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AutoCodes – Generic – U0062

U0062 Code - Vehicle Communication Bus 'D' (-) High

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
U0062 indicates Vehicle Communication Bus 'D' (-) High.
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.
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Code Popularity 3,083
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
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Code U0062 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 U0062 - Vehicle Communication Bus 'D' (-) High - AutoCodes.com
U0062 Code - Vehicle Communication Bus 'D' (-) High
What does this mean?

What are the Possible Causes of the DTC U0062?

  • 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 U0062?

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 U0062 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 U0062 code?

Need more information on how to fix the U0062 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the U0062 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 U0062 Code

1. What does OBDII code U0062 mean?

U0062 indicates a problem with the Vehicle Communication Bus 'D' (-), specifically with the high signal line, which affects communication between vehicle modules.

2. What are the common symptoms of code U0062?

Symptoms may include warning lights on the dashboard (e.g., check engine light), failure of specific systems like ABS or airbags, or erratic vehicle behavior.

3. What causes code U0062 to appear?

Possible causes include damaged wiring or connectors, a malfunctioning control module, electrical interference, or a short/open circuit in the communication bus.

4. Can I drive with the U0062 code active?

It’s not advisable to drive with this code active, as it may affect critical safety systems or performance-related features in the vehicle.

5. How can I diagnose the U0062 code?

Start by inspecting the wiring and connectors for corrosion or damage, then test the continuity of the communication bus and check for specific module failures using a scan tool.

6. What tools are needed to troubleshoot code U0062?

You’ll need an OBDII scan tool, a multimeter for testing circuits, and possibly a wiring diagram specific to your vehicle.

7. Is the U0062 code a common issue?

The U0062 code is less common but can appear in vehicles with complex communication networks if there are wiring or module issues.

8. What repairs can fix the U0062 code?

Repairs may include replacing damaged wiring or connectors, repairing or replacing a faulty module, or reprogramming the affected system.

9. How much does it cost to fix a U0062 code?

Repair costs depend on the root cause, ranging from $50-$100 for wiring repairs to several hundred dollars if a module needs replacement.

10. Can a U0062 code clear itself?

The code may clear after resolving the issue, but in many cases, you’ll need to use a scan tool to erase the code and reset the system.

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