U3447 Trouble Code

View U3447 obd/2 error code description and symptoms. U3447 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 U3447

As the engine heats up and combustion becomes easier and more complete, the PCM will command the idling control valve to increase the amount of air entering the engine to suit the changing conditions. However, when the load on the engine changes, say, when some electrical consumers or other systems are either turned on or off, the PCM adapts the signal voltage to the idle control valve to ensure that the idling speed remains stable, and at the RPM specified by the manufacturer.

U3447 Error Code Repair Process :

If your cylinder #3 high to low side open 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 U3447 and engine control unit are in charge of monitoring a bunch of different cylinder #3 high to low side open, and if they get a reading that's a little out of whack, up pops the check engine light.

U3447 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.

Common Causes of U3447

A common cause of code U3447 is the failure of Cylinder #3 High To Low Side Open, but there are several other possible causes as well, such as ;

Continuous oil flow to the VCT piston chamber
Exhaust tube
Fuel pressure
Incorrect Positive Crankcase Ventilation (PCV) hose connection

U3447 code for all cars

You can view according U3447 DTC for your car model. We selected several models to see obd2 solutions click and view it.

+U3447 Mazda Chante

+U3447 Sbarro Ionos

+U3447 Oldsmobile Profile

+U3447 Mercedes E 430

+U3447 Dodge 600

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

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