AutoCodes – Honda – P2247 Honda

P2247 Honda Code - O2 Sensor Reference Voltage Circuit Open Bank 2 Sensor 1

Quick Answer

The Front Oxygen Sensor (O2 Sensor 1) is placed into the exhaust manifold. Common causes include Faulty Front Oxygen Sensor Bank 2, Front Oxygen Sensor Bank 2 harness is open or shorted, Front Oxygen Sensor Bank 2 circuit poor electrical connection. Severity is Moderate - service should be scheduled soon. The vehicle may still be drivable for short trips if it runs normally, but avoid hard driving and repair it soon.

What it means: P2247 Honda indicates O2 Sensor Reference Voltage Circuit Open Bank 2 Sensor 1.
Common causes: Common causes include Faulty Front Oxygen Sensor Bank 2, Front Oxygen Sensor Bank 2 harness is open or shorted, Front Oxygen Sensor Bank 2 circuit poor electrical connection.
Severity: Moderate - service should be scheduled soon.
Can I drive?: The vehicle may still be drivable for short trips if it runs normally, but avoid hard driving and repair it soon.

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Code Popularity 16,537

How popular is this code, among other codes? Low

Repair Importance Level

Moderate (Service soon) (2 / 3)

Repair Difficulty Level

Intermediate (2 / 3)

What is this?

Table of contents Created and updated by William Orellana on Jun 14, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P2247 Honda Description

The Front Oxygen Sensor (O2 Sensor 1) is placed into the exhaust manifold. It detects the amount of oxygen in the exhaust gas compared to the outside air. The heated oxygen sensor 1 has a closed-end tube made of ceramic zirconia. The zirconia generates voltage from approximately 1V in richer conditions to 0V in leaner conditions. The heated oxygen sensor 1 signal is sent to the Engine Control Module (ECM). The ECM adjusts the injection pulse duration to achieve the ideal air-fuel ratio. The ideal air-fuel ratio occurs near the radical change from 1V to 0V.

OBDII Code P2247 Honda - O2 Sensor Reference Voltage Circuit Open Bank 2 Sensor 1 - AutoCodes.com — P2247 Honda Code - O2 Sensor Reference Voltage Circuit Open Bank 2 Sensor 1

What does this mean?

What are the Possible Causes of the DTC P2247 Honda?

Faulty Front Oxygen Sensor Bank 2
Front Oxygen Sensor Bank 2 harness is open or shorted
Front Oxygen Sensor Bank 2 circuit poor electrical connection

How to Fix the DTC P2247 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 P2247 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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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 P2247 Honda Code

1. What does the OBDII code P2247 Honda mean?

The OBDII code P2247 in a Honda indicates an issue with the O2 Sensor Reference Voltage Circuit Open on Bank 2 Sensor 1.

2. What are the common symptoms of O2 Sensor Reference Voltage Circuit Open Bank 2 Sensor 1 issue?

Common symptoms include poor fuel economy, rough idling, engine misfires, and the illumination of the Check Engine Light.

3. What could cause the O2 Sensor Reference Voltage Circuit Open Bank 2 Sensor 1 code in a Honda?

Possible causes include a faulty O2 sensor, damaged wiring or connectors, exhaust leaks, or issues with the engine control module (ECM).

4. How can I diagnose the O2 Sensor Reference Voltage Circuit Open Bank 2 Sensor 1 problem in my Honda?

Diagnosis typically involves using an OBDII scanner to retrieve the specific trouble code, visually inspecting the sensor and its connections, and testing the sensor's voltage output.

5. Can I still drive my Honda with the P2247 code present?

It is not recommended to drive your vehicle with the P2247 code active, as it can lead to decreased fuel efficiency and potential engine damage over time.

6. Is it possible to repair the O2 Sensor Reference Voltage Circuit Open Bank 2 Sensor 1 issue myself?

While some DIY enthusiasts may be able to address this issue by replacing the O2 sensor or repairing wiring, it is recommended to consult a professional mechanic for proper diagnosis and repair.

7. How much does it cost to fix the O2 Sensor Reference Voltage Circuit Open Bank 2 Sensor 1 problem in a Honda?

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.

8. Will resetting the Check Engine Light make the P2247 code disappear?

Resetting the Check Engine Light may temporarily turn it off, but if the underlying issue causing the P2247 code is not addressed, the light will likely come back on.

9. Can a bad O2 sensor cause other problems in my Honda?

Yes, a faulty O2 sensor can lead to poor engine performance, decreased fuel efficiency, and increased emissions, which can potentially impact other components of your vehicle.

10. How often should I replace the O2 sensors in my Honda?

O2 sensors typically last around 60,000 to 90,000 miles, but it's always a good idea to follow the manufacturer's recommendations and have them inspected regularly during routine maintenance.