes Benz Gclass Engine Specifications:
Engine Type :Single Cylinder Engine
Cylinder Type :V-Type Engine
Engine Air Intake Process :Turbocharged Engine

Your Mercedes Benz Gclass engine control system detects a problem, the computer stores the diagnostic trouble code U3977 in its memory. To figure out what is wrong with your vehicle you must first extract the U3977 DTC For Mercedes Benz Gclass.

On 1999 and later U3977 Mercedes Benz Gclass engines, the instrument cluster has a built-in self-diagnostic mode that can be accessed by pressing and holding the instrument cluster SELECT/RESET button. Insert the ignition key and turn to the RUN position (but don't crank or start engine). Continue to press and hold the SELECT/RESET button (for 5 seconds) until the word TEST is displayed by the odometer. Release the SELECT/RESET button within three seconds after the word TEST is displayed to begin the self-diagnostic mode.

U3977 Mercedes Benz Gclass DTC Meaning

U Network Code - Problem is climate control system, lighting, airbags, etc.
3 SAE - Generic
9 Transmission
7 Exhaust Gas Recirculation System Valve 1
7 Cruise Control System - Vehicle Accel Too High

The rule of U3977 Mercedes Benz Gclass code when it comes to emissions-related vehicle repair is that any modification that changes the vehicle from a certified configuration to a non-certified configuration is considered tampering: this applies to both vehicle owners and repair facilities and is, therefore, a Federal offense. Replacing a catalyst with a straight pipe is one traditional example of U3977. Likewise, overriding the OBD U3977 DTC For Mercedes Benz Gclass system through the use of high-tech defeat devices or non-certified computer chips, for example, would also be considered tampering. The OBD system may, however, be repaired back to its original certified configuration with certified performance chips or appropriate aftermarket parts.

U3976 DTC (Previous DTC Code) ( Next DTC Code ) U3978 DTC
You can also check other Mercedes car models :
The listed Mercedes models will give information about U3977 DTC.