P3798 Alfa Romeo 22 OBD Code

OBD/2 P3798 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.

P3798 Alfa Romeo 22 Error Code Repair Process :

If your air suspension lr air spring/shock solenoid output circuit short to ground 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 P3798 and engine control unit are in charge of monitoring a bunch of different air suspension lr air spring/shock solenoid output circuit short to ground, and if they get a reading that's a little out of whack, up pops the check engine light.

Common Causes of Alfa Romeo 22 P3798 OBD2 Code

A common cause of code P3798 is the failure of Air Suspension LR Air Spring/Shock Solenoid Output Circuit Short To Ground, but there are several other possible causes as well, such as ;

Camshaft Position Sensor harness is open or shorted
Air fuel ratio (A/F) Sensor 1 Bank 1 circuit poor electrical connection
Engine Control Module (ECM)
Oil flow restriction in the oil passages or the variable camshaft timing (VCT) valve body

P3798 is a kind of Powertrain Trouble Code

Powertrain of a modern automobile, comprising engine (with exhaust system), transmission, drive shaft, suspension and the wheels. In a motor vehicle, the term powertrain or powerplant describes the main components that generate power and deliver it to the road surface, water, or air.

Engine OBD 2 Codes website is a freeware resource center for engine trouble codes.

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P3798 Alfa Romeo 22 OBD Code

P3798 Alfa Romeo 22 Error Code Repair Process :

Common Causes of Alfa Romeo 22 P3798 OBD2 Code

P3798 code for other Alfa cars