C2251 Audi 50 OBD Code

OBD/2 C2251 error code description and symptoms.

Intake Manifold Runner Control Malfunction (Stuck Open) The IMRC system is monitored for failure during continuous, key ON engine OFF or key ON engine running self-test. The test fails when the signal on the monitor pin is less than an expected calibrated range at closed throttle. IMRC monitor signal circuit shorted to PWR GND or SIG RTN Damaged IMRC actuator Damaged PCM An IMRCM PID reading approximately near 1 volt at closed throttle may indicate a fault.

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.

C2251 Audi 50 Error Code Repair Process :

When you turn on the ignition, the Service Engine Soon or Check Engine C2251 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 catalyst temperature sensor failure 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 catalyst temperature sensor failure.

Common Causes of Audi 50 C2251 OBD2 Code

A common cause of code C2251 is the failure of Catalyst Temperature Sensor Failure, but there are several other possible causes as well, such as ;

1Camshaft Position Sensor circuit poor electrical connection
Exhaust gas leaks
Damaged camshaft position (CMP) sensor
Incorrect Positive Crankcase Ventilation (PCV) hose connection

C2251 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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C2251 Audi 50 OBD Code

C2251 Audi 50 Error Code Repair Process :

Common Causes of Audi 50 C2251 OBD2 Code

C2251 code for other Audi cars