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Engine-Codes – Generic – U0405

U0405 Code - Invalid Data Received From Cruise Control Module

Quick Answer

The U0405 diagnostic trouble code (DTC) indicates that the vehicle's onboard computer has detected invalid data being received from the cruise control module. Common causes include Faulty cruise control module, Wiring issues or loose connections, Communication error between module and vehicle's computer. 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
U0405 indicates Invalid Data Received From Cruise Control Module.
Common causes
Common causes include Faulty cruise control module, Wiring issues or loose connections, Communication error between module and vehicle's computer.
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 12, 2024
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Code U0405 Description

The U0405 diagnostic trouble code (DTC) indicates that the vehicle's onboard computer has detected invalid data being received from the cruise control module. This module is responsible for controlling the vehicle's cruise control system, which allows the driver to set a desired speed for the vehicle to maintain automatically. When the computer receives data that is outside of normal parameters or is inconsistent with other data inputs, it triggers the U0405 code.

OBDII Code U0405 - Invalid Data Received From Cruise Control Module
U0405 Code - Invalid Data Received From Cruise Control Module

Common Causes of U0405

  1. Faulty cruise control module
  2. Wiring issues or loose connections
  3. Communication error between module and vehicle's computer
  4. Software glitch in the cruise control system
  5. Electrical interference affecting data transmission

Symptoms of U0405

  1. Cruise control not engaging or maintaining set speed
  2. Inconsistent cruise control behavior
  3. Cruise control disengaging unexpectedly
  4. Check Engine Light illuminated
  5. Vehicle speed fluctuations

How to Fix U0405

  1. Use a diagnostic scanner to retrieve the DTC and identify the specific cause of the issue.
  2. Inspect the wiring and connections related to the cruise control module for any damage or loose connections.
  3. Test the cruise control module for functionality and replace if necessary.
  4. Clear the DTC from the vehicle's computer memory and test the cruise control system to ensure proper operation.
  5. If the issue persists, consult a professional technician for further diagnosis and repair.

Cost to Fix U0405

The typical repair costs for addressing the U0405 code can vary depending on the specific cause of the issue. In general, replacing a faulty cruise control module can range from $200 to $500, including parts and labor. However, additional costs may be incurred if wiring repairs or further diagnosis is needed. It's important to note that labor rates at auto repair shops can vary, so it's advisable to check with local shops for a more accurate estimate.

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Code U0405 Information for Specific Makes

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.

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