C2801 Mercedes Clk OBD Code

OBD/2 C2801 error code description and symptoms.

HO2S Sensor Circuit Malfunction (HO2S-11) During testing the HO2S Heaters are checked for opens/shorts and excessive current draw.
The test fails when current draw exceeds a calibrated limit and/or an open or short is detected. Short to VPWR in harness or HO2S. Water in harness connector. Open VPWR circuit. Open GND circuit. Low battery voltage. Corrosion or poor mating terminals and wiring Damaged HO2S heater. Damaged PCM.

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.

C2801 Mercedes Clk Error Code Repair Process :

The rule of C2801 code when it comes to emissions-related vehicle repair is that any modification that changes the vehicle from a certified configuration to a non-certified configuration is considered tampering: this applies to both vehicle owners and repair facilities and is, therefore, a Federal offense. Replacing a catalyst with a straight pipe is one traditional example of lamp turn signal right circuit short to battery. Likewise, overriding the OBD C2801 error in system through the use of high-tech defeat devices or non-certified computer chips, for example, would also be considered tampering. The OBD system may, however, be repaired back to its original certified configuration with certified performance chips or appropriate aftermarket parts.

Common Causes of Mercedes Clk C2801 OBD2 Code

A common cause of code C2801 is the failure of Lamp Turn Signal Right Circuit Short To Battery, but there are several other possible causes as well, such as ;

Exhaust tube
Faulty oil control valve (OCV)
Camshaft advance mechanism binding (VCT unit)
Faulty front heated oxygen sensor

C2801 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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C2801 Mercedes Clk OBD Code

C2801 Mercedes Clk Error Code Repair Process :

Common Causes of Mercedes Clk C2801 OBD2 Code

C2801 code for other Mercedes cars