prjctx.net
P0840Powertrain (P)generic

Transmission Fluid Pressure Sensor/Switch "A" Circuit

The transmission fluid pressure sensor A is not communicating properly with the transmission control computer. Without this sensor's input, the transmission cannot adjust fluid pressure for proper gear shifting. The vehicle may not shift correctly, run in limp mode, or suffer transmission damage.

No detailed repair guide linked yet. Check back soon or search for related issues.