AutoCodes – Chrysler – U0403 Chrysler

U0403 Chrysler Code - Invalid Data Received From Transfer Case 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 Transfer Case Control Module, Transfer Case Control Module harness is open or shorted, Transfer Case 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: U0403 Chrysler indicates Invalid Data Received From Transfer Case Control Module.
Common causes: Common causes include Faulty Transfer Case Control Module, Transfer Case Control Module harness is open or shorted, Transfer Case 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.

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Code Popularity 1,452

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Apr 08, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code U0403 Chrysler 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 Transfer Case Control Module causing its integrity to be questioned.

OBDII Code U0403 Chrysler - Invalid Data Received From Transfer Case Control Module - AutoCodes.com — U0403 Chrysler Code - Invalid Data Received From Transfer Case Control Module

What does this mean?

What are the Possible Causes of the DTC U0403 Chrysler?

Faulty Transfer Case Control Module
Transfer Case Control Module harness is open or shorted
Transfer Case Control Module circuit poor electrical connection
Faulty Powertrain Control Module (PCM)

How to Fix the DTC U0403 Chrysler?

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 U0403 Chrysler 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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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 U0403 Chrysler Code

1. What are the common symptoms of an OBDII code U0403 in a Chrysler vehicle?

The common symptoms include issues with shifting gears, erratic behavior of the transfer case, and dashboard warning lights such as the Service 4WD light.

2. What does the OBDII code U0403 in a Chrysler indicate?

The code U0403 indicates that the engine control module has detected invalid data from the transfer case control module.

3. What are the possible causes of the U0403 code in a Chrysler?

Possible causes include a faulty transfer case control module, wiring issues, poor electrical connections, or software glitches in the control modules.

4. How can I diagnose the U0403 code in my Chrysler?

Diagnosing the U0403 code usually involves using a diagnostic scanner to retrieve the code, inspecting the wiring and connections to the transfer case control module, and testing the module for proper functionality.

5. Can I still drive my Chrysler with the U0403 code?

It is not recommended to drive your Chrysler with the U0403 code present, as it can lead to potential safety issues or further damage to the transfer case system.

6. How can I repair the U0403 code in my Chrysler?

Repair options may include repairing or replacing the transfer case control module, addressing any wiring issues, ensuring proper electrical connections, and updating software if needed.

7. Can a DIY enthusiast fix the U0403 code issue in a Chrysler?

While some may attempt DIY repairs for the U0403 code, it is recommended to seek assistance from a professional mechanic or dealership due to the complexity of the transfer case control module system.

8. Are there any recalls or technical service bulletins related to the U0403 code in Chrysler vehicles?

Check with your local Chrysler dealership or visit the manufacturer's website to see if there are any recalls or technical service bulletins related to the U0403 code for your specific vehicle model.

9. How much does it typically cost to repair the U0403 code in a Chrysler?

Repair costs for the U0403 code can vary depending on the exact cause of the issue, but it may range from a few hundred to over a thousand dollars, including parts and labor.

10. How can I prevent the U0403 code from reoccurring in my Chrysler?

Regular maintenance, such as checking the transfer case system for any signs of wear or damage, ensuring proper electrical connections, and addressing any warning lights promptly, can help prevent the U0403 code from reoccurring.