P28F4
Engine Disconnect Clutch Pressure Sensor Circuit High
P28F4 is an OBD-II diagnostic trouble code meaning: Engine Disconnect Clutch Pressure Sensor Circuit High. Common causes: pressure sensor circuit open, short circuit to positive in the wiring. Estimated repair cost: $28–89.
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
Error P28F4 by Vehicle Brand
FAQ
What does the P28F4 code mean?
P28F4 is an OBD-II diagnostic trouble code that indicates: Engine Disconnect Clutch Pressure Sensor Circuit High
What causes a P28F4 error code?
The most common causes of P28F4 include: Pressure sensor circuit open; Short circuit to positive in the wiring; Clutch pressure sensor malfunction; Poor contact in connectors.
How do I fix a P28F4 diagnostic trouble code?
To fix P28F4: 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. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P28F4?
Limited driving only, diagnose soon
How much does it cost to fix P28F4?
The estimated repair cost for P28F4 is $28–89. Actual cost depends on your vehicle, location, and labor rates.
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