C0550 Mercedes S 320 OBD Code

OBD/2 C0550 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) C0550 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.

C0550 Mercedes S 320 Error Code Repair Process :

If your seat horizontal motor memory position out of range check engine light is illuminated, it's best to take it in for diagnostic testing, which can feel like a hassle. Because while the lights vary in appearance from vehicle to vehicle, all have the same basic meaning: There's a problem with the car's emissions system. The on-board diagnostics system C0550 and engine control unit are in charge of monitoring a bunch of different seat horizontal motor memory position out of range, and if they get a reading that's a little out of whack, up pops the check engine light.

Common Causes of Mercedes S 320 C0550 OBD2 Code

A common cause of code C0550 is the failure of Seat Horizontal Motor Memory Position Out of Range, but there are several other possible causes as well, such as ;

Camshaft advance mechanism binding (VCT unit)
Clogged or faulty fuel injector (s)
Fuel injector leaks
Oil flow restriction in the oil passages or the VCT valve body

C0550 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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C0550 Mercedes S 320 OBD Code

C0550 Mercedes S 320 Error Code Repair Process :

Common Causes of Mercedes S 320 C0550 OBD2 Code

C0550 code for other Mercedes cars