The Throttle Position sensor signals the Engine Control Module as to the current position of the engine throttle valve.
The current throttle valve opening is based on the driver's input from the gas pedal. The ECM uses the information from this sensor to help calculate fuel delivery and spark timing.
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.
Difficulty Level (Easy)
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Repair Time (20 Min.)
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| Cost Prediction : $ 40-75 |
If your park/neutral switch 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 C3001 and engine control unit are in charge of monitoring a bunch of different park/neutral switch circuit short to ground, and if they get a reading that's a little out of whack, up pops the check engine light.
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C3001 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. |
You can view according C3001 DTC for your car model. We selected several models to see obd2 solutions click and view it.
| +C3001 Chevrolet Prizm | +C3001 Jaguar Xjr | +C3001 De Tomaso Deauville | +C3001 Bmw Z3 | +C3001 Hyundai Tiburon |
Engine OBD 2 Codes website is a freeware resource center for engine trouble codes.
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