Transmission Fluid Temperature Sensor Out of Range
The transmission fluid temperature sensor is reporting abnormal temperatures.
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What it means (plain English)
The transmission fluid temperature sensor is telling the computer that the fluid temperature is either too high or too low, which could affect the transmission's operation and cause premature wear.
What the computer is actually seeing
The PCM expects stable temperature readings from the transmission fluid temperature sensor. If the temperature goes outside a predefined range (for example, below 20°C or above 120°C) for more than a few seconds, the fault code triggers.
What a healthy reading looks like
Normal transmission fluid temperature typically ranges between 70°C to 100°C (158°F to 212°F). Too high (>120°C) or too low (<20°C) triggers a fault.
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.
- 1Check the transmission fluid level; it should be within the normal range.
- 2Inspect the wiring and connectors for the transmission fluid temperature sensor for any damage or corrosion.
- 3Use a scan tool to check the actual temperature value reported by the sensor; it should be between 70°C and 100°C.
- 4If the sensor reading is out of the expected range, replace the transmission fluid temperature sensor and retest.
Common causes
- Faulty transmission fluid temperature sensor
- Wiring issues or bad connections to the sensor
- Low transmission fluid levels
- Contaminated or burnt transmission fluid
Typical repair cost
$$
Related codes
Frequently asked questions
Can I still drive with this code?
Yes, but it's advised to fix it soon as it can affect transmission performance.
Will this code come back if I clear it?
It might return if the underlying issue isn't fixed.
Why do I see other codes with this one?
Other codes often indicate related issues like wiring problems or malfunctioning components.
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