U0991 DTC For Mercedes Benz Rclass

Mercedes Benz Rclass Engine Specifications:
Engine Type :Single Cylinder Engine
Cylinder Type :Opposite Piston Engine
Engine Air Intake Process :Supercharged Engine

Your Mercedes Benz Rclass engine control system detects a problem, the computer stores the diagnostic trouble code U0991 in its memory. To figure out what is wrong with your vehicle you must first extract the U0991 DTC For Mercedes Benz Rclass.

U0991 Mercedes Benz Rclass engine problem can be occur defective fan clutches are a common and often overlooked cause of engine overheating. The shear characteristics of the clutch fluid gradually deteriorates over time, with an average loss in drive efficiency of about 200 rpm per year. Eventually slippage reaches the point where effective cooling is no longer possible and overheating results. (On average, the life of a fan clutch is about the same as a water pump. If one needs to be replaced, the other usually does too.)

U0991 Mercedes Benz Rclass DTC Meaning

U Network Code - Problem is climate control system, lighting, airbags, etc.
0 SAE - Generic
9 Transmission
9 TP Sensor Learn Not Complete
1 PCM Stack Overrun

If your vehicle failed a U0991 Mercedes Benz Rclass test and the U0991 Check Engine Light is NOT on, chances are you have a problem with the OBDII system, a burned out MIL lamp, or a faulty catalytic converter. The converter is essentially an afterburner that cleans up the exhaust after it exits the engine. The OBDII system uses U0991 a ownstream oxygen sensor to monitor the efficiency of the converter, and it should detect a drop in converter efficiency if the converter has been contaminated or is failing (ignition misfiring, leaky exhaust valves, and oil burning can all damage the converter). What you want to look U0991 DTC For Mercedes Benz Rclass: Any conditions that might cause ignition misfire, an overly rich or lean fuel condition, or loss of compression.

U0990 DTC (Previous DTC Code) ( Next DTC Code ) U0992 DTC
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The listed Mercedes models will give information about U0991 DTC.