Engine-Codes.com
Engine-Codes – Ford – P2246 Ford

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

Quick Answer

The P2246 Ford code indicates a problem with the O2 sensor reference voltage circuit being too high in Bank 1 Sensor 1. Common causes include Faulty O2 Sensor: The O2 sensor itself may be malfunctioning and providing incorrect readings, Wiring Issues: A short circuit or open circuit in the wiring connected to the O2 sensor can disrupt the reference voltage circuit, Damaged Connector: A damaged or corroded connector can prevent proper communication between the O2 sensor and the 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
P2246 Ford indicates O2 Sensor Reference Voltage Circuit High Bank 1 Sensor 1.
Common causes
Common causes include Faulty O2 Sensor: The O2 sensor itself may be malfunctioning and providing incorrect readings, Wiring Issues: A short circuit or open circuit in the wiring connected to the O2 sensor can disrupt the reference voltage circuit, Damaged Connector: A damaged or corroded connector can prevent proper communication between the O2 sensor and the 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 09, 2024
💬 Need more help? Ask Auto Expert for instant answers — it's free!
AutoCodes App

Fix Your Car Smarter

Try the New AutoCodes App!

Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.

AutoCodes App on Google Play

Code P2246 Ford Description

The P2246 Ford code indicates a problem with the O2 sensor reference voltage circuit being too high in Bank 1 Sensor 1. The O2 sensor, also known as the oxygen sensor, plays a crucial role in monitoring the oxygen levels in the exhaust gases of the vehicle. This information is used by the engine control module (ECM) to adjust the air-fuel mixture for optimal combustion. The reference voltage circuit provides a stable voltage to the O2 sensor for accurate readings.

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

Common Causes of P2246 Ford

  1. Faulty O2 Sensor: The O2 sensor itself may be malfunctioning and providing incorrect readings.
  2. Wiring Issues: A short circuit or open circuit in the wiring connected to the O2 sensor can disrupt the reference voltage circuit.
  3. Damaged Connector: A damaged or corroded connector can prevent proper communication between the O2 sensor and the ECM.
  4. Malfunctioning ECM: In some cases, the ECM itself may be the source of the high reference voltage, requiring replacement or reprogramming.

Symptoms of P2246 Ford

  1. Check Engine Light: The most common symptom associated with this code is the illumination of the check engine light on the vehicle's dashboard.
  2. Reduced Fuel Efficiency: A malfunctioning O2 sensor can lead to poor fuel economy due to incorrect air-fuel mixture adjustments.
  3. Engine Misfires: Inaccurate readings from the O2 sensor can cause the engine to misfire, leading to rough idling or hesitation during acceleration.
  4. Increased Emissions: A faulty O2 sensor can result in higher emissions from the vehicle, potentially causing it to fail emissions tests.
  5. Reduced Engine Performance: The engine may lack power or responsiveness due to incorrect air-fuel mixture adjustments.

How to Fix P2246 Ford

  1. Diagnostic Scan: Use an OBD-II scanner to retrieve the specific trouble code and verify the issue with the O2 sensor reference voltage.
  2. Inspect Wiring and Connector: Check the wiring harness and connector for any damage, corrosion, or loose connections. Repair or replace as needed.
  3. Test O2 Sensor: Test the O2 sensor to determine if it is providing accurate readings. Replace the sensor if necessary.
  4. Reset ECM: Clear the trouble code and reset the ECM to see if the issue persists. This may require driving the vehicle for a certain distance to allow the ECM to relearn.
  5. Recheck and Test Drive: After repairs are made, recheck for the trouble code and take the vehicle for a test drive to ensure that the issue has been resolved.

Cost to Fix P2246 Ford

The typical repair costs for addressing a P2246 Ford code can range from $200 to $500, including parts and labor. The cost of an O2 sensor can vary depending on the vehicle make and model, with prices typically ranging from $50 to $200. Labor costs can also vary, with hourly rates typically falling between $80 and $150 at most auto repair shops. It's recommended to get a specific estimate from a local auto repair shop, as rates can differ based on location and other factors.

Need more information about the P2246 Ford code?

Need more information on how to fix the P2246 Ford code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P2246 Ford code diagnosed by a professional: Find a repair shop in your area

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 Ford Code

No Frequently Asked Questions about P2246 Ford Code found.

Discuss the causes and fixes for P2246 Ford OBDII Code

Submit a New Comment

Code P2246 Ford comments

No comments found for this page.