AutoCodes.com
Login with Google
AutoCodes – Generic – U0061

U0061 Code - Vehicle Communication Bus 'D' (-) Low

Quick Answer

A Controller Area Network (CAN) is a vehicle bus standard designed to interconnect automotive devices without a host computer. Common causes include Diagnosis of this Diagnostic Trouble Code (DTC) is accomplished via the vehicle symptom(s), Check for more codes, Faulty Control Module. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means
U0061 indicates Vehicle Communication Bus 'D' (-) Low.
Common causes
Common causes include Diagnosis of this Diagnostic Trouble Code (DTC) is accomplished via the vehicle symptom(s), Check for more codes, Faulty Control Module.
Severity
High - diagnose this code as soon as possible.
Can I drive?
Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
Save to My Repairs My Repairs
AI answers can be wrong. Verify repairs with testing. Open full chat
Code Popularity 2,548
How popular is this code, among other codes? Low
What is this?
Table of contents Created and updated by William Orellana on Mar 29, 2020
💬 Need more help? Ask Coddy for instant answers — it's free!

Code U0061 Description

A Controller Area Network (CAN) is a vehicle bus standard designed to interconnect automotive devices without a host computer. Operating information and commands are exchanged among the devices. The devices have programmed information about what messages are needed to be exchanged on the serial data circuits. CAN bus uses two dedicated wires for communication. The wires are called CAN high and CAN low. When the CAN bus is in idle mode, both lines carry 2.5V. When data bits are being transmitted, the CAN high line goes to 3.75V, and the CAN low drops to 1.25V, thereby generating a 2.5V differential between the lines. Since communication relies on a voltage differential between the two bus lines, the CAN bus is NOT sensitive to inductive spikes, electrical fields, or other noise. The Diagnostic Trouble Code (DTC) sets when a supervised periodic message that includes the transmitter device availability has not been received.
OBDII Code U0061 - Vehicle Communication Bus 'D' (-) Low - AutoCodes.com
U0061 Code - Vehicle Communication Bus 'D' (-) Low
What does this mean?

What are the Possible Causes of the DTC U0061?

  • Diagnosis of this Diagnostic Trouble Code (DTC) is accomplished via the vehicle symptom(s)
  • Check for more codes
  • Faulty Control Module
  • Control Module harness is open or shorted
  • Control Module circuit poor electrical connection

How to Fix the DTC U0061?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the U0061 code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

Need more information about the U0061 code?

Need more information on how to fix the U0061 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the U0061 code diagnosed by a professional: Find a repair shop in your area

About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about U0061 Code

1. What does the OBDII code U0061 mean?

U0061 indicates there is an issue with the Vehicle Communication Bus 'D' (-) line being in a low voltage state, disrupting communication between control modules.

2. What are common symptoms of the U0061 code?

Symptoms may include a check engine light, communication errors between modules, malfunctioning vehicle features, and possible performance issues.

3. What causes the U0061 code to appear?

Common causes include damaged wiring, loose or corroded connectors, a failed control module, or an issue with the vehicle's communication network.

4. Can I drive my vehicle with the U0061 code active?

Driving with the U0061 code may be possible, but it’s not recommended as it can affect critical systems and lead to further issues.

5. How do you diagnose the U0061 code?

Diagnosis involves scanning for related codes, visually inspecting wiring and connectors, testing the communication bus for proper voltage, and checking module functionality.

6. What tools are needed to fix the U0061 code?

A diagnostic scanner, multimeter, wiring repair tools, and service manuals for your specific vehicle are commonly needed.

7. Can a weak battery cause the U0061 code?

Yes, a weak or failing battery can cause communication issues, including the U0061 code, due to insufficient voltage for the modules.

8. How much does it cost to repair the U0061 code?

Repair costs vary depending on the cause, ranging from $50 for simple wiring repairs to over $1,000 if a control module needs replacement and reprogramming.

9. Will clearing the U0061 code fix the problem?

Clearing the code will not fix the underlying issue. The cause of the code must be identified and resolved to prevent it from returning.

10. Can a software update fix the U0061 code?

In some cases, a software update for the affected module may resolve the issue, but this depends on the specific vehicle and situation.

Discuss the causes and fixes for U0061 OBDII Code

Submit a New Comment

Code U0061 comments

No comments found for this page.

AutoCodes App

Fix Your Car Smarter

Try the New AutoCodes App!

Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.

AutoCodes App on Google Play