How long does the transmission speed sensor last?
The transmission speed sensor measures the number of revolutions of the transmission shaft. While the engine is running but not moving, the transmission input shaft is not moving either. When the input shaft moves...
The transmission speed sensor measures the number of revolutions of the transmission shaft. While the engine is running but not moving, the transmission input shaft is not moving either. When the input shaft moves, the transmission speed sensor reads this movement and sends this information to the control module. Also, while the input shaft is moving, the vehicle is moving, so the input shaft rotates at the same RPM as the engine. The vehicle speed depends on the input pulse and the current gear ratio, and the input shaft speed is related to the vehicle speed.
Over time, the baud rate sensor can fail due to wiring issues, or simply fail due to being constantly used every time you drive your vehicle. If the sensor is magnetic, it may be damaged by iron sticking to the tip of the sensor, resulting in inaccurate readings. In this case, the sensor does not need to be replaced, as it can be cleaned. However, this should only be done by a mechanic, because the electrical part of the sensor may be damaged.
Typically the transmission speed sensor is diagnosed with a scan tool that is read by the mechanic. If you suspect that your transmission speed sensor needs to be replaced because your vehicle is running at high or low RPMs, have a professional mechanic inspect your vehicle and read any error codes that appear. Reading error codes is the most accurate way to determine if your transmission speed sensor is at fault.
Because the baud rate sensor can fail and fail over time, it is important to recognize the symptoms before it fails completely so that it can be replaced.
Signs that the transmission sensor needs to be replaced include:
Unstable rpm readings
The needle doesn't move at all on the rev gauge.
Hesitation when shifting gears, both in manual and automatic mode
The sensor is an important part of your transmission and the smooth running of your vehicle, so this repair should not be put off. Have a certified mechanic replace a faulty transmission speed sensor to rule out further problems with your vehicle.
