AutoCodes – Acura – B1277 Acura

B1277 Acura Code - Headlight Switch AUTO Position Circuit Malfunction

Quick Answer

The Multiplex Integrated Control Unit (MICU) monitors the Headlight Switch Position. Common causes include Faulty Combination Headlight Switch, Combination Headlight Switch harness is open or shorted, Combination Headlight Switch 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: B1277 Acura indicates Headlight Switch AUTO Position Circuit Malfunction.
Common causes: Common causes include Faulty Combination Headlight Switch, Combination Headlight Switch harness is open or shorted, Combination Headlight Switch 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 1,575

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 Nov 29, 2024

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B1277 Acura Description

The Multiplex Integrated Control Unit (MICU) monitors the Headlight Switch Position. The MICU sets the OBDII code when the Headlight Switch Position is not to factory specifications.

OBDII Code B1277 Acura - Headlight Switch AUTO Position Circuit Malfunction - AutoCodes.com — B1277 Acura Code - Headlight Switch AUTO Position Circuit Malfunction

What does this mean?

What are the Possible Causes of the DTC B1277 Acura?

Faulty Combination Headlight Switch
Combination Headlight Switch harness is open or shorted
Combination Headlight Switch circuit poor electrical connection
Faulty Multiplex Integrated Control Unit (MICU)

How to Fix the DTC B1277 Acura?

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 B1277 Acura 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 B1277 Acura code?

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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 B1277 Acura Code

1. What are the common symptoms of OBDII code B1277 in an Acura related to the headlight switch AUTO position circuit malfunction?

- Common symptoms include malfunctioning automatic headlights, dim or flickering headlights, or difficulty switching between headlight settings.

2. What are the possible causes of the B1277 code in an Acura?

- The code B1277 in an Acura typically indicates issues with the headlight switch, wiring problems, a faulty control module, or a malfunctioning light sensor.

3. How can I diagnose the headlight switch AUTO position circuit malfunction in my Acura?

- Use an OBDII scanner to retrieve the specific code and then inspect the headlight switch, wiring connections, control module, and light sensor for any visible damage or issues.

4. Is it safe to continue driving my Acura with the B1277 OBDII code related to the headlight switch malfunction?

- It is not recommended to drive with malfunctioning headlights as it can affect visibility and safety. Get the issue diagnosed and repaired as soon as possible.

5. Can I fix the headlight switch AUTO position circuit malfunction in my Acura myself?

- If you have experience with automotive electrical systems, you may be able to troubleshoot and repair the issue. However, for complex problems or if you are unsure, it is best to consult a professional mechanic.

6. How much does it typically cost to repair the B1277 code in an Acura for the headlight switch AUTO position circuit malfunction?

- The cost of repair can vary depending on the exact cause of the issue, but it may range from $100 to $300 for parts and labor.

7. Are there any temporary fixes I can try for the headlight switch AUTO position circuit malfunction in my Acura?

- Temporary fixes such as manually turning on the headlights or using the high beams can help in the short term, but it is best to address the root cause of the issue for a permanent solution.

8. Will resetting the OBDII code B1277 in my Acura make the issue go away?

- Resetting the code may temporarily clear the warning light, but if the underlying issue with the headlight switch circuit is not fixed, the code is likely to reappear.

9. How long does it usually take to repair the headlight switch AUTO position circuit malfunction in an Acura?

- The repair time can vary based on the complexity of the issue, but a professional mechanic can usually diagnose and repair the problem within a few hours to a day.

10. Can a malfunctioning headlight switch AUTO position circuit affect other electrical systems in my Acura?

- Yes, since the headlight switch is linked to the overall lighting system, a malfunction can potentially affect other electrical systems or cause related warning lights to appear on the dashboard.