AutoCodes – Honda – P0137 2009 Honda Accord

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

Quick Answer

The heated oxygen sensor 2 (HO2S), after three way catalyst (manifold), monitors the oxygen level in the exhaust gas on each bank. Common causes include Faulty Rear Heated Oxygen Sensor Bank 1, Rear Heated Oxygen Sensor Bank 1 harness is open or shorted, Rear Heated Oxygen Sensor Bank 1 circuit poor electrical connection. 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 Rear Heated Oxygen Sensor Bank 1, Rear Heated Oxygen Sensor Bank 1 harness is open or shorted, Rear Heated Oxygen Sensor Bank 1 circuit poor electrical connection.
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.

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Code Popularity 14,482

How popular is this code, among other codes? Low

Repair Importance Level

Moderate (Service soon) (2 / 3)

Repair Difficulty Level

Intermediate (2 / 3)

What is this?

Table of contents Created and updated by William Orellana on Dec 14, 2022

Description
Step-by-Step Diagnostic Guide
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code P0137 2009 Honda Accord Description

The heated oxygen sensor 2 (HO2S), after three way catalyst (manifold), monitors the oxygen level in the exhaust gas on each bank. For optimum catalyst operation, the air fuel mixture (air-fuel ratio) must be maintained near the ideal stoichiometric ratio. The HO2S output voltage changes suddenly in the vicinity of the stoichiometric ratio. The Engine Control Module (ECM) adjusts the fuel injection time so that the air-fuel ratio is nearly stoichiometric. The HO2S generates a voltage between 0.1 and 0.9 V in response to oxygen in the exhaust gas. If the oxygen in the exhaust gas increases, the air-fuel ratio becomes Lean. The ECM interprets Lean when the HO2S voltage is below 0.45 V. If the oxygen in the exhaust gas decreases, the air-fuel ratio becomes Rich. The ECM interprets Rich when the HO2S voltage is above 0.45 V.

OBDII Code P0137 2009 Honda Accord - O2 Sensor Circuit Low Voltage Bank 1 Sensor 2 - AutoCodes.com — P0137 2009 Honda Accord Code - O2 Sensor Circuit Low Voltage Bank 1 Sensor 2

What does this mean?

What are the Possible Causes of the DTC P0137 2009 Honda Accord?

Faulty Rear Heated Oxygen Sensor Bank 1
Rear Heated Oxygen Sensor Bank 1 harness is open or shorted
Rear Heated Oxygen Sensor Bank 1 circuit poor electrical connection
Inappropriate fuel pressure
Faulty fuel injectors
Intake air leaks may be faulty
Exhaust gas leaks

How to Fix the DTC P0137 2009 Honda Accord?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What does this mean?

Code Tech Notes

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

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0137 2009 Honda Accord code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

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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.