AutoCodes – Acura – P2629 Acura

P2629 Acura 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 Acura 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 1,462

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

What does this mean?

What are the Possible Causes of the DTC P2629 Acura?

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 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 P2629 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 P2629 Acura code?

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

Need Help with the Code?

Get the P2629 Acura 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 Acura Code

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

- Common symptoms include poor fuel economy, rough idling, lack of power, and the illumination of the Check Engine Light.

2. What could cause the Air/Fuel Ratio Sensor Bank 2 Sensor 1 Circuit Open issue in an Acura triggering code P2629?

- Possible causes include a faulty air/fuel ratio sensor, damaged wiring or connectors, exhaust leaks, or issues with the engine control module.

3. How can I diagnose the Air/Fuel Ratio Sensor Bank 2 Sensor 1 Circuit Open problem in my Acura with OBDII code P2629?

- Diagnosis typically involves using an OBDII scanner to retrieve the code, inspecting the sensor and its wiring for damage, and testing the sensor's functionality.

4. Is it safe to continue driving my Acura with the P2629 code related to the Air/Fuel Ratio Sensor issue?

- It is generally not recommended to drive the vehicle with this code present, as it can lead to decreased performance and potential long-term damage to the engine.

5. Can I repair the Air/Fuel Ratio Sensor Bank 2 Sensor 1 Circuit Open problem in my Acura myself?

- While some DIY enthusiasts may be able to replace the sensor or repair wiring issues, it is recommended to consult a professional mechanic for proper diagnosis and repair.

6. How much does it typically cost to fix the Air/Fuel Ratio Sensor Bank 2 Sensor 1 Circuit Open issue causing the P2629 code in an Acura?

- The cost of repair can vary depending on the exact cause of the issue, but it may range from $200 to $500, including parts and labor.

7. Are there any preventive measures I can take to avoid the Air/Fuel Ratio Sensor Bank 2 Sensor 1 Circuit Open problem in my Acura?

- Regular maintenance, such as checking for exhaust leaks and ensuring proper sensor function during tune-ups, can help prevent issues leading to this code.

8. Can a bad oxygen sensor cause the P2629 code related to the Air/Fuel Ratio Sensor in an Acura?

- Yes, a malfunctioning oxygen sensor, particularly in Bank 2 Sensor 1, can trigger the P2629 code related to the Air/Fuel Ratio Sensor issue.

9. Will resetting the Check Engine Light make the P2629 code related to the Air/Fuel Ratio Sensor disappear in my Acura?

- Resetting the Check Engine Light may temporarily clear the code, but if the underlying issue is not addressed, the code is likely to reappear.

10. How long can I safely drive with the P2629 OBDII code related to the Air/Fuel Ratio Sensor Bank 2 Sensor 1 Circuit Open in my Acura?

- It is advisable to address the issue promptly to prevent further damage, so driving should be minimized until the problem is diagnosed and repaired.