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Engine-Codes – Generic – P2247

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

Quick Answer

The P2247 diagnostic trouble code indicates that there is an issue with the O2 sensor reference voltage circuit for bank 2 sensor 1. Common causes include Broken or damaged wiring harness, Faulty O2 sensor, Malfunctioning ECM. 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 indicates O2 Sensor Reference Voltage Circuit Open Bank 2 Sensor 1.
Common causes
Common causes include Broken or damaged wiring harness, Faulty O2 sensor, Malfunctioning ECM.
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 Sep 12, 2024
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Code P2247 Description

The P2247 diagnostic trouble code indicates that there is an issue with the O2 sensor reference voltage circuit for bank 2 sensor 1. The O2 sensor plays a crucial role in monitoring the amount of oxygen in the exhaust gases, providing feedback to the engine control module (ECM) to adjust the air-fuel mixture for optimal combustion.

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

Common Causes of P2247

  1. Broken or damaged wiring harness
  2. Faulty O2 sensor
  3. Malfunctioning ECM
  4. Corrosion or poor connections in the circuit
  5. Environmental damage (exposure to water, heat, or debris)

Symptoms of P2247

  1. Decreased fuel efficiency
  2. Rough idling or engine misfires
  3. Engine stalling
  4. Check Engine Light illuminated
  5. Failed emissions test

How to Fix P2247

  1. Begin by diagnosing the issue using a scan tool to confirm the P2247 code and identify the specific cause.
  2. Inspect the wiring harness for any breaks, damage, or corrosion. Repair or replace any faulty wiring.
  3. Test the O2 sensor using a multimeter to ensure it is functioning correctly. Replace the sensor if necessary.
  4. Check the ECM for any signs of malfunction and reprogram or replace it if needed.
  5. Clear the code and test drive the vehicle to ensure the issue has been resolved.

Cost to Fix P2247

The typical repair costs for addressing a P2247 code can range from $100 to $500, depending on the specific cause of the issue and the cost of parts. This estimate includes the cost of a new O2 sensor, wiring repairs, and labor charges. It is essential to consult with a professional mechanic to get an accurate quote based on your vehicle's make and model. Additionally, factors such as local labor rates and diagnostic time may influence the final cost.

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Code P2247 Information for Specific Makes

  • P2247 Acura — O2 Sensor Reference Voltage Circuit Open Bank 2 Sensor 1
  • P2247 BMW — Upstream Oxygen Sensor Open Circuit Monitoring Reference Voltage Failure Bank 2
  • P2247 Dodge — O2 Sensor Reference Voltage Circuit Open Bank 2 Sensor 1
  • P2247 Ford — O2 Sensor Reference Voltage Circuit Open Bank 2 Sensor 1
  • P2247 Honda — O2 Sensor Reference Voltage Circuit Open Bank 2 Sensor 1
  • P2247 Hyundai — O2 Sensor Reference Voltage Circuit Open Bank 2 Sensor 1
  • P2247 KIA — O2 Sensor Reference Voltage Circuit Open Bank 2 Sensor 1
  • P2247 Lincoln — O2 Sensor Reference Voltage Circuit Open Bank 2 Sensor 1
  • P2247 Mercury — O2 Sensor Reference Voltage Circuit Open Bank 2 Sensor 1
  • P2247 MINI — Upstream Oxygen Sensor Open Circuit Monitoring Reference Voltage Failure Bank 2
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.

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