AutoCodes – Honda – P2629 Honda

P2629 Honda Code - Air/Fuel Ratio Sensor Bank 2 Sensor 1 Circuit Open

Quick Answer

The front air/fuel ratio (A/F) sensor (bank 2, sensor 1) is installed in the exhaust manifold and detects oxygen content in the exhaust gas. Common causes include Faulty Air/Fuel Ratio Sensor Bank 2 Sensor 1, Air/Fuel Ratio Sensor Bank 2 Sensor 1 harness is open or shorted, Air/Fuel Ratio Sensor Bank 2 Sensor 1 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: P2629 Honda indicates Air/Fuel Ratio Sensor Bank 2 Sensor 1 Circuit Open.
Common causes: Common causes include Faulty Air/Fuel Ratio Sensor Bank 2 Sensor 1, Air/Fuel Ratio Sensor Bank 2 Sensor 1 harness is open or shorted, Air/Fuel Ratio Sensor Bank 2 Sensor 1 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.

Save to My Repairs My Repairs

AI answers can be wrong. Verify repairs with testing. Open full chat

Code Popularity 1,881

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Intermediate (2 / 3)

What is this?

Table of contents Created and updated by William Orellana on Jan 22, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
Add Comment

💬 Need more help? Ask Coddy for instant answers — it's free!

Code P2629 Honda Description

The front air/fuel ratio (A/F) sensor (bank 2, sensor 1) is installed in the exhaust manifold and detects oxygen content in the exhaust gas. The front A/F sensor transmits output voltage to the Powertrain Control Module (PCM). The PCM controls fuel injection duration by comparing the target air/fuel ratio with the front A/F sensor signal. The sensor includes the VS cell, the pump cell, the atmospheric reference cavity, the diffusion layer, and the heater, and it enables overall feedback control. The front A/F sensor (bank 2, sensor 1) has a built-in LABEL resistance to regulate the differences of the sensor characteristics. The PCM reads the resistance to regulate the difference properly. If the LABEL resistance (VLBLB 2 signal voltage) is a set value or more, the PCM detects a malfunction and stores a DTC.

OBDII Code P2629 Honda - Air/Fuel Ratio Sensor Bank 2 Sensor 1 Circuit Open - AutoCodes.com — P2629 Honda Code - Air/Fuel Ratio Sensor Bank 2 Sensor 1 Circuit Open

What does this mean?

What are the Possible Causes of the DTC P2629 Honda?

Faulty Air/Fuel Ratio Sensor Bank 2 Sensor 1
Air/Fuel Ratio Sensor Bank 2 Sensor 1 harness is open or shorted
Air/Fuel Ratio Sensor Bank 2 Sensor 1 circuit poor electrical connection

How to Fix the DTC P2629 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 P2629 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 P2629 Honda code?

Need more information on how to fix the P2629 Honda code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P2629 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 P2629 Honda Code

1. What are common symptoms of OBDII code P2629 in a Honda related to the Air/Fuel Ratio Sensor Bank 2 Sensor 1 Circuit Open?

- Common symptoms include poor fuel economy, rough idling, and a noticeable decrease in engine performance.

2. What can cause the Air/Fuel Ratio Sensor Bank 2 Sensor 1 Circuit Open error code in a Honda?

- The code P2629 can be triggered by a faulty air/fuel ratio sensor, damaged wiring or connectors, or issues with the sensor's heating element.

3. How can I diagnose the cause of OBDII code P2629 in my Honda?

- To diagnose the issue, you can use an OBDII scanner to check the code, visually inspect the sensor and its connections, and perform circuit tests to identify the fault.

4. Can I still drive my Honda with the P2629 error code present?

- It is not recommended to drive your Honda with the P2629 code as it can lead to decreased fuel efficiency and potentially cause further damage to the engine.

5. How can I repair the Air/Fuel Ratio Sensor Bank 2 Sensor 1 Circuit Open issue in my Honda?

- Repairing this issue may involve replacing the faulty air/fuel ratio sensor, repairing damaged wiring or connectors, or addressing any issues with the sensor's heating element.

6. Is it necessary to reset the OBDII code P2629 after repairing the issue in my Honda?

- Yes, it is recommended to reset the code after repairing the problem to clear the error message and ensure that the issue has been successfully resolved.

7. Can a DIY enthusiast fix the OBDII code P2629 in a Honda themselves?

- Depending on the level of expertise, DIY enthusiasts can attempt to fix the issue by following repair guides and using the right tools for the job.

8. How much does it typically cost to repair the Air/Fuel Ratio Sensor Bank 2 Sensor 1 Circuit Open code in a Honda?

- The cost of repairing this issue can vary based on the extent of the damage and the parts needed, but it can range from $200 to $500 at a repair shop.

9. Are there any preventive maintenance tips to avoid encountering the P2629 error code in a Honda?

- Regularly inspecting and maintaining the air/fuel ratio sensor, as well as keeping an eye on the vehicle's overall health, can help prevent issues that lead to the P2629 code.

10. Will the P2629 error code in a Honda cause the check engine light to illuminate?

- Yes, the OBDII code P2629 related to the Air/Fuel Ratio Sensor Bank 2 Sensor 1 Circuit Open will trigger the check engine light to come on in the vehicle.