P28F2
Engine Disconnect Clutch Pressure Sensor Circuit Range/Performance
The engine disconnect clutch pressure signal does not match plausibility checks against actuator commands. Sensor drift or installation offset.
- Check engine light: Yes
- Emissions related: No
- Repair difficulty: hard
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
Common causes
Ordered by how often each turns out to be the cause.
- Sensor zero point driftedCommon
- Sensor mounting loose - bias offsetPossible
- Sensor element aged beyond calibration windowLess likely
Parts involved
- Engine Disconnect Clutch Pressure Sensor
- Hybrid Control Module
P28F2 is a generic OBD-II code defined by SAE J2012. Exact wording and diagnostic procedure vary by manufacturer and model. Code definitions are drawn from the public-domain OBDex dataset; the workshop notes are our own.