OBD Guide

U0061

Vehicle Communication Bus D (-) Low

Severity
⚠️ Medium
Can you drive?
Yes, but get it checked soon
Approx. repair cost
$6–56 (est.)

Symptoms

  • Unstable engine operation
  • Problems with data transfer between control units
  • Check Engine light comes on
  • Lost connection with diagnostic equipment

Causes

  • Open or short circuit in CAN bus wiring
  • Damaged connectors or corroded contacts
  • Malfunction of one of the electronic control units
  • Problems with CAN bus power supply

How to Fix

  1. Check the integrity of the CAN bus wiring
  2. Inspect and clean CAN bus connectors
  3. Check CAN bus power supply
  4. Diagnose the operation of related ECUs

Related codes

Error U0061 by Vehicle Brand