U20EF Nissan Navara OBD Code

OBD/2 U20EF error code description and symptoms.

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) U20EF DTC is a check of the VCT unit.

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.

U20EF Nissan Navara Error Code Repair Process :

If your column reach motor stalled 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 U20EF and engine control unit are in charge of monitoring a bunch of different column reach motor stalled, and if they get a reading that's a little out of whack, up pops the check engine light.

Common Causes of Nissan Navara U20EF OBD2 Code

A common cause of code U20EF is the failure of Column Reach Motor Stalled, but there are several other possible causes as well, such as ;

Camshaft advance mechanism binding (VCT unit)
Faulty Camshaft Position Sensor
Intake Valve Timing Control Solenoid Valve harness is open or shorted
Air fuel ratio (A/F) Sensor 1 Bank 1 circuit poor electrical connection

U20EF 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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U20EF Nissan Navara OBD Code

U20EF Nissan Navara Error Code Repair Process :

Common Causes of Nissan Navara U20EF OBD2 Code

U20EF code for other Nissan cars