C0958 Mercedes S 300 OBD Code

OBD/2 C0958 error code description and symptoms.

Catalytic converters must be warm before they can work properly. On a cold start the PCM provides a rich mixture to keep the cold engine running.
All that extra fuel goes into the catalytic converter. But the exhaust isn't very hot, because, ah, the engine is pretty cold. GM has employed several strategies to fire up the catalytic converter quicker and reduce cold start emissions. One way is to use a secondary air pump that pumps outside air directly into the catalytic converter.

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.

C0958 Mercedes S 300 Error Code Repair Process :

When you turn on the ignition, the Service Engine Soon or Check Engine C0958 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 abs outlet valve coil rf circuit short to ground 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 abs outlet valve coil rf circuit short to ground.

Common Causes of Mercedes S 300 C0958 OBD2 Code

A common cause of code C0958 is the failure of ABS Outlet Valve Coil RF Circuit Short To Ground, but there are several other possible causes as well, such as ;

Dirty Oil
Faulty Fuel injector
Air fuel ratio (A/F) Sensor 1 Bank 1 circuit poor electrical connection
Faulty front heated oxygen sensor

C0958 is a kind of Chassis Trouble Code

Diagnosing chassis noises can be one of the most frustrating problems technicians face. Fortunately, manufacturers have engineered noise, vibration and harshness (NVH) diagnostic techniques and equipment to find the source of the noise.

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

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C0958 Mercedes S 300 OBD Code

C0958 Mercedes S 300 Error Code Repair Process :

Common Causes of Mercedes S 300 C0958 OBD2 Code

C0958 code for other Mercedes cars