P0873

Transmission Fluid Pressure Sensor/Switch C Circuit High

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$17–56 (est.)

Symptoms

Incorrect gear shifting
Delays when shifting gears
Transmission transition to emergency mode
Check Engine light comes on
Reduced transmission efficiency

Causes

Transmission fluid pressure sensor fault C
Open or short circuit in the sensor circuit
Poor contact in the sensor connector
Transmission control module (TCM) malfunction
Contaminated or low transmission fluid level

How to Fix

Check the level and condition of the transmission fluid
Conduct a visual inspection of the sensor circuit for damage.
Check the resistance and voltage of the pressure sensor
Check connectors and connections for corrosion or damage
If necessary, replace the transmission fluid pressure sensor

Related codes

P0871 P0872 P0874