U1655 Lotus Evora OBD Code

OBD/2 U1655 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) U1655 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.

U1655 Lotus Evora Error Code Repair Process :

When you turn on the ignition, the Service Engine Soon or Check Engine U1655 light should flash briefly, indicating that the OBD system is ready to scan your vehicle for any malfunctions. After this brief flash, the light should stay off while you drive as long as no problems are detected. If autolamp delay decrease circuit open so, you'll be glad to know that your vehicle is equipped with an early warning system that could save you time, money, and fuel in addition to helping protect the autolamp delay decrease circuit open.

Common Causes of Lotus Evora U1655 OBD2 Code

A common cause of code U1655 is the failure of Autolamp Delay Decrease Circuit Open, but there are several other possible causes as well, such as ;

Camshaft advance mechanism binding (VCT unit)
Engine Control Module (ECM)
Fuel injectors harness is open or shorted
Erratic camshaft position due to low oil pressure

U1655 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.

About Us | Contact | Privacy

U1655 Lotus Evora OBD Code

U1655 Lotus Evora Error Code Repair Process :

Common Causes of Lotus Evora U1655 OBD2 Code

U1655 code for other Lotus cars