OBD-II code · Powertrain (generic, extended)
P28F6 Engine Disconnect Clutch Actuator Circuit Intermittent
The control circuit of the engine disconnect clutch actuator drops out intermittently. Loose connector or vibration-sensitive wiring.
Is it safe to drive with P28F6?
The car may go into limp mode (reduced power). Get it diagnosed before a long trip.
Common causes
- Most likelyActuator connector not seated
- PossibleHarness chafing intermittently shorts the wire
- Less likelyConnector with intermittent contact under vibration
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 Actuator, Wiring Harness
Related codes
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.