AutoCodes – Cadillac – U0405 Cadillac

U0405 Cadillac Code - Invalid Data Received From Cruise Control Module

Quick Answer

A Controller Area Network (CAN) is a vehicle bus standard designed to interconnect automotive devices without a host computer. Common causes include Faulty Cruise Control Module, Cruise Control Module harness is open or shorted, Cruise Control Module circuit poor electrical connection. 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 Cadillac indicates Invalid Data Received From Cruise Control Module.
Common causes
Common causes include Faulty Cruise Control Module, Cruise Control Module harness is open or shorted, Cruise Control Module circuit poor electrical connection.
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.
AI answers can be wrong. Verify repairs with testing. Open full chat
Code Popularity 812
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Apr 08, 2020
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Code U0405 Cadillac 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. Some devices are constantly receiving information from other devices through serial data communication network. The invalid data Diagnostic Trouble Code (DTC) will be set when a receiving device detects a discrepancy in the information it receives from the Cruise Control Module causing its integrity to be questioned.
OBDII Code U0405 Cadillac - Invalid Data Received From Cruise Control Module - AutoCodes.com
U0405 Cadillac Code - Invalid Data Received From Cruise Control Module

What are the Possible Causes of the DTC U0405 Cadillac?

  • Faulty Cruise Control Module
  • Cruise Control Module harness is open or shorted
  • Cruise Control Module circuit poor electrical connection

How to Fix the DTC U0405 Cadillac?

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 U0405 Cadillac 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.

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Need Help with the Code?

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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 U0405 Cadillac Code

1. What are common symptoms of the OBDII code U0405 in a Cadillac related to the Cruise Control Module?

The common symptoms include the cruise control not working, the cruise control light staying on, and the vehicle's speed not being able to be set or maintained.

2. What can cause the OBDII code U0405 in a Cadillac indicating "Invalid Data Received From Cruise Control Module"?

Possible causes include a faulty cruise control module, damaged wiring harnesses, loose electrical connections, or software issues within the vehicle's system.

3. How can I diagnose the OBDII code U0405 in a Cadillac related to the Cruise Control Module?

You can diagnose this issue by using an OBDII scanner to read the code, checking the cruise control module for any visible damage, inspecting the wiring for any signs of wear or breaks, and testing the electrical connections for proper voltage.

4. Is it safe to continue driving with the OBDII code U0405 in a Cadillac and the Cruise Control Module issue?

It is generally safe to drive without using the cruise control function, but it is recommended to address the underlying problem to prevent any potential issues with the vehicle's electronic systems.

5. Can I repair the OBDII code U0405 in a Cadillac related to the Cruise Control Module myself?

Depending on your skill level and experience with automotive repairs, you may be able to repair this issue yourself by inspecting the cruise control module, checking the wiring, and fixing any loose connections. However, it is recommended to seek professional help if needed.

6. Is resetting the OBDII code U0405 in a Cadillac sufficient to fix the Cruise Control Module problem?

Resetting the code may temporarily clear the error, but it will not fix the underlying issue causing the "Invalid Data Received From Cruise Control Module" fault. It is essential to diagnose and repair the root cause of the problem.

7. Are there any specific tools required to repair the OBDII code U0405 in a Cadillac related to the Cruise Control Module?

You may need basic hand tools, an OBDII scanner to read and clear the code, and possibly a multimeter to test electrical connections and voltages while diagnosing and repairing this issue.

8. How much does it typically cost to repair the OBDII code U0405 in a Cadillac indicating a problem with the Cruise Control Module?

The cost of repairs can vary depending on the specific cause of the issue. It may range from a few hundred dollars for simple fixes like loose connections to over a thousand dollars for more complex problems like a faulty cruise control module.

9. Will fixing the OBDII code U0405 in a Cadillac related to the Cruise Control Module improve fuel efficiency or performance?

The primary purpose of fixing this code is to ensure the proper functioning of the cruise control system. While it may indirectly contribute to overall vehicle performance, it is unlikely to have a significant impact on fuel efficiency.

10. Can extreme weather conditions affect the occurrence of the OBDII code U0405 in a Cadillac related to the Cruise Control Module?

Extreme weather conditions such as extreme heat or cold can potentially impact the electronic components and wiring in the cruise control system, leading to issues like the "Invalid Data Received From Cruise Control Module" fault. It is essential to keep the vehicle well-maintained to minimize such risks.

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