Transmission Fluid Temperature Sensor Out of Range
Transmission fluid temperature is outside the normal range.
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What it means (plain English)
The sensor that measures the temperature of the transmission fluid is reading too high or too low, indicating a potential problem with the transmission or sensor itself.
What the computer is actually seeing
The engine control module (ECM) expects the transmission fluid temperature to be between 160°F and 220°F (70°C to 104°C) under normal operating conditions. If the reading falls outside of this range, it triggers this fault code.
What a healthy reading looks like
Normal range for transmission fluid temperature is 160°F to 220°F (70°C to 104°C) when the vehicle is operating; below 160°F or above 220°F will trigger the code.
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. Top off if low, then retest.
- 22. Inspect wiring and connector at the transmission fluid temperature sensor for damage or corrosion. Repair as necessary and retest.
- 33. Measure the resistance of the transmission fluid temperature sensor. It should vary appropriately with temperature (check manufacturer specs). If not, replace the sensor.
- 44. If the sensor is good, use a scan tool to monitor live data. Look for temperature readings that are consistent with operating conditions. If readings are erratic or out of range, suspect a faulty TCM.
Common causes
- Faulty transmission fluid temperature sensor
- Wiring issues or connector problems
- Low transmission fluid level
- Contamination of transmission fluid
- Faulty transmission control module (TCM)
Typical repair cost
$$
Related codes
Frequently asked questions
Is it safe to drive with this code?
With a moderate severity, it's best to fix this soon as it could lead to transmission overheating or damage.
Will this code come back after clearing?
It may return if the underlying issue, like a faulty sensor or wiring, isn't fixed.
Why does this code pair with SPN 3293?
SPN 3293 relates to the transmission fluid temperature being too low, indicating sensor issues or environmental factors affecting readings.
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