C0191 Mercedes-benz Gl Class OBD Code

OBD/2 C0191 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.

On some transmissions, such as automated manual transmissions or automatic transmissions with manual mode, the GSP switch lets the TCM know whether or not the driver has selected automatic or manual function. On manual transmissions, the GSP switch informs the TCM which gear the driver is selecting, and may function as a neutral safety switch, depending on system design. The TCM also uses the gate select position switch to monitor transmission operation. For example, if the driver selects manual mode and selects 3rd gear on an automatic transmission, the TCM may monitor speed sensors to detect clutch and brake slippage.

C0191 Mercedes-benz Gl Class Error Code Repair Process :

When you turn on the ignition, the Service Engine Soon or Check Engine C0191 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 pats is disabled (check link between pats and transponder) 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 pats is disabled (check link between pats and transponder).

Common Causes of Mercedes-benz Gl Class C0191 OBD2 Code

A common cause of code C0191 is the failure of PATS Is Disabled (Check Link Between PATS And Transponder), but there are several other possible causes as well, such as ;

Dirty Oil
Failures of clutch motion/travel sensors.
Faulty Intake Valve Timing Control Solenoid Valve
Ignition coils circuit poor electrical connection

C0191 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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C0191 Mercedes-benz Gl Class OBD Code

C0191 Mercedes-benz Gl Class Error Code Repair Process :

Common Causes of Mercedes-benz Gl Class C0191 OBD2 Code

C0191 code for other Mercedes-benz cars