C20A4 Fiat Tipo OBD Code

OBD/2 C20A4 error code description and symptoms.

Output Shaft Speed sensor circuit intermittent failure The output shaft speed sensor signal to the PCM is irregular or interrupted.
Harness connector not properly seated Harness intermittently shorted, or open Harness connector damaged OSS sensor damaged, or not installed properly Verify harness and connector integrity Verify OSS sensor proper installation.

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.

C20A4 Fiat Tipo Error Code Repair Process :

When you turn on the ignition, the Service Engine Soon or Check Engine C20A4 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 manifold absolute temperature circuit high input 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 manifold absolute temperature circuit high input.

Common Causes of Fiat Tipo C20A4 OBD2 Code

A common cause of code C20A4 is the failure of Manifold Absolute Temperature Circuit High Input, but there are several other possible causes as well, such as ;

Camshaft Position Sensor harness is open or shorted
Continuous oil flow to the VCT piston chamber
Dirty Oil
Insufficient cylinders compression

C20A4 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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C20A4 Fiat Tipo OBD Code

C20A4 Fiat Tipo Error Code Repair Process :

Common Causes of Fiat Tipo C20A4 OBD2 Code

C20A4 code for other Fiat cars