P3948 Trouble Code

View P3948 obd/2 error code description and symptoms. P3948 engine photo

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 P3948

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.

P3948 Error Code Repair Process :

For scp (j1850) invalid or missing data for primary id 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. P3948 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 scp (j1850) invalid or missing data for primary id with your car's computers to find out exactly what's prompting the light to turn on.

P3948 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.

Common Causes of P3948

A common cause of code P3948 is the failure of SCP (J1850) Invalid or Missing Data for Primary Id, but there are several other possible causes as well, such as ;

Continuous oil flow to the VCT piston chamber
Damaged ECM
Improper ignition timing
Camshaft Position Sensor harness is open or shorted

P3948 code for all cars

You can view according P3948 DTC for your car model. We selected several models to see obd2 solutions click and view it.

+P3948 Peugeot Tepee

+P3948 Ducati Multistrada

+P3948 Lexus Es

+P3948 Nissan Rogue 2

+P3948 Daihatsu Domino

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

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