U043A Mercedes Slk 200 OBD Code

OBD/2 U043A 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) U043A DTC is a check of the VCT unit.

As long as the throttle plate remains closed, the idling speed and quality is controlled by the PCM via the idle control valve, and as can be seen from the above it should be clear that idle control on a gasoline engine is a complex affair. For instance, if the engine is started in sub-zero temperatures, the PCM will command the idling control valve to allow less air to enter the engine to enrich the air/fuel mixture to create a condition which is roughly analogous to how chokes worked on carburetted engines to control idling in cold weather.

U043A Mercedes Slk 200 Error Code Repair Process :

For exhaust gas recirculation sensor a circuit high check engine light is perhaps the most troubling of lights because it could mean so many different things, from you didn't screw the gas cap on tightly enough to look out for pistons flying through the hood and into the stratosphere. The easiest way to find out what this light is telling you is to hook your vehicle up to a scan tool. U043A error code diagnostic tool looks a little like an oversized calculator and plugs into a communication port inside the car. After you instruct it to perform the scan, it speaks exhaust gas recirculation sensor a circuit high with your car's computers to find out exactly what's prompting the light to turn on.

Common Causes of Mercedes Slk 200 U043A OBD2 Code

A common cause of code U043A is the failure of Exhaust Gas Recirculation Sensor A Circuit High, but there are several other possible causes as well, such as ;

Camshaft advance mechanism binding (VCT unit)
Faulty Intake Valve Timing Control Solenoid Valve
Intake Valve Timing Control Solenoid Valve harness is open or shorted
Faulty oil control valve (OCV)

U043A 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

U043A Mercedes Slk 200 OBD Code

U043A Mercedes Slk 200 Error Code Repair Process :

Common Causes of Mercedes Slk 200 U043A OBD2 Code

U043A code for other Mercedes cars