P0707 Code: Transmission Range Sensor A Circuit Low
🟠 Moderate severity · drivable
You can drive carefully, but the transmission may not shift properly or the car may not start in some gear positions.
What P0707 means
The transmission range sensor tells the computer which gear you've selected with the shifter. A low voltage reading means the signal is near zero, which usually points to a short to ground or a bad sensor. Without a reliable gear signal, the computer may limit shifting or starting.
Symptoms
- Check engine light is on
- Gear indicator on the dash may show the wrong gear
- Car may not start in Park or Neutral
- Harsh, delayed, or no shifting
Common causes
- most common: Faulty transmission range sensor
- common: Wiring shorted to ground
- common: Corroded or loose connector at the sensor
- less common: Misadjusted shift linkage
How to fix it
| Fix | DIY? | Typical cost |
|---|---|---|
| Inspect the sensor connector and wiring for shorts or damage | Yes | $20–60 |
| Adjust the shift linkage | Yes | $50–100 |
| Replace the transmission range sensor | Mechanic | $100–350 |
Frequently asked questions
Can I drive with a P0707 code?
Usually yes, but take it easy. The transmission may shift harshly or refuse to shift, and some cars won't start in certain gear positions until it's fixed.
What does the transmission range sensor do?
It tells the transmission computer which position the shifter is in — Park, Reverse, Neutral, or Drive — so the computer can control shifting and starting correctly.
How much does it cost to fix a P0707?
A range sensor replacement usually runs $100–$350 including parts and labor. Wiring repairs are typically less.
Related codes
P0708
P0708 Code: Transmission Range Sensor A Circuit High
P0709P0709 Code: Transmission Range Sensor A Circuit Intermittent
P0700P0700 Code: Transmission Control System Malfunction
Updated 2026-08. This page is informational and not a substitute for professional diagnosis.