AutoCodes – Honda – B1229 Honda

B1229 Honda Code - Open In The Sunlight Sensor Circuit

Quick Answer

The Climate Control Unit monitors the Sunlight Sensor. Common causes include Faulty Sunlight Sensor, Sunlight Sensor harness is open or shorted, Sunlight Sensor circuit poor electrical connection. Severity is Low - monitor the vehicle and repair when practical. The vehicle can usually be driven if no severe symptoms are present, but symptoms should be checked before extended driving.

What it means: B1229 Honda indicates Open In The Sunlight Sensor Circuit.
Common causes: Common causes include Faulty Sunlight Sensor, Sunlight Sensor harness is open or shorted, Sunlight Sensor circuit poor electrical connection.
Severity: Low - monitor the vehicle and repair when practical.
Can I drive?: The vehicle can usually be driven if no severe symptoms are present, but symptoms should be checked before extended driving.

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Code Popularity 7,727

How popular is this code, among other codes? Low

Repair Importance Level

Low (Monitor) (1 / 3)

Repair Difficulty Level

Intermediate (2 / 3)

What is this?

Table of contents Created and updated by William Orellana on Nov 19, 2024

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B1229 Honda Description

The Climate Control Unit monitors the Sunlight Sensor. The Climate Control Unit sets the OBDII code when the Sunlight Sensor is not to factory specifications.

OBDII Code B1229 Honda - Open In The Sunlight Sensor Circuit - AutoCodes.com — B1229 Honda Code - Open In The Sunlight Sensor Circuit

What does this mean?

What are the Possible Causes of the DTC B1229 Honda?

Faulty Sunlight Sensor
Sunlight Sensor harness is open or shorted
Sunlight Sensor circuit poor electrical connection
Faulty Climate Control Unit

How to Fix the DTC B1229 Honda?

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 B1229 Honda 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 B1229 Honda code?

Need more information on how to fix the B1229 Honda code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B1229 Honda 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 B1229 Honda Code

1. What are the common symptoms of OBDII code B1229 in a Honda related to an open in the sunlight sensor circuit?

The common symptoms include erratic behavior of the automatic headlights, the automatic headlights not functioning properly, or the sunlight sensor not responding.

2. What can cause the OBDII code B1229 in a Honda indicating an open in the sunlight sensor circuit?

The code B1229 can be caused by a faulty sunlight sensor, damaged wiring in the sunlight sensor circuit, or a poor electrical connection.

3. How can I diagnose the OBDII code B1229 in my Honda due to an open in the sunlight sensor circuit?

You can diagnose this issue by visually inspecting the wiring and sensor for any damage, testing the sensor's resistance, and checking for proper voltage at the sensor connector.

4. Is it safe to continue driving my Honda with the OBDII code B1229 related to an open in the sunlight sensor circuit?

While it is generally safe to drive, it is recommended to address the issue promptly to ensure proper functioning of the automatic headlights and other related systems.

5. Can I repair the open in the sunlight sensor circuit causing the OBDII code B1229 in my Honda myself?

If you have experience with automotive electrical systems and the necessary tools, you may be able to repair the issue yourself by fixing the wiring or replacing the sunlight sensor.

6. Will resetting the OBDII code B1229 in my Honda fix the problem with the open in the sunlight sensor circuit?

Resetting the code may temporarily clear the warning light, but it will not fix the underlying issue causing the code to appear. It's important to diagnose and repair the root cause.

7. How much does it typically cost to repair the open in the sunlight sensor circuit triggering the OBDII code B1229 in a Honda?

The cost of repair can vary depending on the extent of the damage and whether you choose to repair it yourself or take it to a professional. It may range from a simple fix to a more involved repair.

8. Are there any preventive measures I can take to avoid the OBDII code B1229 related to an open in the sunlight sensor circuit in my Honda?

To prevent this issue, you can periodically inspect the sunlight sensor and wiring for any signs of damage, ensure proper maintenance of your vehicle's electrical system, and avoid exposing the sensor to harsh conditions.

9. Can extreme weather conditions, such as intense sunlight or heavy rain, contribute to triggering the OBDII code B1229 in a Honda?

Yes, extreme weather conditions can potentially affect the sunlight sensor and its circuit, leading to issues that trigger the B1229 code. It's important to protect the sensor from harsh elements.

10. Will the OBDII code B1229 related to an open in the sunlight sensor circuit affect the overall performance of my Honda vehicle?

While the code may not directly impact the performance of the vehicle, it can affect the functionality of certain features like automatic headlights, potentially compromising safety and convenience.