OBD Guide

U0062

Vehicle Communication Bus D (-) High

Severity
🔴 High
Can you drive?
Do not drive — repair immediately
Approx. repair cost
$6–56 (est.)

Symptoms

  • Loss of communication between modules
  • Inoperative or incorrectly functioning vehicle systems
  • Check Engine Light Illuminates
  • Problems starting the engine
  • Dashboard malfunctions

Causes

  • Open or short circuit in the negative line of the CAN bus
  • Poor contact in bus connectors
  • Fault in one of the modules connected to the bus
  • Wiring harness damage
  • Contact corrosion

How to Fix

  1. Check the integrity of the negative line of the CAN bus
  2. Inspect connectors and contacts for damage or corrosion
  3. Check the status of modules connected to the bus
  4. Replace damaged wires or connectors
  5. Flash or replace the faulty module if necessary

Related codes

Error U0062 by Vehicle Brand