AutoCodes – Chevrolet – U1347 Chevrolet

U1347 Chevrolet Code - Engine Control Module LIN Bus 3

Quick Answer

The Local Interconnect Network (LIN) Bus consists of a single wire with a transmission rate of 10.417 Kbit/s. Common causes include Faulty Control Module Setting the Diagnostic Trouble Code (DTC), Control Module harness is open or shorted, 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: U1347 Chevrolet indicates Engine Control Module LIN Bus 3.
Common causes: Common causes include Faulty Control Module Setting the Diagnostic Trouble Code (DTC), Control Module harness is open or shorted, 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 2,939

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 May 16, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code U1347 Chevrolet Description

The Local Interconnect Network (LIN) Bus consists of a single wire with a transmission rate of 10.417 Kbit/s. The serial data is transmitted over a LIN circuit between a master control module and other LIN devices within a particular subsystem. If serial data communication is lost between any of the LIN devices on the LIN bus network, the master control module will set a no communication code against the non-communicating LIN device. The Diagnostic Trouble Code (DTC) sets when a supervised periodic message that includes the transmitter device availability has not been received.

OBDII Code U1347 Chevrolet - Engine Control Module LIN Bus 3 - AutoCodes.com — U1347 Chevrolet Code - Engine Control Module LIN Bus 3

What does this mean?

What are the Possible Causes of the DTC U1347 Chevrolet?

Faulty Control Module Setting the Diagnostic Trouble Code (DTC)
Control Module harness is open or shorted
Control Module circuit poor electrical connection

How to Fix the DTC U1347 Chevrolet?

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 U1347 Chevrolet 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 U1347 Chevrolet Code

1. What are common symptoms of OBDII code U1347 in a Chevrolet related to the Engine Control Module LIN Bus 3?

- Common symptoms include issues with engine performance, rough idling, stalling, or difficulty starting the vehicle.

2. What does the U1347 code indicate about the Engine Control Module LIN Bus 3 in a Chevrolet?

- The code U1347 signifies a communication error or fault within the LIN Bus network connected to the Engine Control Module.

3. What are some possible causes of OBDII code U1347 in a Chevrolet affecting the Engine Control Module LIN Bus 3?

- Potential causes include damaged wiring, loose connections, a faulty control module, or issues with other modules on the LIN Bus network.

4. How can I diagnose and repair OBDII code U1347 in a Chevrolet related to the Engine Control Module LIN Bus 3?

- Diagnose by checking the wiring, connectors, and other modules on the LIN Bus network. Repair may involve repairing or replacing damaged components, resetting the code, and retesting the system.

5. Can a DIY enthusiast address the OBDII code U1347 in a Chevrolet affecting the Engine Control Module LIN Bus 3?

- While basic checks like inspecting connections can be done, diagnosing and repairing LIN Bus communication issues often require advanced diagnostic tools and expertise best handled by a professional technician.

6. Is it safe to drive with OBDII code U1347 triggered in a Chevrolet due to issues with the Engine Control Module LIN Bus 3?

- It's not recommended to drive with the U1347 code active, as it can lead to further electrical system problems and potential engine performance issues.

7. How do I prevent OBDII code U1347 from reoccurring in my Chevrolet related to the Engine Control Module LIN Bus 3?

- Regular maintenance, checking for loose connections, and addressing any wiring issues promptly can help prevent the recurrence of the U1347 code.

8. Can weather conditions or environmental factors trigger OBDII code U1347 in a Chevrolet affecting the Engine Control Module LIN Bus 3?

- Extreme temperatures, moisture, or physical damage to the vehicle's wiring harness can contribute to the emergence of the U1347 code.

9. Are there any software updates or recalls related to OBDII code U1347 in Chevrolet models with issues in the Engine Control Module LIN Bus 3?

- It's advisable to check with Chevrolet dealerships or the manufacturer for any software updates, recalls, or technical service bulletins related to the U1347 code.

10. How long does it typically take to diagnose and repair OBDII code U1347 in a Chevrolet linked to the Engine Control Module LIN Bus 3?

- The time for diagnosis and repair can vary based on the complexity of the issue, the extent of the damage, and the availability of parts. It's best to consult a professional for a more accurate estimate.