C2049 Trouble Code

View C2049 obd/2 error code description and symptoms. C2049 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.

C2049 Error Code Repair Process :

If your engine speed input circuit intermittent 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 C2049 and engine control unit are in charge of monitoring a bunch of different engine speed input circuit intermittent, and if they get a reading that's a little out of whack, up pops the check engine light.

C2049 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 C2049

A common cause of code C2049 is the failure of Engine Speed Input Circuit Intermittent, 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
Exhaust gas leaks
Faulty Fuel injector
Ignition misfiring

C2049 code for all cars

You can view according C2049 DTC for your car model. We selected several models to see obd2 solutions click and view it.

+C2049 British Salmson 12

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

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