The P0707: Transmission Range Sensor A Circuit Low Input refers to a low input signal from the transmission range sensor A. This sensor detects the gear position and sends signals to the transmission control module (TCM). A low input signal may be due to a faulty sensor, wiring problems, or connection issues.
P0707 – Quick Overview
| Code | Information |
|---|---|
| Meaning | P0707: Transmission Range Sensor A Circuit Low Input |
| Is it serious? | Yes, as it can cause transmission shifting issues or improper gear readings, which could affect drivability. |
| Possible causes | – Low input signal from transmission range sensor A – Faulty sensor – Wiring or connection issues |
| How to diagnose? | – Check sensor input voltage – Inspect wiring and connectors – Replace sensor if necessary |
P0707 Meaning
The P0707 code indicates that the transmission range sensor A is reporting a low input signal. This sensor monitors the gear position (e.g., Park, Neutral, Drive) and sends this information to the vehicle’s transmission control system. A low input signal can lead to improper gear shifting or the inability to detect the correct gear.
Step-by-step diagnostic guide
| Action | Description | Tools Needed |
|---|---|---|
| Check for Other Codes | Use an OBD-II scanner to check for additional transmission-related codes that may give more information about the issue. | OBD-II Scanner |
| Check Sensor Input Voltage | Use a multimeter to measure the input voltage from transmission range sensor A. Compare the readings to manufacturer specifications to determine if the signal is too low. | Multimeter |
| Inspect Wiring and Connectors | Inspect the wiring and connectors leading to the transmission range sensor A for signs of damage, corrosion, or loose connections that may cause a low signal. | Flashlight, Multimeter |
| Test the Transmission Range Sensor | Test the transmission range sensor A to ensure it is sending accurate signals to the transmission control module (TCM). Replace if faulty. | Multimeter, Diagnostic Tool |
| Replace the Sensor if Necessary | If the sensor is faulty or damaged, replace it with a new one to restore proper function and transmission control. | Replacement Parts, Standard Tools |
| Clear Code and Retest | After repairs, clear the code using an OBD-II scanner and take the vehicle for a test drive to confirm the issue is resolved. | OBD-II Scanner |
| Recheck for Codes | After the test drive, re-scan the vehicle to ensure the P0707 code has not returned. | OBD-II Scanner |
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