The input turbine speed sensor detects rotation of the input shaft of the input shaft speed sensor transmission. The computer uses that information, along with the output shaft speed sensor to determine if the transmission is operating according to plan. If the computer detects a difference between the input shaft speed , and the expected output shaft speed, it will adjust transmission pump pressure to prevent clutch disc slip. If adding pressure doesn't solve the problem, it will set a trouble code.
On some transmissions, such as automated manual transmissions or automatic transmissions with manual mode, the GSP switch lets the TCM know whether or not the driver has selected automatic or manual function. On manual transmissions, the GSP switch informs the TCM which gear the driver is selecting, and may function as a neutral safety switch, depending on system design. The TCM also uses the gate select position switch to monitor transmission operation. For example, if the driver selects manual mode and selects 3rd gear on an automatic transmission, the TCM may monitor speed sensors to detect clutch and brake slippage.
Difficulty Level (Expert)
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Repair Time (60 Min.)
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| Cost Prediction : $ 75-90 |
When you turn on the ignition, the Service Engine Soon or Check Engine C20D4 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 bank 2 fuel control shifted rich 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 bank 2 fuel control shifted rich.
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C20D4 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 C20D4 DTC for your car model. We selected several models to see obd2 solutions click and view it.
| +C20D4 Subaru Forester | +C20D4 Abarth Stola | +C20D4 Mercury Mountaineer Ii | +C20D4 Hyundai Atos | +C20D4 Ford Vedette |
Engine OBD 2 Codes website is a freeware resource center for engine trouble codes.
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