B0928 Trouble Code

View B0928 obd/2 error code description and symptoms. B0928 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) B0928 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.

B0928 Error Code Repair Process :

If your torque converter clutch solenoid failed on 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 B0928 and engine control unit are in charge of monitoring a bunch of different torque converter clutch solenoid failed on, and if they get a reading that's a little out of whack, up pops the check engine light.

B0928 is a kind of Body Trouble Code

Auto body problems aren't always easy to spot. Diagnosing auto body problems sometimes requires a little know-how. In this section you'll find articles dedicated to teaching you how to diagnose auto body problems.

Common Causes of B0928

A common cause of code B0928 is the failure of Torque Converter Clutch Solenoid Failed On, but there are several other possible causes as well, such as ;

Camshaft advance mechanism binding (VCT unit)
Damaged ECM
Fuel Injectors circuit poor electrical connection
Faulty Camshaft Position Sensor

B0928 code for all cars

You can view according B0928 DTC for your car model. We selected several models to see obd2 solutions click and view it.

+B0928 Subaru Impreza 3

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