Transmission Fluid Temperature Sensor Out of Range
Transmission fluid temperature is outside the expected range.
Heads up: this code wasn't in our hand-written library yet, so DiagCoach AI built this page on the fly. Double-check critical specs against service info before condemning parts.
What it means (plain English)
The computer monitors the temperature of the transmission fluid. If it's too high or too low compared to normal, it triggers this code.
What the computer is actually seeing
The computer sees temperature readings from the transmission fluid sensor that are outside the set parameters, usually below 0°F (-18°C) or above 300°F (149°C).
What a healthy reading looks like
Normal transmission fluid temperature is typically between 175°F to 225°F (79°C to 107°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.
- 1Check transmission fluid level; it should be within the specified range. Refill if low.
- 2Inspect wiring and connectors to the transmission fluid temperature sensor; look for cuts, corrosion, or loose connections.
- 3Use a scan tool to check the actual temperature reading. It should be between 175°F to 225°F. If it reads extreme values, the sensor may be faulty.
- 4If the sensor checks out, monitor the transmission fluid for overheating issues or low performance; this may point to internal transmission problems.
Common causes
- Faulty transmission fluid temperature sensor
- Wiring issues (shorts, opens, bad connections)
- Low transmission fluid level
- Faulty transmission control unit (TCU)
Typical repair cost
$$
Related codes
Frequently asked questions
Is it safe to drive with this code?
It's not recommended to drive for long periods; overheating can cause severe transmission damage.
Will the code return after clearing it?
If the underlying issue is not fixed, the code is likely to return.
Why does this code show up with other codes?
Transmissions are complex systems; other faults can impact fluid temperature and cause multiple codes to appear.
Working a real vehicle right now?
Let DiagCoach walk you through it live with your specific symptoms, vehicle, and what you've already checked.
Start guided diagnostic →