U0701 Mercedes Cls 55 OBD Code

OBD/2 U0701 error code description and symptoms.

Fuel Rail Pressure Sensor in Range But Low The comprehensive component monitor (CCM) monitors the FRP pressure for acceptable fuel pressure. The test fails when the fuel pressure falls below a calibrated value. Low fuel pressure Damaged FRP sensor Excessive resistance in circuit Low or no fuel A FRP PID value below 551 kpa (80 psi) indicates a failure Low or no fuel A FRP PID value greater than 896 kpa (130 psi) indicates a failure.

One example of this would be when an automatic vehicle in placed in gear. To prevent the added drag from the torque converter and transmission from reducing the idling speed, the PCM will command the idle control valve to allow more air to enter the engine, while at the same time, adjusting the injector pulse width to inject more fuel to suit the increased amount of air. Note that the idle air control valve is closed by the PCM when the throttle plate is opened to prevent excess air from entering the engine.

U0701 Mercedes Cls 55 Error Code Repair Process :

For pump rotor control underfueling check engine light is perhaps the most troubling of lights because it could mean so many different things, from you didn't screw the gas cap on tightly enough to look out for pistons flying through the hood and into the stratosphere. The easiest way to find out what this light is telling you is to hook your vehicle up to a scan tool. U0701 error code diagnostic tool looks a little like an oversized calculator and plugs into a communication port inside the car. After you instruct it to perform the scan, it speaks pump rotor control underfueling with your car's computers to find out exactly what's prompting the light to turn on.

Common Causes of Mercedes Cls 55 U0701 OBD2 Code

A common cause of code U0701 is the failure of Pump Rotor Control Underfueling, but there are several other possible causes as well, such as ;

Erratic camshaft position due to low oil pressure
Faulty Mass Air Flow (MAF) sensor
Engine Control Module (ECM)
Ignition misfiring

U0701 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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U0701 Mercedes Cls 55 OBD Code

U0701 Mercedes Cls 55 Error Code Repair Process :

Common Causes of Mercedes Cls 55 U0701 OBD2 Code

U0701 code for other Mercedes cars