P1148 Mercedes-benz Vision OBD Code

OBD/2 P1148 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 P1148

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.

P1148 Mercedes-benz Vision Error Code Repair Process :

If your p1148 closed loop control function bank 1 check engine light is illuminated, it's best to take it in for diagnostic testing, which can feel like a hassle. Because while the lights vary in appearance from vehicle to vehicle, all have the same basic meaning: There's a problem with the car's emissions system. The on-board diagnostics system P1148 and engine control unit are in charge of monitoring a bunch of different p1148 closed loop control function bank 1, and if they get a reading that's a little out of whack, up pops the check engine light.

Common Causes of Mercedes-benz Vision P1148 OBD2 Code

A common cause of code P1148 is the failure of P1148 Closed Loop Control Function Bank 1, but there are several other possible causes as well, such as ;

Continuous oil flow to the VCT piston chamber
Faulty spark plug (s)
Intake Valve Timing Control Solenoid Valve circuit poor electrical connection
Exhaust tube

P1148 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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P1148 Mercedes-benz Vision OBD Code

P1148 Mercedes-benz Vision Error Code Repair Process :

Common Causes of Mercedes-benz Vision P1148 OBD2 Code

P1148 code for other Mercedes-benz cars