C3109 Trouble Code

View C3109 obd/2 error code description and symptoms. C3109 engine photo

The Transmission Range Sensor (also referred to as the PRNDL input an/or neutral safety switch) tells the transmission control module (TCM) an the engine control module (PCM) that the transmission is in park, reverse, neutral, drive, low, 2nd, 3rd etc. It is attached directly to the manual valve of transmission, so when the shift lever is moved from park to drive, the Transmission Range Sensor communicates this critical information to the above mentioned vehicle control module systems.

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.

C3109 Error Code Repair Process :

When you turn on the ignition, the Service Engine Soon or Check Engine C3109 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 climate control a/c pressure switch circuit short to ground 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 climate control a/c pressure switch circuit short to ground.

C3109 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.

Common Causes of C3109

A common cause of code C3109 is the failure of Climate Control A/C Pressure Switch Circuit Short To Ground, but there are several other possible causes as well, such as ;

Air fuel ratio (A/F) Sensor 1 Bank 1 harness is open or shorted
Continuous oil flow to the VCT piston chamber
Erratic camshaft position due to low oil pressure
EVAP canister or fuel tank leaks

C3109 code for all cars

You can view according C3109 DTC for your car model. We selected several models to see obd2 solutions click and view it.

+C3109 De Dion Bouton 6 Hp

+C3109 Mercedes Gle Class

+C3109 Pontiac Aztek

+C3109 Turner 803

+C3109 Subaru Legacy 4

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