U2912 Mercedes S 560 OBD Code

OBD/2 U2912 error code description and symptoms.

The Transmission Fluid Pressure Switch allows the engine's control module (PCM) or Transmission Control Module (TCM) to use hydraulic fluid to engage the clutches in the transmission to allow for smoother shifting while driving. If the PCM or TCM detects an issue with the hydraulic clutch or the pressure switch, the PCM or TCM will set code U2912

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.

U2912 Mercedes S 560 Error Code Repair Process :

When you turn on the ignition, the Service Engine Soon or Check Engine U2912 light should flash briefly, indicating that the OBD system is ready to scan your vehicle for any malfunctions. After this brief flash, the light should stay off while you drive as long as no problems are detected. If fuel rail pressure sensor circuit malfunction so, you'll be glad to know that your vehicle is equipped with an early warning system that could save you time, money, and fuel in addition to helping protect the fuel rail pressure sensor circuit malfunction.

Common Causes of Mercedes S 560 U2912 OBD2 Code

A common cause of code U2912 is the failure of Fuel Rail Pressure Sensor Circuit Malfunction, but there are several other possible causes as well, such as ;

Continuous oil flow to the VCT piston chamber
Engine Control Module (ECM)
Improper ignition timing
Faulty ignition coil (s)

U2912 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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U2912 Mercedes S 560 OBD Code

U2912 Mercedes S 560 Error Code Repair Process :

Common Causes of Mercedes S 560 U2912 OBD2 Code

U2912 code for other Mercedes cars