Engine-CodesAcura – P2245 Acura

P2245 Acura Code - O2 Sensor Reference Voltage Circuit Low Bank 1 Sensor 1

Quick Answer

The O2 Sensor Reference Voltage Circuit Low Bank 1 Sensor 1 diagnostic trouble code (DTC) P2245 in Acura vehicles indicates that there is a problem with the reference voltage circuit for the oxygen sensor in bank 1, sensor 1. Common causes include Faulty oxygen sensor, Damaged wiring or connectors in the sensor circuit, 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
P2245 Acura indicates O2 Sensor Reference Voltage Circuit Low Bank 1 Sensor 1.
Common causes
Common causes include Faulty oxygen sensor, Damaged wiring or connectors in the sensor circuit, 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.
Table of contents Created and updated by William Orellana on Sep 09, 2024
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Code P2245 Acura Description

The O2 Sensor Reference Voltage Circuit Low Bank 1 Sensor 1 diagnostic trouble code (DTC) P2245 in Acura vehicles indicates that there is a problem with the reference voltage circuit for the oxygen sensor in bank 1, sensor 1. This sensor is responsible for monitoring the oxygen levels in the exhaust gases and providing feedback to the engine control module (ECM) to adjust the air-fuel mixture for optimal combustion.

OBDII Code P2245 Acura - O2 Sensor Reference Voltage Circuit Low Bank 1 Sensor 1
P2245 Acura Code - O2 Sensor Reference Voltage Circuit Low Bank 1 Sensor 1

Common Causes of P2245 Acura

  1. Faulty oxygen sensor
  2. Damaged wiring or connectors in the sensor circuit
  3. Malfunctioning ECM
  4. Issues with the vehicle's power supply or ground connections

Symptoms of P2245 Acura

  1. Decreased fuel efficiency
  2. Engine hesitation or misfiring
  3. Rough idling
  4. Increased emissions
  5. Engine stalling

How to Fix P2245 Acura

  1. Begin by conducting a visual inspection of the oxygen sensor and its wiring harness to check for any visible damage or corrosion.
  2. Use a multimeter to test the reference voltage being supplied to the oxygen sensor and compare it to the manufacturer's specifications.
  3. Test the oxygen sensor itself by checking its resistance and response time to ensure it is functioning properly.
  4. If the oxygen sensor or wiring is found to be faulty, replace the sensor and repair or replace any damaged wiring or connectors.
  5. Clear the DTC using a scan tool and test drive the vehicle to verify that the issue has been resolved.

Cost to Fix P2245 Acura

The typical repair costs for addressing a P2245 code in an Acura vehicle can range from $200 to $500, including parts and labor. However, it is important to note that the specific diagnosis time and labor rates at auto repair shops can vary significantly based on factors such as location, vehicle make and model, and engine type. Most auto repair shops charge between $80 and $150 per hour for labor, but rates may be higher at dealerships or in metropolitan areas. It is advisable to obtain a detailed estimate from a trusted auto repair shop to determine the exact cost of resolving this issue.

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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 P2245 Acura Code

1. What are the common symptoms of OBDII code P2245 in an Acura?

- Common symptoms include poor fuel efficiency, rough idling, and a noticeable decrease in engine performance.

2. What causes the O2 Sensor Reference Voltage Circuit Low Bank 1 Sensor 1 code in an Acura?

- The code is typically triggered by a faulty oxygen (O2) sensor, damaged wiring or connectors, or a malfunctioning powertrain control module (PCM).

3. How serious is the P2245 code in an Acura?

- While the vehicle may still be operable with this code, it is important to address it promptly to prevent potential damage to the catalytic converter and other engine components.

4. Can I continue driving my Acura with the P2245 code present?

- It is not recommended to continue driving the vehicle with this code active, as it can lead to decreased fuel efficiency and potential long-term damage.

5. How can I diagnose the O2 Sensor Reference Voltage Circuit Low Bank 1 Sensor 1 issue in my Acura?

- Diagnosis typically involves using an OBDII scanner to read the fault code, checking the wiring and connectors for damage, and testing the O2 sensor's functionality.

6. What are some repair tips for fixing the P2245 code in an Acura?

- Repair tips include replacing the faulty O2 sensor, repairing or replacing damaged wiring or connectors, and resetting the fault code with an OBDII scanner after making repairs.

7. How much does it cost to repair the O2 Sensor Reference Voltage Circuit Low Bank 1 Sensor 1 code in an Acura?

- Repair costs can vary depending on the exact cause of the issue, but typically range from $200 to $500 for parts and labor.

8. Can I reset the P2245 code in my Acura without making any repairs?

- While you can clear the code with an OBDII scanner, it is important to address the underlying issue to prevent the code from reoccurring.

9. How long does it take to repair the O2 Sensor Reference Voltage Circuit Low Bank 1 Sensor 1 code in an Acura?

- The repair time can vary depending on the extent of the issue, but typically takes 1-2 hours for a professional mechanic to diagnose and fix the problem.

10. Will the P2245 code cause my Acura to fail an emissions test?

- Yes, the presence of this code may cause your Acura to fail an emissions test, as it indicates an issue with the O2 sensor and emissions control system.

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