C3721 Mercedes E 200 OBD Code

OBD/2 C3721 error code description and symptoms.

The Throttle Position sensor signals the Engine Control Module as to the current position of the engine throttle valve.
The current throttle valve opening is based on the driver's input from the gas pedal. The ECM uses the information from this sensor to help calculate fuel delivery and spark timing.

Some systems require that the actuator has an adequate supply of brake fluid. Low brake fluid levels can mimic the symptoms of code C3721, so consult the manual to locate the brake fluid reservoir. Bear in mind that a low fluid level can set code C3721 on some applications, so make sure that on fluid operated systems the fluid level is up to the mark before starting an electrical diagnosis.

C3721 Mercedes E 200 Error Code Repair Process :

The rule of C3721 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 speed wheel sensor rear center coherency fault. Likewise, overriding the OBD C3721 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 E 200 C3721 OBD2 Code

A common cause of code C3721 is the failure of Speed Wheel Sensor Rear Center Coherency Fault, but there are several other possible causes as well, such as ;

Damaged ECM
Faulty ignition coil (s)
Continuous oil flow to the VCT piston chamber
Oil flow restriction in the oil passages or the variable camshaft timing (VCT) valve body

C3721 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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C3721 Mercedes E 200 OBD Code

C3721 Mercedes E 200 Error Code Repair Process :

Common Causes of Mercedes E 200 C3721 OBD2 Code

C3721 code for other Mercedes cars