Transmission Fluid Pressure Sensor 'A' Circuit High
The transmission fluid pressure sensor input is too high for the given conditions.
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What it means (plain English)
The transmission fluid pressure sensor is reporting a pressure level that exceeds the expected range, which can affect shifting and lead to transmission issues.
What the computer is actually seeing
The computer checks the fluid pressure in the transmission through a sensor. If pressure readings go above 5 volts or in the case of a circuit problem, it triggers the code.
What a healthy reading looks like
Normal fluid pressure should range between 0.5 to 4.5 volts depending on pressure, with idle pressures usually below 3 volts.
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 and condition. Is the fluid dirty or low? If yes, service the transmission fluid first.
- 22. Inspect the wiring and connectors for the transmission fluid pressure sensor. Are there any frayed wires or bad connections? If yes, repair as needed.
- 33. Use a multimeter to check the voltage at the pressure sensor connector with the key on and the engine off. Is it higher than 5 volts? If yes, check for shorts in the wiring.
- 44. Test the transmission fluid pressure sensor with a scan tool. Does it show voltage or pressure values within the expected range? If no, replace the sensor.
- 55. Clear the code and take the vehicle for a test drive. Does the code return? If yes, consider inspecting the TCM next.
Common causes
- Faulty transmission fluid pressure sensor
- Wiring issues or broken connectors
- Dirty or low transmission fluid
- Faulty transmission control module (TCM)
Typical repair cost
$$
Related codes
Frequently asked questions
Is it safe to drive my vehicle with this code?
It's advisable to drive with caution. The transmission may behave erratically or shift poorly.
Will this problem come back after I fix it?
If all underlying issues are resolved, it should not return, but keep an eye on it.
Why does this code sometimes pair with P0700?
P0700 is a general transmission fault code, indicating that there's a problem with the transmission system; P1760 indicates a specific sensor issue.
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