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P2246 Hyundai Code - O2 Sensor Reference Voltage Circuit High Bank 1 Sensor 1

Quick Answer

The P2246 code for Hyundai vehicles indicates a problem with the O2 sensor reference voltage circuit being too high in Bank 1 Sensor 1. Common causes include Faulty O2 sensor, Wiring or connector issues in the O2 sensor circuit, ECM malfunction. 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 O2 sensor, Wiring or connector issues in the O2 sensor circuit, ECM malfunction.
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.
What is this?
Table of contents Created and updated by William Orellana on Aug 19, 2024
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Code P2246 Hyundai Description

The P2246 code for Hyundai vehicles indicates a problem with the O2 sensor reference voltage circuit being too high in Bank 1 Sensor 1. The O2 sensor plays a crucial role in monitoring the oxygen levels in the exhaust gases, helping the engine control module (ECM) adjust the air-fuel mixture for optimal performance and emissions. When the reference voltage circuit is too high, it can lead to inaccurate readings from the O2 sensor, impacting the engine's fuel efficiency, emissions, and overall performance.

OBDII Code P2246 Hyundai - O2 Sensor Reference Voltage Circuit High Bank 1 Sensor 1
P2246 Hyundai Code - O2 Sensor Reference Voltage Circuit High Bank 1 Sensor 1

Common Causes of P2246 Hyundai

  1. Faulty O2 sensor
  2. Wiring or connector issues in the O2 sensor circuit
  3. ECM malfunction
  4. Exhaust system leaks
  5. Engine coolant leaks

Symptoms of P2246 Hyundai

  1. Check engine light illuminated on the dashboard
  2. Decreased fuel efficiency
  3. Rough idling or stalling
  4. Engine misfires
  5. Increased emissions output

How to Fix P2246 Hyundai

  1. Use an OBD-II scanner to confirm the P2246 code and diagnose the specific issue with the O2 sensor reference voltage circuit.
  2. Inspect the wiring and connectors in the O2 sensor circuit for any damage or corrosion and repair or replace as necessary.
  3. Test the O2 sensor for proper function and replace if found to be faulty.
  4. Check for exhaust system leaks and repair any leaks that could be affecting the O2 sensor readings.
  5. Clear the trouble code from the ECM and perform a test drive to ensure the issue has been resolved.

Cost to Fix P2246 Hyundai

The cost of repairing a P2246 O2 Sensor Reference Voltage Circuit High Bank 1 Sensor 1 code can vary depending on the specific cause of the issue and the labor rates in your area. On average, you can expect to pay anywhere from $150 to $500 for parts and labor. Keep in mind that rates at dealerships or in metropolitan areas may be higher, while independent shops may offer more affordable options. It's recommended to get a few quotes from different auto repair shops to find the best price for the repair.

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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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