Engine-Codes - Generic - U1024

U1024 Code - VVEL Control Module CAN Communication

- Code Popularity: 19,238 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
Table of contents
ChatAC AutoCodes.com AI Chat

What are the Possible Causes of the DTC U1024?

NOTE: The causes shown may not be a complete list of all potential problems, and it is possible that there may be other causes.
  • Faulty Variable Valve Event & Lift (VVEL) Control Module
  • VVEL Control Module harness is open or shorted
  • VVEL Control Module circuit poor electrical connection
  • Faulty Engine Control Module (ECM)
⚠ Does your Car have Safety Recalls? → Check here

How to Fix the DTC U1024?

Check the 'Possible Causes' listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins.

Search for U1024 Questions and Answers: Search here →

What is the Cost to Diagnose the Code?

Labor: 1.0

The cost to diagnose the U1024 code is 1.0 hour of labor. The diagnosis time and labor rates at auto repair shops vary depending on the location, make and model of the vehicle, and even the engine type. Most auto repair shops charge between $75 and $150 per hour.

What are Code Possible Symptoms?

  • Engine Light ON (or Service Engine Soon Warning Light)

What Does the U1024 Code Mean?

The Controller Area Network (CAN) is a serial communication line for real-time applications. It is an on-vehicle multiplex communication line with high data communication speed and excellent error detection ability. Engine Control Module (ECM) and Variable Valve Event & Lift (VVEL) Control Module are connected with two communication lines (CAN H line and CAN L line) and transmit/receive data. ECM shares information and links with the VVEL control module during operation.
The Diagnostic Trouble Code (DTC) when the Variable Valve Event & Lift (VVEL) Control Module cannot transmit/receive can communication signal from the Engine Control Module (ECM).

U1024 Code - VVEL Control Module CAN Communication

Need more Information on the Code?

Need more information on how to fix the U1024 code? Get Access to Factory Service Manuals

Code U1024 Information for Specific Makes

Need Help with the Code?

Get the U1024 code diagnosed by a professional: Find a repair shop in your area