AutoCodes – Hyundai – P2246 Hyundai

P2246 Hyundai 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 Hyundai 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 1,630
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Jun 14, 2020
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Code P2246 Hyundai 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 Hyundai - O2 Sensor Reference Voltage Circuit High Bank 1 Sensor 1 - AutoCodes.com
P2246 Hyundai Code - O2 Sensor Reference Voltage Circuit High Bank 1 Sensor 1

What are the Possible Causes of the DTC P2246 Hyundai?

  • 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 Hyundai?

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 Hyundai 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 P2246 Hyundai code?

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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 Hyundai Code

1. What does the OBDII code P2246 mean for a Hyundai?

P2246 indicates a problem with the oxygen (O2) sensor reference voltage circuit being too high for Bank 1 Sensor 1.

2. What are the common symptoms of a P2246 code on a Hyundai?

Symptoms include poor fuel efficiency, rough idling, hesitation during acceleration, and the check engine light turning on.

3. What causes the P2246 code to appear on a Hyundai?

Common causes include a faulty O2 sensor, damaged wiring or connectors in the sensor circuit, or a malfunctioning engine control module (ECM).

4. Which sensor is affected by the P2246 code?

The code specifically refers to Bank 1 Sensor 1, which is the upstream O2 sensor located before the catalytic converter on the side of the engine with cylinder 1.

5. Can I drive my Hyundai with a P2246 code?

Driving with a P2246 code is not recommended as it can lead to increased emissions, poor performance, and potential damage to the catalytic converter.

6. How do I fix the P2246 code on my Hyundai?

Repairs may involve replacing the O2 sensor, repairing or replacing damaged wiring or connectors, or reprogramming or replacing the ECM if necessary.

7. How can I diagnose the P2246 code on a Hyundai?

Use an OBDII scanner to confirm the code, visually inspect the wiring and connectors for damage, and test the O2 sensor and reference voltage using a multimeter.

8. What is the reference voltage for the O2 sensor in a Hyundai?

The reference voltage for the O2 sensor is typically 5 volts, but you should consult your vehicle's service manual for exact specifications.

9. How much does it cost to fix a P2246 code on a Hyundai?

Repairs can cost between $150 and $400, depending on whether you're replacing the O2 sensor or addressing wiring and ECM issues.

10. Can a dirty air filter cause the P2246 code on a Hyundai?

A dirty air filter is unlikely to cause a P2246 code, as the issue is specific to the O2 sensor's reference voltage circuit.

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