OBD Guide

B390A

Short Range Object Sensor Performance

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

Symptoms

  • Incorrect operation of the parking system
  • False collision warnings
  • No audible or visual cues when approaching objects

Causes

  • Sensor contamination
  • Wiring damage
  • Malfunction of the sensor itself
  • Module software failure

How to Fix

  1. Check and clean the sensor from dirt
  2. Check the integrity of wiring and connectors
  3. Test the sensor using diagnostic equipment
  4. Replace sensor if necessary
  5. Update module software

Related codes

Error B390A by Vehicle Brand