AutoCodes – Honda – P2246 Honda

P2246 Honda Code - O2 Sensor Reference Voltage Circuit High Bank 1 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 1, Front Oxygen Sensor Bank 1 harness is open or shorted, Front Oxygen Sensor Bank 1 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: P2246 Honda indicates O2 Sensor Reference Voltage Circuit High Bank 1 Sensor 1.
Common causes: Common causes include Faulty Front Oxygen Sensor Bank 1, Front Oxygen Sensor Bank 1 harness is open or shorted, Front Oxygen Sensor Bank 1 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 2,189

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 P2246 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 P2246 Honda - O2 Sensor Reference Voltage Circuit High Bank 1 Sensor 1 - AutoCodes.com — P2246 Honda Code - O2 Sensor Reference Voltage Circuit High Bank 1 Sensor 1

What does this mean?

What are the Possible Causes of the DTC P2246 Honda?

Faulty Front Oxygen Sensor Bank 1
Front Oxygen Sensor Bank 1 harness is open or shorted
Front Oxygen Sensor Bank 1 circuit poor electrical connection

How to Fix the DTC P2246 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 P2246 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 P2246 Honda Code

1. What does OBDII code P2246 mean on a Honda?

The code P2246 indicates a high reference voltage in the O2 sensor circuit of Bank 1 Sensor 1 in a Honda vehicle.

2. What are the common symptoms of OBDII code P2246 in a Honda?

Common symptoms of code P2246 may include poor fuel efficiency, rough idling, engine misfires, and the illumination of the Check Engine light.

3. What are the possible causes of OBDII code P2246 in a Honda?

Possible causes of code P2246 in a Honda include a faulty O2 sensor, damaged wiring or connectors in the O2 sensor circuit, or issues with the engine control module (ECM).

4. How can I diagnose OBDII code P2246 in a Honda?

Diagnosing code P2246 typically involves using an OBDII scanner to retrieve the code, inspecting the O2 sensor and its wiring for any visible damage, and testing the sensor's voltage output.

5. Can I still drive my Honda with OBDII code P2246?

It is not recommended to drive your Honda with an unresolved P2246 code, as it can lead to further engine issues and potential damage if left unattended.

6. How do I repair OBDII code P2246 in my Honda?

Repairing code P2246 may involve replacing the Bank 1 Sensor 1 O2 sensor, repairing or replacing damaged wiring or connectors, and clearing the code with an OBDII scanner.

7. Is it possible to reset OBDII code P2246 in a Honda without fixing the issue?

Resetting the code without addressing the underlying problem may temporarily turn off the Check Engine light, but the code is likely to reappear once the issue persists.

8. Can a DIY enthusiast fix OBDII code P2246 in a Honda?

While some experienced DIYers may be able to diagnose and replace the O2 sensor themselves, it is recommended to seek professional help for a proper diagnosis and repair of code P2246.

9. How much does it cost to fix OBDII code P2246 in a Honda?

The cost of fixing code P2246 in a Honda can vary depending on the underlying issue, but it may range from $100 to $300 for parts and labor at a repair shop.

10. How often does OBDII code P2246 occur in Honda vehicles?

OBDII code P2246 related to the O2 sensor reference voltage circuit high in Bank 1 Sensor 1 can occur in Honda vehicles due to various factors, including sensor wear and age, electrical issues, or ECM malfunctions.