U0701 Mercedes-benz A Class OBD Code

OBD/2 U0701 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) U0701 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.

U0701 Mercedes-benz A Class Error Code Repair Process :

The scent may U0701 signal oil or coolant leaking from their normally closed-loop systems, or it may indicate dangerous exhaust gases invading your car's interior. Car and truck exhaust contains toxic gases such U0701, so if the inside of your car pump rotor control underfueling as if you were standing behind your car, get out and get it fixed. Fight the urge to take a little nap first. So sleepy. That's the carbon monoxide talking, friends. At least open a window on your way to the shop.

Common Causes of Mercedes-benz A Class U0701 OBD2 Code

A common cause of code U0701 is the failure of Pump Rotor Control Underfueling, but there are several other possible causes as well, such as ;

Camshaft advance mechanism binding (VCT unit)
Failures of clutch motion/travel sensors.
Faulty Air fuel ratio (A/F) Sensor 1 Bank 1
Variable Camshaft Timing (VCT) position circuit poor electrical connection

U0701 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.

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U0701 Mercedes-benz A Class OBD Code

U0701 Mercedes-benz A Class Error Code Repair Process :

Common Causes of Mercedes-benz A Class U0701 OBD2 Code

U0701 code for other Mercedes-benz cars