B003A Mercedes-benz E Class OBD Code

OBD/2 B003A 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) B003A 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.

B003A Mercedes-benz E Class Error Code Repair Process :

When you turn on the ignition, the Service Engine Soon or Check Engine B003A 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 o2 sensor circuit malfunction (bank 1 sensor 3) 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 o2 sensor circuit malfunction (bank 1 sensor 3).

Common Causes of Mercedes-benz E Class B003A OBD2 Code

A common cause of code B003A is the failure of O2 Sensor Circuit Malfunction (Bank 1 Sensor 3), but there are several other possible causes as well, such as ;

Camshaft advance mechanism binding (VCT unit)
Damaged ECM
Fuel injectors harness is open or shorted
Continuous oil flow to the VCT piston chamber

B003A 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.

Engine OBD 2 Codes website is a freeware resource center for engine trouble codes.

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B003A Mercedes-benz E Class OBD Code

B003A Mercedes-benz E Class Error Code Repair Process :

Common Causes of Mercedes-benz E Class B003A OBD2 Code

B003A code for other Mercedes-benz cars