What happens when a transmission range sensor fails?
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The Transmission Range Sensor tells the PCM the position of the transmission shifter. The PCM uses this information to control which gears of the transmission to enable or disable. When the TR sensor fails it can cause wrong gear starts, no upshifts, or what feels like a falling-out-of-gear condition.
Where is the transmission range sensor located?
The function of the Transmission Range Sensor is to tell the ECM or TCM the position of the shift lever. The TRS is most commonly located on the outside of the transmission, however some of them are located inside of the transmission on the valve body.
What does a transmission range sensor do?
Transmission range sensors record the transmission speed. This information is required by the control unit to regulate the shifting pressure when shifting gears and to decide which gear needs to be engaged at which point. There are two types of transmission range sensor design: Hall generators and inductive sensors.
How do you troubleshoot a transmission range sensor?
CHECKING THE TRANSMISSION RANGE SENSOR: TROUBLESHOOTING
- Check the sensor.
- Check the encoder wheel.
- Read out fault memory.
- Measure the resistance of the inductive sensor using an ohmmeter.
- Check the supply voltage to the Hall generator using a voltmeter.
How do I fix code P0708?
What Repairs Will Fix P0708?
- Adjust or replace the transmission range sensor / neutral safety switch.
- Repair or replace damaged wiring connectors.
- Repair or replace the shift linkage (common in older vehicles)
Is transmission range sensor and neutral safety switch the same?
The neutral safety switch often has the backup lamp incorporated in its design. The Transmission Range Sensor is part of the transmission computer control system found on late-model vehicles. It can be analog or digital. Both of these are diagnosed with a scan tool.
What is another name for a transmission range sensor?
The transmission range sensor may also be called the neutral safety switch or PRNDL input. Located outside the transmission box or on the valve body, its job is to communicate the current gear selection or shift lever position with the TCM or PCM.
Is the transmission range sensor the same as a neutral safety switch?
How much does it cost to fix a transmission range sensor?
The average cost for transmission position sensor replacement is between $251 and $301. Labor costs are estimated between $138 and $174 while parts are priced between $113 and $128. This range does not include taxes and fees, and does not factor in your specific vehicle or unique location.
Is the transmission range sensor the same as the neutral safety switch?
What causes P0708?
When the code P0708 is set in the Powertrain Computer, it means that the Powertrain Computer or PCM is not seeing a clear, rational change in the data and electrical signals sent from the Transmission Range Sensor, especially after the vehicle is in motion.