P0137 2021 Honda CR-V Code - Secondary Heated Oxygen Sensor 2 Circuit Low Voltage
Quick Answer
The P0137 diagnostic trouble code (DTC) on a 2021 Honda CR-V indicates an issue with the Secondary Heated Oxygen Sensor 2 (HO2S2) circuit registering a low voltage. Common causes include Faulty HO2S2 Sensor: The sensor itself may be malfunctioning, leading to inaccurate voltage readings, Wiring or Connector Issues: Damaged wiring or connectors in the sensor circuit can disrupt the signal between the sensor and ECM, Vacuum Leaks: Air leaks in the intake system can affect the oxygen sensor readings and cause the P0137 code. 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 2021 Honda CR-V indicates Secondary Heated Oxygen Sensor 2 Circuit Low Voltage.
- Common causes
- Common causes include Faulty HO2S2 Sensor: The sensor itself may be malfunctioning, leading to inaccurate voltage readings, Wiring or Connector Issues: Damaged wiring or connectors in the sensor circuit can disrupt the signal between the sensor and ECM, Vacuum Leaks: Air leaks in the intake system can affect the oxygen sensor readings and cause the P0137 code.
- 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 P0137 2021 Honda CR-V Description
The P0137 diagnostic trouble code (DTC) on a 2021 Honda CR-V indicates an issue with the Secondary Heated Oxygen Sensor 2 (HO2S2) circuit registering a low voltage. The HO2S2 is responsible for monitoring the oxygen levels in the exhaust gases after they have passed through the catalytic converter. This data is crucial for the engine control module (ECM) to adjust the air-fuel mixture for optimal combustion and emission control.
Common Causes of P0137 2021 Honda CR-V
- Faulty HO2S2 Sensor: The sensor itself may be malfunctioning, leading to inaccurate voltage readings.
- Wiring or Connector Issues: Damaged wiring or connectors in the sensor circuit can disrupt the signal between the sensor and ECM.
- Vacuum Leaks: Air leaks in the intake system can affect the oxygen sensor readings and cause the P0137 code.
- Exhaust Leaks: Leaks in the exhaust system can introduce additional oxygen into the exhaust gases, affecting sensor readings.
- Malfunctioning ECM: A problem with the engine control module can prevent proper communication with the oxygen sensor.
Symptoms of P0137 2021 Honda CR-V
- Check Engine Light: The most common symptom associated with a P0137 code is the illumination of the check engine light on the vehicle's dashboard.
- Reduced Fuel Efficiency: A malfunctioning oxygen sensor can lead to poor fuel efficiency as the engine may not be running at its optimal air-fuel ratio.
- Rough Idling: Inconsistent oxygen levels can cause the engine to run roughly at idle, leading to vibrations and instability.
- Hesitation or Stalling: Incorrect fuel mixture adjustments can result in hesitation or stalling during acceleration or deceleration.
How to Fix P0137 2021 Honda CR-V
- Diagnose the Issue: Use a scan tool to retrieve the trouble code and data from the oxygen sensor to pinpoint the exact cause of the low voltage reading.
- Inspect Wiring and Connectors: Check the wiring and connectors for any damage or corrosion and repair or replace as needed.
- Test the HO2S2 Sensor: Test the sensor's voltage output and response time to determine if it is functioning correctly.
- Check for Vacuum and Exhaust Leaks: Inspect the intake and exhaust systems for leaks and repair any issues found.
- Replace the HO2S2 Sensor: If the sensor is faulty and cannot be repaired, replace it with a new one to restore proper functionality.
Cost to Fix P0137 2021 Honda CR-V
The cost of repairing a P0137 code on a 2021 Honda CR-V can vary depending on the underlying cause of the issue. In general, replacing a faulty HO2S2 sensor can cost between $150 to $300 for the part alone. Labor costs can range from $80 to $150 per hour, and the total repair cost may be around $200 to $500, including parts and labor. Additional costs may apply if other components need replacement or if extensive diagnostics are required. It's recommended to consult with a qualified mechanic or auto repair shop for a more accurate cost estimate based on your specific situation.
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Frequently Asked Questions about P0137 2021 Honda CR-V Code
1. What does OBDII code P0137 mean on a 2021 Honda CR-V?
This code indicates an issue with the Secondary Heated Oxygen Sensor 2 Circuit, specifically low voltage.
2. What are the common symptoms of OBDII code P0137 in a 2021 Honda CR-V?
Common symptoms include poor fuel efficiency, rough idling, and the illumination of the check engine light.
3. What are the potential causes of OBDII code P0137 in a 2021 Honda CR-V?
Possible causes include a faulty oxygen sensor, damaged wiring or connectors, exhaust leaks, or issues with the engine control module.
4. How can I diagnose the OBDII code P0137 in my 2021 Honda CR-V?
Diagnosing this code typically involves using a scan tool to check for the specific fault code, inspecting the oxygen sensor and related components, and testing the sensor's voltage output.
5. Can I continue driving my 2021 Honda CR-V with OBDII code P0137?
It is not recommended to drive with this code as it can lead to reduced fuel efficiency and potential engine damage over time. It is best to address the issue promptly.
6. How can I repair OBDII code P0137 in my 2021 Honda CR-V?
Repairing this code may involve replacing the Secondary Heated Oxygen Sensor 2, repairing damaged wiring or connectors, fixing exhaust leaks, or addressing any issues with the engine control module.
7. Are there any DIY tips for fixing OBDII code P0137 in a 2021 Honda CR-V?
DIY tips may include checking and cleaning the oxygen sensor connections, inspecting the sensor for physical damage, and ensuring proper installation of any replacement parts.
8. How much does it cost to repair OBDII code P0137 in a 2021 Honda CR-V?
The cost of repairing this code can vary depending on the specific issue and whether you choose to do the repair yourself or take the vehicle to a mechanic. Costs may include parts and labor.
9. Will resetting the check engine light resolve OBDII code P0137 in my 2021 Honda CR-V?
Resetting the check engine light may temporarily turn it off, but it will not fix the underlying issue causing the code. It is important to diagnose and repair the problem to prevent it from recurring.
10. How often should I replace the oxygen sensors in my 2021 Honda CR-V to prevent OBDII code P0137?
Oxygen sensors typically have a lifespan of around 60,000 to 100,000 miles. It is recommended to follow the manufacturer's maintenance schedule and replace them as needed to prevent issues like code P0137.
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