Transmission Fluid Pressure Sensor Range/Performance Problem
Transmission fluid pressure sensor signal is out of 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)
Your car's computer noticed that the transmission fluid pressure sensor isn't sending back normal pressure readings, which can affect how the transmission shifts and operates.
What the computer is actually seeing
The Engine Control Module (ECM) monitors the transmission fluid pressure sensor signal, expecting it to be within a specific range (usually around 30-100 PSI when running). A reading outside this range triggers the code.
What a healthy reading looks like
Transmission pressure should be between 30-100 PSI at operating temperature; below 15 PSI or above 120 PSI can set 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.
- 1Check the transmission fluid level; it should be at the correct level and clean. Add or replace if necessary.
- 2Inspect the wiring and connectors to the transmission fluid pressure sensor for damage or corrosion. Repair as needed.
- 3Test the voltage at the transmission fluid pressure sensor connector; it should generally be between 0.5-4.5 volts when the engine is running.
- 4Use a scan tool to check the actual pressure readings; compare these with the expected values (30-100 PSI). If readings are erratic, suspect a faulty sensor.
- 5If the sensor appears faulty, replace it and retest the system. If issues persist, investigate further internal transmission problems.
Common causes
- Faulty transmission fluid pressure sensor
- Wiring issues or bad connections to the sensor
- Low transmission fluid level or contaminated fluid
- Internal transmission issues like pump failure
Typical repair cost
$$
Related codes
Frequently asked questions
Can I still drive my vehicle with this code?
It's drivable, but shifts may be harsh or erratic. Fix soon to avoid further damage.
Will this code come back if I clear it?
It can return if the underlying issue isn't fixed.
Does this code relate to transmission overheating?
Not directly, but low pressure can lead to overheating and damage.
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 →