AutoCodes – Chrysler – U1004 Chrysler

U1004 Chrysler Code - Controller Area Network Bus Transmit Performance

Quick Answer

The Diagnostic Trouble Code (DTC) sets if the Controller Area Network (CAN) frame does not receive acknowledgment for a predefined amount of time. Common causes include Intermittent Controller Area Network Bus Transmit Performance, Check for other codes, Faulty Anti-lock Brake System (ABS) Module. 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
U1004 Chrysler indicates Controller Area Network Bus Transmit Performance.
Common causes
Common causes include Intermittent Controller Area Network Bus Transmit Performance, Check for other codes, Faulty Anti-lock Brake System (ABS) Module.
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 726
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Apr 15, 2020
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Code U1004 Chrysler Description

The Diagnostic Trouble Code (DTC) sets if the Controller Area Network (CAN) frame does not receive acknowledgment for a predefined amount of time.
OBDII Code U1004 Chrysler - Controller Area Network Bus Transmit Performance - AutoCodes.com
U1004 Chrysler Code - Controller Area Network Bus Transmit Performance

What are the Possible Causes of the DTC U1004 Chrysler?

  • Intermittent Controller Area Network Bus Transmit Performance
  • Check for other codes
  • Faulty Anti-lock Brake System (ABS) Module
  • Anti-lock Brake System (ABS) Module harness is open or shorted
  • Anti-lock Brake System (ABS) Module circuit poor electrical connection

How to Fix the DTC U1004 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 U1004 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.

Need more information about the U1004 Chrysler code?

Need more information on how to fix the U1004 Chrysler code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the U1004 Chrysler code diagnosed by a professional: Find a repair shop in your area

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 U1004 Chrysler Code

1. What are common symptoms of OBDII code U1004 in a Chrysler vehicle?

- Common symptoms include intermittent or total loss of communication with various control modules, dashboard warning lights, and potentially erratic vehicle behavior.

2. What are some possible causes of the U1004 code in a Chrysler vehicle?

- The U1004 code can be triggered by issues such as wiring faults, damaged connectors, faulty control modules, or a malfunctioning Controller Area Network (CAN) bus.

3. How can I diagnose the U1004 code in my Chrysler vehicle?

- Diagnosis typically involves inspecting the wiring and connectors for damage, checking the control modules for proper functioning, and using a scan tool to monitor CAN bus communication.

4. Can a DIY enthusiast repair the U1004 code issue in a Chrysler vehicle?

- While basic checks like inspecting wiring and connectors can be done by DIY enthusiasts, diagnosing and repairing complex CAN bus issues may require professional expertise and specialized tools.

5. Are there any specific repair tips for resolving the U1004 code in a Chrysler vehicle?

- Repair tips may include checking for loose connections, ensuring proper grounding, resetting the control modules, and updating software or firmware as recommended by Chrysler.

6. Is it safe to continue driving with the U1004 code illuminated in a Chrysler vehicle?

- It is not recommended to drive with the U1004 code active, as it can lead to potential safety hazards due to compromised communication between critical control modules.

7. What should I do if the U1004 code keeps recurring in my Chrysler vehicle after repairs?

- If the U1004 code keeps recurring after repairs, it is advisable to seek assistance from a qualified technician to conduct a thorough diagnosis and address any underlying issues.

8. Can extreme weather conditions affect the occurrence of the U1004 code in a Chrysler vehicle?

- Extreme temperatures or humidity levels can potentially impact the CAN bus communication and trigger the U1004 code in a Chrysler vehicle.

9. Are there any software updates or recalls related to the U1004 code in Chrysler vehicles?

- Chrysler may release software updates or issue recalls to address specific instances of the U1004 code, so it's advisable to check with the manufacturer or authorized service centers for any related information.

10. How can I prevent the U1004 code from recurring in my Chrysler vehicle?

- Regular maintenance, proper handling of electrical components, timely repairs of wiring issues, and following Chrysler's recommended service intervals can help prevent the U1004 code from recurring.

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