Powertrain, generic (extended)

P288C Engine Disconnect Clutch Actuator Control Circuit Driver Current/Temperature Too High

Check engine lightOn
EmissionsRelevant
Drive cycleNot required
Limp modePossible

P288C does not look at the clutch itself but at the electronic switch inside the control module that powers its actuator. Modern driver chips measure their own current and junction temperature; if either exceeds the limit, they shut down and report this condition. Behind it is usually an actuator drawing too much current – a partly shorted coil, a jammed electric motor in electromechanical designs – or a harness fault that loads the output. Ambient heat around a module mounted on the transmission can add to it. No manufacturer has published a description of P288C. CARB requires such outputs to be monitored for proper function. Unlike P2880, which reacts to a voltage level, P288C points to overload, so the actuator should be measured before the module is condemned.

Likely causes

Actuator coil or motor drawing excessive current
Partial short in the actuator wiring
Control module overheating from heat or poor cooling
Defective driver chip in the control module

Symptoms

  • Clutch actuator switched off, engine cannot be coupled
  • Warning lamp, often after long or hot drives
  • Limp-home operation

Repair estimate

DifficultyHardWorkshop job
Parts and labour€100–3,500
Time0.5–6 h

Typical range across vehicles; the real cost depends on what the testing finds.

Parts involved

engine disconnect clutch actuatorhybrid control module

Related codes

P287EP2880P2881P2883

References: law.cornell.edu, static.nhtsa.gov, static.nhtsa.gov.