P084C

Transmission Fluid Pressure Sensor/Switch H Circuit Low

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$28–89 (est.)

Symptoms

The car goes into emergency gearbox mode
Difficulty shifting gears
Increased fuel consumption
Check Engine light comes on
Reduced vehicle dynamics

Causes

Transmission fluid pressure sensor malfunction
Open or short circuit in the sensor circuit
Poor contact in the sensor connector
Problems with power or grounding of the circuit
Transmission control module (TCM) malfunction

How to Fix

Check the level and condition of the transmission fluid
Inspect the sensor wiring and connectors for damage
Check the power supply and grounding of the sensor circuit
Test or replace pressure sensor
If necessary, diagnose the TCM

Related codes

P084D P084B P084A