AutoCodes - Generic - U1024

U1024 Code - VVEL Control Module CAN Communication

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3
Table of contents

|U1024 code possible 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)

|How do I fix the U1024 code?

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's pins.

|Cost of diagnosing the U1024 code

Labor: 1.0

The cost of diagnosing the U1024 code is 1.0 hour of labor. The auto repair's diagnosis time and labor rates vary by location, vehicle's make and model, and even your engine type. Most auto repair shops charge between $75 and $150 per hour.

|What are U1024 code possible symptoms?

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

|U1024 code description

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).
OBDII Code U1024 - VVEL Control Module CAN Communication -

|Need more information with the U1024 code?

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

|U1024 code information for specific makes

|Need help with a U1024 code?

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|U1024 code comments

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