Transmission Fluid Temperature Sensor Out of Range
The transmission fluid temperature sensor reading is outside of the expected range.
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What it means (plain English)
The transmission has a sensor that monitors the fluid temperature. If it's too high or too low, it sends a signal to the computer that's different from what we'd expect, like above 250°F or below 0°F.
What the computer is actually seeing
The ECM sees a transmission fluid temperature that is significantly higher than the normal operating range (usually around 175°F to 220°F) or below the freezing point (32°F).
What a healthy reading looks like
Transmission fluid temperature should be between 175°F and 220°F during normal operation.
Guided diagnostic — the DiagCoach way
Don't just throw parts at it. Walk through these in order — each step tells you whether to keep going or stop and fix what you found.
- 11. Check the transmission fluid level. Add if low and recheck for the code after topping off.
- 22. Inspect the wiring and connectors to the transmission fluid temperature sensor for damage or corrosion.
- 33. Using a scan tool, monitor the transmission fluid temperature. Verify it stays within expected values (175°F-220°F).
- 44. If the values are abnormal, replace the transmission fluid temperature sensor. Clear the code and test drive the vehicle to see if it comes back.
Common causes
- Faulty transmission fluid temperature sensor
- Wiring issues or damaged connectors to the sensor
- Low transmission fluid level
- Faulty ECM (rare)
Typical repair cost
$$
Related codes
Frequently asked questions
Is it safe to drive with this code?
It's generally okay to drive short distances until you can repair it, but monitor for any transmission issues like slipping or overheating.
Will this code come back after repairs?
If the problem is fixed and all systems are functioning correctly, the code should not return.
Why do I see this code along with other transmission codes?
Transmission issues often interact, and one fault can lead to others being triggered.
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