U0394 Trouble Code

View U0394 obd/2 error code description and symptoms. U0394 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) U0394 DTC is a check of the VCT unit.

To check for an open circuit, trace along the length of the transmission control circuit, checking for breaks in the wiring. Repair any broken wiring and make sure all connectors are fully seated and locked.Pay close attention to connectors, looking for corrosion, bent or broken pins, or moisture in the connector. Repair any connector issues even if they are not specifically part of the transmission control circuit as they may serve a function in providing power to the transmission control circuit.

U0394 Error Code Repair Process :

The rule of U0394 code when it comes to emissions-related vehicle repair is that any modification that changes the vehicle from a certified configuration to a non-certified configuration is considered tampering: this applies to both vehicle owners and repair facilities and is, therefore, a Federal offense. Replacing a catalyst with a straight pipe is one traditional example of cylinder 12 misfire detected. Likewise, overriding the OBD U0394 error in system through the use of high-tech defeat devices or non-certified computer chips, for example, would also be considered tampering. The OBD system may, however, be repaired back to its original certified configuration with certified performance chips or appropriate aftermarket parts.

U0394 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 U0394

A common cause of code U0394 is the failure of Cylinder 12 Misfire Detected, but there are several other possible causes as well, such as ;

Camshaft advance mechanism binding (VCT unit)
Faulty ignition coil (s)
Intake air leaks
Fuel tank leaking

U0394 code for all cars

You can view according U0394 DTC for your car model. We selected several models to see obd2 solutions click and view it.

+U0394 Talbot Saoutchik

+U0394 Italdesign Aspid

+U0394 Graf Und Stift Sp

+U0394 Bmw 1

+U0394 Secma F16

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