U3867 Trouble Code

View U3867 obd/2 error code description and symptoms. U3867 engine photo

Variable Cam Timing Over-advanced (Bank 1) The comprehensive component monitor (CCM) monitors the VCT position for an over-advanced camshaft timing.
The test fails when the camshaft timing exceeds a maximum calibrated value or remains in an advanced position. Cam timing improperly set No oil flow to the VCT piston chamber Low oil pressure VCT solenoid valve stuck closed Camshaft advance mechanism binding (VCT unit) U3867 DTC is a check of the VCT unit.

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.

U3867 Error Code Repair Process :

If your transmission 4-wheel drive mode select short circuit to ground 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 U3867 and engine control unit are in charge of monitoring a bunch of different transmission 4-wheel drive mode select short circuit to ground, and if they get a reading that's a little out of whack, up pops the check engine light.

U3867 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 U3867

A common cause of code U3867 is the failure of Transmission 4-Wheel Drive Mode Select Short Circuit To Ground, but there are several other possible causes as well, such as ;

Camshaft advance mechanism binding (VCT unit)
Faulty select solenoid
Faulty ignition coil (s)
Foreign matter caught in fuel filler cap

U3867 code for all cars

You can view according U3867 DTC for your car model. We selected several models to see obd2 solutions click and view it.

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

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