OBD Guide

B3397

Left Rear Window Up Switch Circuit Low

Severity
Low
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$6–56 (est.)

Symptoms

  • The left rear window doesn't work
  • Intermittent operation of the window regulator
  • The glass goes up/down spontaneously

Causes

  • Faulty window up switch
  • Open or short circuit in wiring harness
  • Poor contact in the connector
  • Problems with the power window control unit

How to Fix

  1. Check the voltage in the Workers switch circuit
  2. Inspect the wiring harness for damage
  3. Check contacts in connectors
  4. Replace the faulty switch if necessary

Related codes

Error B3397 by Vehicle Brand