P0707 code meaning
Transmission Range Sensor A Circuit Low
Powertrain system Generic code P07xx codes Check engine light
What P0707 means
The transmission range sensor (selector or multifunction switch, PRNDL) reports the selected range; it may be a multi-contact switch with a bit pattern per position, an analog sensor with two opposing voltages adding up to 5 V, or a contactless PWM sensor. Its second channel has its own codes (P2801–P2805). P0707 means the sensor A signal is too low – usually a short to ground or lost supply. GM's T87A transmission module flags a PWM duty cycle below 8.8 % for 0.5 s within 1.5 s, with the lamp in the first trip; Ford flags a duty cycle below 10 %, an analog sensor below 0.2 V for 5 s or a dual-analog channel below 0.127 V for 200 ms; Saab's 9-5 (9650) below 0.127 V for 100 ms twice. 'Low' refers to the signal, not to a gear.
P0707 at a glance
- Check engine lightYes, usually on
- Emissions testCan fail
- Limp modePossible
- Repair difficultyMedium
- Typical labor0.5 to 3 hours
- Clears after repairWhen cleared with a scanner
Symptoms of P0707
- Check engine and/or transmission warning lamp
- Transmission limp mode, fixed gear, harsh shifts
- Starting problems in P/N or start interlock
- Wrong gear indication, reversing light not working
Common causes of P0707
- Most likelySignal wire shorted to ground (chafing at the transmission case)
- PossibleSensor faulty internally
- PossibleSensor supply missing (5 V reference, fuse)
- Less likelyConnector corroded or oil in the connector
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Transmission range sensorSensor wiringTransmission control module
What each part of P0707 means
| P | Powertrain system: engine, fuel system, ignition, emissions and transmission. |
| 0 | Generic code: it means the same on every make (SAE standard). |
| 7 | Area: transmission. |
| 07 | The exact fault in that area. |
What to do next
- Note P0707 and any other codes stored with it: several codes together often point to one cause.
- Check for loose connectors and damaged wiring around the parts the code names.
- Check open recalls for your car: some faults are fixed for free by the dealer. Enter your VIN.
- Clear the code only after the repair. If it comes back, the fault is still there.
Buying a used car? Scan it for stored codes before you pay. A recently cleared memory can hide a problem.
Questions about P0707
What does P0707 mean?
P0707 means "Transmission Range Sensor A Circuit Low". The transmission range sensor (selector or multifunction switch, PRNDL) reports the selected range; it may be a multi-contact switch with a bit pattern per position, an analog sensor with two opposing voltages adding up to 5 V, or a contactless PWM sensor. It is a generic code, so it means the same on every make.
Is it safe to drive with P0707?
Drive gently and only to a workshop. With P0707 the car can go into limp mode (reduced power) to protect itself.
Will P0707 fail an emissions test?
Yes, it can. P0707 is emissions-related, so most inspection programs fail a car while it is stored or while the check engine light is on.
How hard is P0707 to fix?
Difficulty: medium. A typical repair takes 0.5 to 3 hours of work. This is a job for a workshop.
Will P0707 clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.