P4A55 Mercedes-benz Clk Class OBD Code

OBD/2 P4A55 error code description and symptoms.

The Throttle Position sensor signals the Engine Control Module as to the current position of the engine throttle valve.
The current throttle valve opening is based on the driver's input from the gas pedal. The ECM uses the information from this sensor to help calculate fuel delivery and spark timing.

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.

P4A55 Mercedes-benz Clk Class Error Code Repair Process :

OBD P4A55 code and tailpipe testing are two different approaches to identify vehicles in need of repair. The OBD system looks for broken or malfunctioning emissions control components and , while tailpipe tests sample a vehicle's exhaust to see if it is above or below certain prescribed limits. Given the robust nature of today's emissions control components, it is entirely possible for an individual component to P4A55 malfunction without leading to an immediate increase in emissions at the tailpipe. In such cases, other components (like the catalyst) can temporarily compensate for the part that is broken however, these other components can only do double duty for so long before they, too, begin to malfunction. In addition, OBD also monitors for P4A55 and other malfunctions in the fuel system problems that traditional tailpipe tests were not designed to identify. Most state and local areas also include a gas cap pressure test as part of an emission inspection.

Common Causes of Mercedes-benz Clk Class P4A55 OBD2 Code

A common cause of code P4A55 is the failure of , but there are several other possible causes as well, such as ;

Damaged ECM
Faulty Camshaft Position Sensor
Incorrect Positive Crankcase Ventilation (PCV) hose connection
Intake air leaks

P4A55 is a kind of Powertrain Trouble Code

Powertrain of a modern automobile, comprising engine (with exhaust system), transmission, drive shaft, suspension and the wheels. In a motor vehicle, the term powertrain or powerplant describes the main components that generate power and deliver it to the road surface, water, or air.

Engine OBD 2 Codes website is a freeware resource center for engine trouble codes.

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P4A55 Mercedes-benz Clk Class OBD Code

P4A55 Mercedes-benz Clk Class Error Code Repair Process :

Common Causes of Mercedes-benz Clk Class P4A55 OBD2 Code

P4A55 code for other Mercedes-benz cars