OBD Guide

P28D8

Clutch B Motor Overspeed

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$56–167 (est.)

Symptoms

  • Check Engine light comes on
  • Gear shifting problems
  • Unusual noises from the clutch area
  • Reduced clutch efficiency
  • The car may go into emergency mode

Causes

  • Clutch motor fault B
  • Problems with wiring or connectors
  • Mechanical wear of clutch components
  • Transmission control module (TCM) malfunction
  • Problems with clutch motor power supply

How to Fix

  1. Check the condition of clutch motor B
  2. Inspect wiring and connectors for damage
  3. Check clutch mechanical components for wear
  4. Test the transmission control module (TCM)
  5. Replace faulty components if necessary

Related codes

Error P28D8 by Vehicle Brand