P0707 — Transmission Range Sensor Circuit Low Input
Drivable short-term, but fix now to avoid damage.
What P0707 means
This code indicates the transmission range sensor circuit is sending a signal voltage that's too low, often caused by a short to ground or an open in the wiring. Since this sensor tells the computer your shifter position, a low signal can lead to wrong-gear engagement or starting problems. Typical repairs include fixing shorted or open wiring, cleaning connectors, or replacing the range sensor.
Common symptoms
- Check engine light is on
- Incorrect gear indicator reading
- Harsh or wrong-gear shifting
- Engine may not start in Park or Neutral
- Transmission enters limp mode
Common causes
- Short to ground in the sensor wiring
- Open circuit or broken wire
- Corroded or loose connector
- Faulty transmission range sensor
- Failing transmission control module
Typical repair cost
$150 – $500
Varies by vehicle and root cause.
Frequently asked questions
Can I keep driving with a P0707 code?
It's best to limit driving. A low sensor signal can cause the transmission to shift incorrectly or the car not to start, so have it diagnosed before relying on the vehicle.
How much does it cost to fix a P0707 code?
If it's a wiring or connector fix, you may spend $100 to $250. A full range sensor replacement with diagnosis can run $300 to $500.
Is a P0707 code serious?
Yes, it can be. It affects gear selection and starting, both of which are safety-related, so prompt repair is recommended.
What does low input mean for P0707?
Low input means the sensor's signal voltage dropped below the expected level, usually due to a short to ground or a broken wire. The computer flags this because it can't trust the gear position reading.