P0712 Code: Transmission Fluid Temperature Sensor A Circuit Low
🟠 Moderate severity · drivable
You can drive, but shifting can feel wrong and the transmission may run hotter than it should.
What P0712 means
The transmission fluid temperature sensor is reading a voltage that is too low, which usually means a short to ground or a sensor that failed internally. The computer may act as if the fluid is extremely cold, which changes how the transmission shifts.
Symptoms
- Check engine light is on
- Harsh or delayed shifts
- Transmission may shift at the wrong times
- Transmission may run hotter than normal
Common causes
- most common: Faulty transmission fluid temperature sensor
- common: Wiring shorted to ground
- common: Corroded or loose connector
- less common: Low or contaminated transmission fluid
How to fix it
| Fix | DIY? | Typical cost |
|---|---|---|
| Inspect the sensor wiring and connector for shorts | Yes | $20–60 |
| Replace the transmission fluid temperature sensor | Mechanic | $150–400 |
| Repair shorted wiring | Mechanic | $80–250 |
Frequently asked questions
Can I drive with a P0712 code?
Yes, but the transmission may shift harshly or at the wrong times. Have it diagnosed soon so the transmission doesn't run hotter than normal.
What does a low circuit on the temperature sensor mean?
It means the sensor signal voltage is too low, which usually points to a short to ground in the wiring or a sensor that has failed.
How much does it cost to fix a P0712?
Replacing the sensor typically costs $150–$400 including parts and labor. A wiring repair is usually less.
Related codes
P0711
P0711 Code: Transmission Fluid Temperature Sensor A Circuit Range/Performance
P0713P0713 Code: Transmission Fluid Temperature Sensor A Circuit High
P0714P0714 Code: Transmission Fluid Temperature Sensor A Circuit Intermittent
Related guide: The 10 Most Common Check Engine Codes →
Updated 2026-08. This page is informational and not a substitute for professional diagnosis.