Engine Disconnect Clutch
The clutch a hybrid uses to drop its engine off the driveline entirely. In many hybrid layouts it sits between the engine and the electric motor: open, the car drives purely electrically with the engine stopped; closed, the engine joins in to drive and to charge. Every transition between electric and engine drive passes through it, slipping deliberately during each blend so the join is seamless.
Its faults show at the seams: shudder or a thump exactly when the engine joins or leaves, electric-only running that has quietly stopped, or an engine that idles at stops it used to sleep through. Stuck open removes engine drive; stuck closed defeats electric drive — opposite failures with opposite symptoms, through one part.
It is a real friction clutch with a real actuator, and it suffers most from slipping under high torque — hard acceleration at the exact moment of engine join is its hardest duty.
Also known as: k0 clutch, kzero clutch, engine clutch, separation clutch, disconnect clutch
Referenced by 22 codes
Codes involving this component (22)
- P2882 Engine Disconnect Clutch Excessive Slippage Stop driving High
- P2883 Engine Disconnect Clutch Temperature Too High Stop driving High
- P2884 Engine Disconnect Clutch Stuck Open High
- P2886 Engine Disconnect Clutch Stuck Closed High
- P287E Engine Disconnect Clutch Actuator Circuit/Open Moderate
- P287F Engine Disconnect Clutch Actuator Circuit Range/Performance Moderate
- P2880 Engine Disconnect Clutch Actuator Circuit Low Moderate
- P2881 Engine Disconnect Clutch Actuator Circuit High Moderate
- P2885 Engine Disconnect Clutch Engagement Fault Moderate
- P288C Engine Disconnect Clutch Actuator Control Circuit Driver Current/Temperature Too High Moderate
- P28EF Engine Disconnect Clutch Actuator Performance/Stuck Off
- P28F0 Engine Disconnect Clutch Actuator Stuck On
- P28F1 Engine Disconnect Clutch Pressure Sensor Circuit
- P28F2 Engine Disconnect Clutch Pressure Sensor Circuit Range/Performance
- P28F3 Engine Disconnect Clutch Pressure Sensor Circuit Low
- P28F4 Engine Disconnect Clutch Pressure Sensor Circuit High
- P28F5 Engine Disconnect Clutch Pressure Sensor Circuit Intermittent/Erratic
- P28F6 Engine Disconnect Clutch Actuator Circuit Intermittent
- U02AA Lost Communication With Engine Disconnect Clutch
- U034A Software Incompatibility With Engine Disconnect Clutch
- U05AB Invalid Data Received From Engine Disconnect Clutch
- U067B Lost Communication With Engine Disconnect Clutch Pressure Sensor
Other components in Transmission
- Transmission Control Module 485
- Valve Body 334
- Transmission Fluid 308
- Pressure Control Solenoid 181
- Shift Solenoid 167
- Clutch Pack 122
- Clutch Actuator 89
- Shift Fork 72
- Gear Shift Actuator 72
- Transmission Fluid Pressure Sensor 70
- Electric/Auxiliary Transmission Fluid Pump 67
- Gear Lever Position Sensor 65
- Transmission Range Sensor 58
- Gear Shift Module 58
- Power Take-Off Unit 42
- Park/Neutral Switch 40
- Transmission Fluid Temperature Sensor 33
- Clutch Position Sensor 29
- Torque Converter 28
- Transmission Mode Switch 24
- Transmission Fluid Pump 22
- Transmission Fluid Filter 19
- Torque Converter Clutch Solenoid 17
- Output Speed Sensor 16
- Clutch 15
- Four Wheel Drive Switch 14
- Hydraulic Power Unit 14
- Four-Wheel Drive Clutch Control Module 14
- Manual Shift Switch 13
- Gate Select Actuator 13
- Transfer Case 11
- Intermediate Shaft Speed Sensor 10
- Shift Lock Solenoid 10
- Transfer Case Control Module 10
- Hydraulic Pressure Sensor 8
- Turbine Speed Sensor 7
- Skip Shift Solenoid 5
- Hydraulic Oil Temperature Sensor 5
- Transmission Fluid Cooler 4
- Reverse Inhibit Solenoid 4
- Driveline Disconnect Switch 4
- Reverse Light Switch 2
- Synchroniser 2
Information, not instruction
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