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

Quick Answer

The P2247 diagnostic trouble code (DTC) for Dodge vehicles indicates a problem with the O2 sensor reference voltage circuit for Bank 2 Sensor 1. Common causes include Faulty O2 Sensor: The O2 sensor itself may be defective or damaged, causing the reference voltage circuit to be open, Wiring Issues: Corrosion, damage, or loose connections in the wiring harness can interrupt the flow of voltage to the O2 sensor, ECM Malfunction: A problem with the engine control module (ECM) could prevent it from sending the proper voltage to the O2 sensor. 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 Dodge indicates O2 Sensor Reference Voltage Circuit Open Bank 2 Sensor 1.
Common causes
Common causes include Faulty O2 Sensor: The O2 sensor itself may be defective or damaged, causing the reference voltage circuit to be open, Wiring Issues: Corrosion, damage, or loose connections in the wiring harness can interrupt the flow of voltage to the O2 sensor, ECM Malfunction: A problem with the engine control module (ECM) could prevent it from sending the proper voltage to the O2 sensor.
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 09, 2024
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Code P2247 Dodge Description

The P2247 diagnostic trouble code (DTC) for Dodge vehicles indicates a problem with the O2 sensor reference voltage circuit for Bank 2 Sensor 1. This sensor is responsible for measuring the oxygen content in the exhaust gases and sending this information to the engine control module (ECM) for fuel mixture adjustments. The reference voltage circuit provides a stable electrical signal to the O2 sensor, allowing it to accurately measure the oxygen levels in the exhaust.

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

Common Causes of P2247 Dodge

  1. Faulty O2 Sensor: The O2 sensor itself may be defective or damaged, causing the reference voltage circuit to be open.
  2. Wiring Issues: Corrosion, damage, or loose connections in the wiring harness can interrupt the flow of voltage to the O2 sensor.
  3. ECM Malfunction: A problem with the engine control module (ECM) could prevent it from sending the proper voltage to the O2 sensor.
  4. Exhaust Leak: A leak in the exhaust system near the O2 sensor can affect its readings and trigger the P2247 code.
  5. Sensor Placement: If the O2 sensor is incorrectly installed or positioned, it may not receive the proper voltage signal.

Symptoms of P2247 Dodge

  1. Check Engine Light: The most common symptom associated with the P2247 code is the illumination of the check engine light on the dashboard.
  2. Poor Fuel Economy: A faulty O2 sensor can cause the engine to run rich or lean, resulting in decreased fuel efficiency.
  3. Rough Idle: The engine may idle roughly or inconsistently due to inaccurate air-fuel mixture adjustments.
  4. Decreased Power: The vehicle may experience a loss of power or performance due to improper fuel mixture.
  5. Increased Emissions: A malfunctioning O2 sensor can lead to higher emissions levels, potentially causing the vehicle to fail emissions testing.

How to Fix P2247 Dodge

  1. Diagnose the Issue: Use an OBD-II scanner to retrieve the P2247 code and perform a visual inspection of the O2 sensor and related wiring.
  2. Test O2 Sensor: Check the O2 sensor's resistance and voltage output to determine if it is functioning correctly.
  3. Inspect Wiring: Inspect the wiring harness for damage, corrosion, or loose connections. Repair or replace any faulty wiring.
  4. Check ECM: Test the engine control module to ensure it is sending the correct voltage signal to the O2 sensor.
  5. Replace O2 Sensor: If the O2 sensor is faulty, replace it with a new sensor that meets the manufacturer's specifications.

Cost to Fix P2247 Dodge

The typical repair costs for addressing a P2247 code on a Dodge vehicle can range from $200 to $500, including the cost of parts and labor. This estimate may vary depending on the specific model and year of the vehicle, as well as the location and labor rates of the auto repair shop. It's recommended to consult with a professional mechanic for a more accurate cost estimate based on your particular circumstances. Keep in mind that additional diagnostic time may be required to pinpoint the exact cause of the issue, which can impact the overall cost of 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 P2247 Dodge Code

What does OBDII code P2247 mean for a Dodge vehicle?

Code P2247 indicates an open circuit in the O2 sensor reference voltage for Bank 2 Sensor 1, meaning the ECM is not receiving the correct signal from the oxygen sensor.

What are common symptoms associated with code P2247?

Symptoms may include the check engine light turning on, poor fuel efficiency, rough idling, engine misfires, and reduced engine performance.

What causes code P2247 to appear on a Dodge vehicle?

Possible causes include a damaged oxygen sensor, broken wiring or connectors in the reference voltage circuit, a faulty ECM, or corrosion in the electrical connections.

How do you diagnose code P2247 on a Dodge?

Diagnosing involves inspecting the oxygen sensor and wiring for damage, checking for loose or corroded connections, and using a multimeter to test the reference voltage circuit.

Can I drive my Dodge with code P2247?

Driving with code P2247 is not recommended as it can lead to poor engine performance, higher emissions, and potential damage to other engine components.

How do you fix code P2247 on a Dodge vehicle?

Repairs may include replacing the oxygen sensor, repairing or replacing damaged wires or connectors, cleaning corrosion, or, in rare cases, replacing the ECM.

How much does it cost to repair code P2247?

Repair costs can vary but typically range from $150 to $400 depending on whether the oxygen sensor or wiring needs replacement.

Is replacing the oxygen sensor always necessary for code P2247?

Not always. If the issue lies in the wiring or connectors rather than the sensor itself, replacing the sensor may not resolve the issue.

What tools are needed to fix code P2247?

Common tools include an OBDII scanner, multimeter, basic hand tools, and possibly wire repair kits.

How do I prevent code P2247 from recurring?

Regular maintenance, checking for damaged or corroded wiring, and promptly addressing check engine light warnings can help prevent this code from recurring.

Discuss the causes and fixes for P2247 Dodge OBDII Code

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