OBD Guide

B3666

Rear Tonneau Position Error

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

Symptoms

  • Incorrect operation of the automatic trunk lid
  • Error message on the instrument panel
  • The trunk lid does not open/close automatically

Causes

  • Trunk lid position sensor malfunction
  • Wiring harness damage
  • Mechanical failure of the lid drive
  • Problems with the control unit

How to Fix

  1. Check the trunk lid position sensor
  2. Inspect the wiring harness for damage
  3. Check the cover drive mechanism
  4. Scan the control unit for other errors

Related codes

Error B3666 by Vehicle Brand