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Engine-Codes – Generic – P2246

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

Quick Answer

The O2 Sensor Reference Voltage Circuit High Bank 1 Sensor 1 diagnostic trouble code (DTC) P2246 indicates that there is a high voltage reading in the reference voltage circuit of the oxygen sensor for Bank 1 Sensor 1. Common causes include Faulty oxygen sensor, Short circuit or open circuit in the reference voltage circuit, Corrosion or damage to sensor connectors or wiring. 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 indicates O2 Sensor Reference Voltage Circuit High Bank 1 Sensor 1.
Common causes
Common causes include Faulty oxygen sensor, Short circuit or open circuit in the reference voltage circuit, Corrosion or damage to sensor connectors or wiring.
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 08, 2024
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Code P2246 Description

The O2 Sensor Reference Voltage Circuit High Bank 1 Sensor 1 diagnostic trouble code (DTC) P2246 indicates that there is a high voltage reading in the reference voltage circuit of the oxygen sensor for Bank 1 Sensor 1. This sensor is located in the exhaust system before the catalytic converter and is responsible for measuring the oxygen content in the exhaust gases. The reference voltage circuit provides a stable voltage to the sensor for accurate readings.

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

Common Causes of P2246

  1. Faulty oxygen sensor
  2. Short circuit or open circuit in the reference voltage circuit
  3. Corrosion or damage to sensor connectors or wiring
  4. Issues with the ECM or power supply to the sensor
  5. Exhaust leaks near the oxygen sensor

Symptoms of P2246

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

How to Fix P2246

  1. Begin by diagnosing the issue using a scan tool to confirm the presence of DTC P2246 and inspecting the oxygen sensor and its wiring for any visible damage.
  2. Test the reference voltage circuit using a multimeter to check for the presence of high voltage.
  3. Replace the oxygen sensor if it is found to be faulty or damaged.
  4. Repair any wiring or connector issues in the reference voltage circuit.
  5. Clear the DTC and perform a test drive to ensure the issue has been resolved.

Cost to Fix P2246

The typical repair cost for addressing a P2246 DTC can range from $150 to $400, depending on the labor rates and the cost of the oxygen sensor. It's important to note that additional diagnostic time may be needed to pinpoint the exact cause of the issue, so the final cost may vary. As always, it's recommended to consult with a qualified mechanic or auto repair shop for an accurate estimate based on your specific vehicle make and model.

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Code P2246 Information for Specific Makes

  • P2246 Acura — O2 Sensor Reference Voltage Circuit High Bank 1 Sensor 1
  • P2246 Dodge — O2 Sensor Reference Voltage Circuit High Bank 1 Sensor 1
  • P2246 Ford — O2 Sensor Reference Voltage Circuit High Bank 1 Sensor 1
  • P2246 Honda — O2 Sensor Reference Voltage Circuit High Bank 1 Sensor 1
  • P2246 Hyundai — O2 Sensor Reference Voltage Circuit High Bank 1 Sensor 1
  • P2246 KIA — O2 Sensor Reference Voltage Circuit High Bank 1 Sensor 1
  • P2246 Lincoln — O2 Sensor Reference Voltage Circuit High Bank 1 Sensor 1
  • P2246 Mercury — O2 Sensor Reference Voltage Circuit High Bank 1 Sensor 1
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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