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Engine-Codes – Honda – P0137 2008 Honda Accord

P0137 2008 Honda Accord Code - O2 Sensor Circuit Low Voltage Bank 1 Sensor 2

Quick Answer

The P0137 code for a 2008 Honda Accord indicates a problem with the O2 sensor circuit for Bank 1 Sensor 2, specifically that the voltage is lower than expected. Common causes include Faulty O2 sensor, Damaged wiring or connectors in the sensor circuit, Vacuum leak. 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 2008 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, Vacuum leak.
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 10, 2024
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Code P0137 2008 Honda Accord Description

The P0137 code for a 2008 Honda Accord indicates a problem with the O2 sensor circuit for Bank 1 Sensor 2, specifically that the voltage is lower than expected. The O2 sensor plays a crucial role in monitoring the oxygen levels in the exhaust gases and helps the engine control module (ECM) adjust the air/fuel mixture for optimal combustion. Bank 1 Sensor 2 refers to the downstream O2 sensor located after the catalytic converter.

OBDII Code P0137 2008 Honda Accord - O2 Sensor Circuit Low Voltage Bank 1 Sensor 2
P0137 2008 Honda Accord Code - O2 Sensor Circuit Low Voltage Bank 1 Sensor 2

Common Causes of P0137 2008 Honda Accord

  1. Faulty O2 sensor
  2. Damaged wiring or connectors in the sensor circuit
  3. Vacuum leak
  4. Exhaust leaks
  5. Malfunctioning ECM

Symptoms of P0137 2008 Honda Accord

  1. Check Engine Light is illuminated
  2. Decreased fuel efficiency
  3. Rough idling or stalling
  4. Hesitation or jerking during acceleration
  5. Increased emissions

How to Fix P0137 2008 Honda Accord

  1. Use an OBD-II scanner to confirm the P0137 code and identify the specific O2 sensor causing the issue.
  2. Inspect the wiring and connectors for damage or corrosion, and repair or replace as necessary.
  3. Test the O2 sensor using a multimeter to check for proper voltage output and replace if it is out of spec.
  4. Check for vacuum leaks or exhaust leaks that could be affecting the sensor's readings and repair as needed.
  5. Clear the code from the ECM's memory after making repairs and test drive the vehicle to ensure the issue has been resolved.

Cost to Fix P0137 2008 Honda Accord

The cost of repairing a P0137 code on a 2008 Honda Accord can vary depending on the specific cause of the issue. On average, replacing an O2 sensor can cost between $100 and $300, while repairing wiring or connectors may range from $50 to $150. Labor costs can add an additional $80 to $150 per hour, with the total repair bill typically falling between $200 and $500. It's important to consult with a trusted mechanic to get an accurate estimate based on your vehicle's specific needs and location.

What does this mean?

Tech Notes for P0137 2008 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 2008 Honda Accord Code

1. What are the common symptoms of OBDII code P0137 on a 2008 Honda Accord?

The common symptoms of code P0137 include poor fuel economy, rough idling, hesitation during acceleration, and the illumination of the Check Engine Light.

2. What does the OBDII code P0137 mean on a 2008 Honda Accord?

OBDII code P0137 refers to the O2 Sensor Circuit Low Voltage Bank 1 Sensor 2. It indicates that the oxygen sensor downstream of the catalytic converter is detecting a low voltage condition.

3. What are the possible causes of OBDII code P0137 on a 2008 Honda Accord?

Possible causes of code P0137 include a faulty oxygen sensor, wiring issues in the O2 sensor circuit, exhaust leaks, a damaged catalytic converter, or a malfunctioning engine control module (ECM).

4. How can I diagnose OBDII code P0137 on my 2008 Honda Accord?

Diagnosing code P0137 involves using an OBDII scanner to read the code, inspecting the O2 sensor wiring and connections, checking for exhaust leaks, testing the oxygen sensor, and verifying the ECM operation.

5. Can I drive my 2008 Honda Accord with OBDII code P0137?

It is generally not recommended to drive your vehicle with code P0137 as it can lead to decreased fuel efficiency and potentially cause damage to the catalytic converter over time. It is best to address the issue promptly.

6. How can I repair OBDII code P0137 on my 2008 Honda Accord?

Repairing code P0137 may involve replacing the downstream O2 sensor, repairing any damaged wiring or connections, fixing exhaust leaks, replacing the catalytic converter if necessary, or reprogramming the ECM.

7. Will resetting the Check Engine Light clear OBDII code P0137 on a 2008 Honda Accord?

Resetting the Check Engine Light may temporarily clear the code, but if the underlying issue causing code P0137 is not addressed, the code is likely to reappear after some driving cycles.

8. Can a bad O2 sensor cause OBDII code P0137 on a 2008 Honda Accord?

Yes, a faulty downstream O2 sensor (Bank 1 Sensor 2) is a common cause of OBDII code P0137 on a 2008 Honda Accord. It is responsible for measuring the oxygen levels in the exhaust after the catalytic converter.

9. Is it possible to damage the engine by driving with OBDII code P0137 on a 2008 Honda Accord?

While driving with code P0137 may not immediately damage the engine, it can lead to reduced fuel efficiency and potentially harm the catalytic converter over time. It is best to address the issue promptly to prevent further damage.

10. How much does it cost to repair OBDII code P0137 on a 2008 Honda Accord?

The cost of repairing code P0137 can vary depending on the exact cause of the issue. Replacing the downstream O2 sensor can cost between $100 to $300, while more extensive repairs such as fixing exhaust leaks or replacing the catalytic converter can be more expensive.

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