P0711 — Transmission Fluid Temperature Sensor Circuit Malfunction
Drive with caution — fix soon.
What P0711 means
This code means the transmission fluid temperature sensor circuit isn't working correctly, so the computer can't reliably read how hot the transmission fluid is. Without an accurate temperature reading, the transmission may default to a protective shift strategy and you lose your overheating safeguard. It's typically caused by a bad temperature sensor, wiring or connector issues, and is often a straightforward fix once the fault is found.
Common symptoms
- Check engine light is on
- Transmission shifts harshly or differently than usual
- Reduced fuel economy
- Transmission may enter limp or failsafe mode
- No overheating warning even when fluid is hot
Common causes
- Faulty transmission fluid temperature sensor
- Damaged or corroded wiring and connectors
- Open or short circuit in the sensor wiring
- Low or contaminated transmission fluid
- Internal transmission control module fault
Typical repair cost
$150 – $400
Varies by vehicle and root cause.
Frequently asked questions
Can I keep driving with a P0711 code?
Usually yes for the short term, but don't make it a habit. The car loses its accurate transmission temperature reading, so it can't warn you of overheating, which is the biggest risk to your transmission. Get it looked at soon to stay safe.
How much does it cost to fix a P0711 code?
Repairs typically range from $150 to $400. Replacing the temperature sensor or repairing wiring is usually affordable, though some vehicles bury the sensor inside the transmission, which raises labor. A flush of contaminated fluid may add a bit more.
Is a P0711 code serious?
It's moderate. The fault itself won't strand you right away, but losing the overheating warning means the transmission could get too hot without you knowing. Fixing it promptly protects against expensive transmission damage.
What does the transmission fluid temperature sensor actually do?
It measures how hot your transmission fluid is so the computer can adjust shift timing and torque converter lockup, and warn you if things overheat. When its signal is faulty, the transmission often shifts more conservatively to protect itself.