OBD Guide

P28F0

Engine Disconnect Clutch Actuator Stuck On

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$17–67 (est.)

Symptoms

  • Rough engine idling
  • Problems with gear shifting (for robotic gearboxes)
  • Deterioration in braking performance
  • Increased fuel consumption
  • Engine warning light comes on

Causes

  • Clutch release solenoid valve malfunction
  • Mechanical valve jamming in open position
  • Short circuit in valve control circuit
  • Problems with vacuum lines or connections
  • Engine control unit malfunction

How to Fix

  1. Diagnosis of the condition of the solenoid valve and its control circuit
  2. Checking the integrity of vacuum lines and connections
  3. Replacing a faulty solenoid valve
  4. Check and repair wiring if necessary
  5. Reset the fault code and test run the system

Related codes

Error P28F0 by Vehicle Brand