OBD-II code · Powertrain (generic, extended)
P28F1 Engine Disconnect Clutch Pressure Sensor Circuit
The hybrid control module detects a generic fault on the engine disconnect clutch pressure sensor circuit. Engagement pressure cannot be monitored reliably.
Is it safe to drive with P28F1?
The car may go into limp mode (reduced power). Get it diagnosed before a long trip.
Common causes
- Most likelyPressure sensor failed
- PossibleWiring or connector fault
Symptoms
- Check engine or transmission warning light on
- Harsh, delayed, or missing shifts
- Possible limp mode (locked in one gear)
- Slipping or shuddering during gear changes
Repair at a glance
- Difficulty
- Hard
- DIY friendly
- Best left to a mechanic
- Typical labour
- 2–9 h
- Emissions test
- Usually unaffected
- Parts involved
- Engine Disconnect Clutch Pressure Sensor, Wiring Harness, Hybrid Control Module
Related codes
- P28EEElectric/Auxiliary Transmission Fluid Pump B Underspeed
- P28EFEngine Disconnect Clutch Actuator Performance/Stuck Off
- P28F0Engine Disconnect Clutch Actuator Stuck On
- P28F2Engine Disconnect Clutch Pressure Sensor Circuit Range/Performance
- P28F3Engine Disconnect Clutch Pressure Sensor Circuit Low
- P28F4Engine Disconnect Clutch Pressure Sensor Circuit High
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.