P288C
Engine Disconnect Clutch Actuator Control Circuit Driver Current/Temperature Too High
The output driver for the engine disconnect clutch actuator reports current or junction temperature above its protection threshold. Sustained high load on the actuator or short-circuit fault.
- 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.
- Short to ground in actuator wiringCommon
- Actuator mechanically jammed — high stall currentPossible
Parts involved
- Engine Disconnect Clutch Actuator
- Hybrid Control Module
P288C 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.