Your Mercedes Benz Sl Class engine control system detects a problem, the computer stores the diagnostic trouble
code B2389 in its memory.
To figure out what is wrong with your vehicle you must first extract the B2389 DTC For Mercedes Benz Sl Class.
B2389 Mercedes Benz Sl Class 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.)
B2389 Mercedes Benz Sl Class DTC Meaning
Body Code - Problem is antilock brake system, electronic suspension and steering systems.
MFG - Manufacturer Specific
IC Module 4X Ref Circuit Intermittent, No Pulses
Crankshaft Position Sensor Circuit Performance
A/C System High Pressure High Temperature
If your vehicle failed a B2389 Mercedes Benz Sl Class test and the B2389 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 B2389 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 B2389 DTC For Mercedes Benz Sl Class: Any conditions that might cause ignition misfire, an overly rich or lean fuel condition, or loss of compression.