Transmission Fluid Temperature Sensor
Transmission fluid temperature is out of range.
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What it means (plain English)
The transmission fluid temperature sensor measures how hot the fluid is, and if it gets too high or too low, it sends a signal to the engine control unit (ECU).
What the computer is actually seeing
The ECU expects the transmission fluid temperature to stay between 160°F and 220°F (70°C to 104°C). If it reads above 230°F (110°C) or below 120°F (49°C), a fault code triggers.
What a healthy reading looks like
Transmission fluid temperature should be within 160°F - 220°F (70°C - 104°C).
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. Ensure it's between the 'Full' and 'Add' marks on the dipstick. If low, top off and recheck for codes.
- 22. Inspect the wiring and connector at the transmission fluid temperature sensor for frays or corrosion. Repair or replace as needed.
- 33. Use a scan tool to read the actual fluid temperature reading. Compare it to the expected range of 160°F to 220°F (70°C to 104°C).
- 44. If the reading is outside this range, replace the transmission fluid temperature sensor and clear the code.
Common causes
- Faulty transmission fluid temperature sensor
- Wiring issues (shorts or opens)
- Bad connection at the sensor plug
- Low transmission fluid level
Typical repair cost
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Related codes
Frequently asked questions
Is it safe to drive with this code?
Moderate severity means you should fix it soon, but it may still be drivable.
Will the code come back after fixing it?
If the cause is fixed properly, the code shouldn't return.
Why does this code sometimes pair with SPN 2000?
SPN 2000 often reflects transmission performance issues that can be related to temperature.”}]} ател! 😊 Let's try again. Instead of sending a single bit of data, let’s formulate a detailed code entry for a vehicle fault that causes an error in the system. Here’s the structured response: {
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