U1024 - VVEL CAN communication

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3   
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U1024 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)

First diagnose 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 terminals.

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 labor rates vary by location, your vehicle's make and model, and even your engine type. Most auto repairs shops charge between $75 and $150 per hour.

When is the U1024 code detected?

When Variable Valve Event & Lift (VVEL) control module cannot transmit/receive can communication signal from Engine Control Module (ECM).

U1024 Possible Symptoms

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

U1024 Description

CAN (Controller Area Network) is a serial communication line for real time application. 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.
OBDII Code U1024 - VVEL CAN communication - AutoCodes.com

U1024 More Information

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