AutoCodes – Honda – P2626 Honda

P2626 Honda Code - Air/Fuel Ratio Sensor Bank 1 Sensor 1 Circuit Open

Quick Answer

The front air/fuel ratio (A/F) sensor (bank 1, 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 1 Sensor 1, Air/Fuel Ratio Sensor Bank 1 Sensor 1 harness is open or shorted, Air/Fuel Ratio Sensor Bank 1 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: P2626 Honda indicates Air/Fuel Ratio Sensor Bank 1 Sensor 1 Circuit Open.
Common causes: Common causes include Faulty Air/Fuel Ratio Sensor Bank 1 Sensor 1, Air/Fuel Ratio Sensor Bank 1 Sensor 1 harness is open or shorted, Air/Fuel Ratio Sensor Bank 1 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.

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Code Popularity 4,397

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
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Code P2626 Honda Description

The front air/fuel ratio (A/F) sensor (bank 1, 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 1, 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 P2626 Honda - Air/Fuel Ratio Sensor Bank 1 Sensor 1 Circuit Open - AutoCodes.com — P2626 Honda Code - Air/Fuel Ratio Sensor Bank 1 Sensor 1 Circuit Open

What does this mean?

What are the Possible Causes of the DTC P2626 Honda?

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

How to Fix the DTC P2626 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 P2626 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.

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Need more information on how to fix the P2626 Honda code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P2626 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 P2626 Honda Code

What does the OBDII code P2626 mean for a Honda vehicle?

The OBDII code P2626 indicates that there is an issue with the air/fuel ratio sensor Bank 1 Sensor 1, specifically that the circuit is open, which means there is a break in the wiring or a fault in the sensor itself.

What are the common symptoms of the P2626 code?

Common symptoms include poor fuel economy, increased emissions, rough idling, check engine light illumination, and possible performance issues while driving.

What can cause the P2626 code to trigger?

Causes can include a faulty air/fuel ratio sensor, damaged wiring or connectors, a blown fuse, or issues with the engine control module (ECM).

How can I diagnose the P2626 code?

Start by visually inspecting the wiring and connectors for damage, then use a multimeter to check the voltage and resistance of the air/fuel ratio sensor. Additionally, scan for other related trouble codes that may provide further insight.

What is the likely repair for the P2626 code?

The most common repair is to replace the faulty air/fuel ratio sensor. However, if wiring issues are found, repairing or replacing damaged wires or connectors may also be necessary.

Can I drive my Honda with a P2626 code?

While it is possible to drive the vehicle, it is not recommended as it may lead to poor performance, reduced fuel efficiency, and increased emissions. It's best to address the issue promptly.

Will clearing the P2626 code fix the problem?

Clearing the code may turn off the check engine light temporarily, but it will not fix the underlying issue. The code will likely reappear if the problem isn't resolved.

How much does it typically cost to repair a P2626 code?

Repair costs can vary widely, but replacing the air/fuel ratio sensor usually ranges from $100 to $300, including parts and labor, depending on the vehicle and local labor rates.

Is the P2626 code specific to Honda vehicles?

While the P2626 code can occur in Honda vehicles, it is not exclusive to them. This code may appear in other makes and models as well, following the OBDII diagnostic standards.

What should I do if the P2626 code keeps returning after repairs?

If the code returns, recheck the sensor and wiring for any overlooked issues, test the ECM for faults, and consider seeking help from a professional mechanic for a more thorough diagnosis.