B1154 Mercedes-benz Cls Class OBD Code

OBD/2 B1154 error code description and symptoms.

Vehicle Speed Sensor (VSS) Intermittent Indicates the powertrain control module (PCM) detected an error in the vehicle speed information. Vehicle speed data is received from either the vehicle speed sensor (VSS), transfer case speed sensor (TCSS), anti-lock brake system (ABS) control module, generic electronic module (GEM), or central timer module (CTM). This DTC is set the same way as B1154. However, it is intended to flash the transmission control indicator lamp (TCIL) for first time VSS circuit error/malfunctions. Refer to possible causes for B1154

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.

B1154 Mercedes-benz Cls Class Error Code Repair Process :

For power supply sensor circuit open 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. B1154 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 power supply sensor circuit open with your car's computers to find out exactly what's prompting the light to turn on.

Common Causes of Mercedes-benz Cls Class B1154 OBD2 Code

A common cause of code B1154 is the failure of Power Supply Sensor Circuit Open, but there are several other possible causes as well, such as ;

EVAP system hose leaking
Engine Control Module (ECM)
Camshaft Position Sensor harness is open or shorted
Fuel injector leaks

B1154 is a kind of Body Trouble Code

Auto body problems aren't always easy to spot. Diagnosing auto body problems sometimes requires a little know-how. In this section you'll find articles dedicated to teaching you how to diagnose auto body problems.

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

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B1154 Mercedes-benz Cls Class OBD Code

B1154 Mercedes-benz Cls Class Error Code Repair Process :

Common Causes of Mercedes-benz Cls Class B1154 OBD2 Code

B1154 code for other Mercedes-benz cars