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Engine-Codes – Honda – P0137 2009 Honda Accord

P0137 2009 Honda Accord Code - O2 Sensor Circuit Low Voltage Bank 1 Sensor 2

Quick Answer

The P0137 code for a 2009 Honda Accord indicates a problem with the Oxygen (O2) sensor circuit for Bank 1 Sensor 2, specifically reporting low voltage. Common causes include Faulty O2 sensor, Damaged wiring or connectors in the sensor circuit, Exhaust leak near the 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
P0137 2009 Honda Accord indicates O2 Sensor Circuit Low Voltage Bank 1 Sensor 2.
Common causes
Common causes include Faulty O2 sensor, Damaged wiring or connectors in the sensor circuit, Exhaust leak near the 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 12, 2024
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Code P0137 2009 Honda Accord Description

The P0137 code for a 2009 Honda Accord indicates a problem with the Oxygen (O2) sensor circuit for Bank 1 Sensor 2, specifically reporting low voltage. This sensor is responsible for monitoring the oxygen levels in the exhaust gases after they have passed through the catalytic converter. The data collected by this sensor is used by the engine control module (ECM) to adjust the air-fuel mixture for optimal combustion.

OBDII Code P0137 2009 Honda Accord - O2 Sensor Circuit Low Voltage Bank 1 Sensor 2
P0137 2009 Honda Accord Code - O2 Sensor Circuit Low Voltage Bank 1 Sensor 2

Common Causes of P0137 2009 Honda Accord

  1. Faulty O2 sensor
  2. Damaged wiring or connectors in the sensor circuit
  3. Exhaust leak near the sensor
  4. ECM malfunction

Symptoms of P0137 2009 Honda Accord

  1. Reduced fuel efficiency
  2. Rough idling
  3. Hesitation during acceleration
  4. Engine stalling

How to Fix P0137 2009 Honda Accord

  1. Begin by inspecting the O2 sensor and its wiring for any visible damage or corrosion. Replace the sensor if necessary.
  2. Check the connectors in the sensor circuit for proper connection and corrosion. Repair or replace as needed.
  3. Perform a smoke test to detect any exhaust leaks near the sensor. Repair leaks if found.
  4. Use a scan tool to monitor the O2 sensor's voltage output while the engine is running to ensure it is within the expected range.
  5. If the issue persists, further diagnostics may be needed to check for ECM malfunctions or other underlying issues.

Cost to Fix P0137 2009 Honda Accord

The cost of repairing a P0137 code on a 2009 Honda Accord can vary depending on the specific cause of the issue. In general, replacing an O2 sensor can cost between $100 to $200 for the part alone. Labor costs can range from $50 to $100 per hour, with the total repair time typically taking about 1-2 hours. This puts the total repair cost in the range of $150 to $400. It's recommended to consult with a local auto repair shop for a more accurate estimate based on your location and vehicle specifics.

What does this mean?

Tech Notes for P0137 2009 Honda Accord

Replacing the rear O2 Sensor bank 1 sensor 2 usually takes care of the problem.

When is the Code Detected?

The P0137 code is set when the Engine Control Module (ECM) detects that the rear O2 sensor signal voltage remains excessively low for an extended period of time.

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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 P0137 2009 Honda Accord Code

1. What does the OBDII code P0137 in a 2009 Honda Accord mean?

The code P0137 indicates a low voltage condition in the O2 sensor circuit of Bank 1 Sensor 2, which is the downstream oxygen sensor after the catalytic converter.

2. What are the common symptoms of a P0137 code in a 2009 Honda Accord?

Common symptoms of a P0137 code include poor fuel economy, rough idling, engine hesitation, and an illuminated check engine light on the dashboard.

3. What are the possible causes of a P0137 code in a 2009 Honda Accord?

Potential causes of a P0137 code include a faulty oxygen sensor, damaged wiring or connectors in the O2 sensor circuit, exhaust leaks near the sensor, or a malfunctioning engine control module (ECM).

4. How do I diagnose a P0137 code in a 2009 Honda Accord?

Diagnosing a P0137 code involves using an OBDII scanner to retrieve the code, checking the wiring and connectors for damage, inspecting for exhaust leaks, and testing the oxygen sensor's voltage output.

5. Can I drive my 2009 Honda Accord with a P0137 code?

It is generally safe to drive your vehicle with a P0137 code, but it is recommended to address the issue promptly to prevent potential damage to the catalytic converter and ensure optimal engine performance.

6. How can I repair a P0137 code in my 2009 Honda Accord?

Repairing a P0137 code may involve replacing the Bank 1 Sensor 2 oxygen sensor, repairing or replacing damaged wiring or connectors, fixing any exhaust leaks, or resetting the ECM after the issue is resolved.

7. Is it necessary to reset the check engine light after fixing a P0137 code in a 2009 Honda Accord?

Yes, it is recommended to reset the check engine light using an OBDII scanner after repairing a P0137 code to clear the stored error code and ensure proper monitoring of the vehicle's systems.

8. How much does it cost to repair a P0137 code in a 2009 Honda Accord?

The cost of repairing a P0137 code can vary depending on the root cause of the issue. Replacing the oxygen sensor can range from $100 to $300, while addressing wiring or connector issues may require additional labor costs.

9. Can a P0137 code in a 2009 Honda Accord cause emission test failures?

Yes, a P0137 code can cause emission test failures due to improper oxygen sensor functionality, which can lead to increased emissions and reduced catalytic converter efficiency. It is advisable to address the issue before undergoing an emissions test.

10. How often does a P0137 code occur in a 2009 Honda Accord?

The frequency of a P0137 code occurrence can vary depending on various factors such as driving conditions, maintenance history, and vehicle age. Regular maintenance and prompt addressing of related issues can help reduce the likelihood of encountering this code.

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