OBD Guide

P28E0

Shift Motor Phase U-V-W Circuit Low

Severity
🔴 High
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$56–222 (est.)

Symptoms

  • Difficult or jerky gear shifting
  • Transmission of the gearbox into emergency mode
  • The Check Engine light comes on
  • Reduced acceleration dynamics
  • Unusual noises from the transmission

Causes

  • Shift motor malfunction
  • Damaged wiring harness or poor connections
  • Short circuit in phase U, V or W
  • Transmission control module (TCM) malfunction
  • Control circuit power or ground problems

How to Fix

  1. Checking the integrity of the U-V-W phase circuit
  2. Diagnostics of the electric gear shift motor
  3. Checking the contacts and condition of the wiring harness
  4. Diagnostics of the transmission control module
  5. Replacing faulty components (motor or wiring harness)

Related codes

Error P28E0 by Vehicle Brand