AutoCodes – Chevrolet – U1727 Chevrolet

U1727 Chevrolet Code - Right Headlamp High Beam Control Module Lost Communication With Right Headlamp Leveling Actuator

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 Right Headlamp Leveling Actuator, Right Headlamp Leveling Actuator harness is open or shorted, Right Headlamp Leveling Actuator 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: U1727 Chevrolet indicates Right Headlamp High Beam Control Module Lost Communication With Right Headlamp Leveling Actuator.
Common causes: Common causes include Faulty Right Headlamp Leveling Actuator, Right Headlamp Leveling Actuator harness is open or shorted, Right Headlamp Leveling Actuator 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 499

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 Jun 04, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code U1727 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) will set when a supervised periodic message to the Right Headlamp High Beam Control Module from the Right Headlamp Leveling Actuator has not been received.

OBDII Code U1727 Chevrolet - Right Headlamp High Beam Control Module Lost Communication With Right Headlamp Leveling Actuator - AutoCodes.com — U1727 Chevrolet Code - Right Headlamp High Beam Control Module Lost Communication With Right Headlamp Leveling Actuator

What does this mean?

What are the Possible Causes of the DTC U1727 Chevrolet?

Faulty Right Headlamp Leveling Actuator
Right Headlamp Leveling Actuator harness is open or shorted
Right Headlamp Leveling Actuator circuit poor electrical connection
Faulty Right Headlamp High Beam Control Module

How to Fix the DTC U1727 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 U1727 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 U1727 Chevrolet Code

1. What are the common symptoms of OBDII code U1727 in a Chevrolet related to the right headlamp control module?

- Common symptoms include the right headlamp not adjusting properly, high beam function not working, and possible dashboard warning lights.

2. What can cause the U1727 code in a Chevrolet indicating a communication loss between the right headlamp control module and the leveling actuator?

- Possible causes include damaged wiring, a faulty control module, a malfunctioning headlamp leveling actuator, or a poor connection.

3. How can I diagnose the U1727 code in a Chevrolet myself?

- You can start by checking the wiring connections, inspecting for any visible damage, and using an OBDII scanner to retrieve the specific fault codes.

4. Is it safe to continue driving with the U1727 code present in a Chevrolet?

- It is not recommended to drive with this code present, as it can affect the proper functioning of the right headlamp, compromising visibility and safety.

5. Can I reset the U1727 code in a Chevrolet myself, or do I need a professional to do it?

- You can try resetting the code yourself using an OBDII scanner, but if the underlying issue is not addressed, the code is likely to reappear.

6. Are there any DIY repair tips for fixing the U1727 code in a Chevrolet?

- DIY repair tips may include checking and repairing any damaged wiring, ensuring proper connections, and replacing any faulty components identified during diagnosis.

7. How much can I expect to pay to repair the U1727 code in a Chevrolet at a professional auto repair shop?

- The cost of repairs can vary depending on the exact cause of the issue, but it may involve diagnostic fees, parts replacement costs, and labor charges, which can range from a few hundred to over a thousand dollars.

8. Will the U1727 code in a Chevrolet cause the vehicle to fail an emissions test?

- The U1727 code is related to the right headlamp control system and is unlikely to cause the vehicle to fail an emissions test, but it should still be addressed for safety and functionality reasons.

9. Can extreme weather conditions or rough road conditions trigger the U1727 code in a Chevrolet?

- While extreme weather or rough road conditions may not directly trigger the U1727 code, they can potentially exacerbate existing issues with the right headlamp control system.

10. How long does it typically take to repair the U1727 code in a Chevrolet?

- The repair time can vary depending on the exact cause of the issue, the availability of parts, and the expertise of the technician, but it may take a few hours to a day to complete the repairs.