P28F4

Engine Disconnect Clutch Pressure Sensor Circuit High

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$28–89 (est.)

Symptoms

Incorrect gear shifting
Clutch slipping
Power Loss
Enabling emergency transmission mode
Malfunction indicator light comes on

Causes

Pressure sensor circuit open
Short circuit to positive in the wiring
Clutch pressure sensor malfunction
Poor contact in connectors
Transmission control unit malfunction

How to Fix

Check the integrity of the sensor wiring and connectors
Measure the resistance and voltage of the pressure sensor
Check for short circuit in the circuit
Replace faulty clutch pressure sensor
Test and, if necessary, replace the transmission control unit

Related codes

P28F0 P28F1 P28F2 P28F3