P0137 Infiniti Code - Heated Oxygen Sensor Circuit Low Voltage Bank 1 Sensor 2
Quick Answer
The P0137 code for Infiniti vehicles indicates a problem with the Heated Oxygen Sensor (HO2S) circuit on Bank 1 Sensor 2. Common causes include Faulty Oxygen Sensor: The most common cause of the P0137 code is a malfunctioning Bank 1 Sensor 2 HO2S, Wiring Issues: Corrosion, damage, or poor connections in the wiring harness between the sensor and the ECM can lead to low voltage readings, Exhaust Leaks: Leaks in the exhaust system near the sensor can introduce false oxygen readings, triggering 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 Infiniti indicates Heated Oxygen Sensor Circuit Low Voltage Bank 1 Sensor 2.
- Common causes
- Common causes include Faulty Oxygen Sensor: The most common cause of the P0137 code is a malfunctioning Bank 1 Sensor 2 HO2S, Wiring Issues: Corrosion, damage, or poor connections in the wiring harness between the sensor and the ECM can lead to low voltage readings, Exhaust Leaks: Leaks in the exhaust system near the sensor can introduce false oxygen readings, triggering 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 Infiniti Description
The P0137 code for Infiniti vehicles indicates a problem with the Heated Oxygen Sensor (HO2S) circuit on Bank 1 Sensor 2. This sensor is responsible for monitoring the oxygen levels in the exhaust gases after they have passed through the catalytic converter. The purpose of this sensor is to ensure that the catalytic converter is functioning properly and to provide feedback to the engine control module (ECM) for optimal fuel efficiency and emissions control.
Common Causes of P0137 Infiniti
- Faulty Oxygen Sensor: The most common cause of the P0137 code is a malfunctioning Bank 1 Sensor 2 HO2S.
- Wiring Issues: Corrosion, damage, or poor connections in the wiring harness between the sensor and the ECM can lead to low voltage readings.
- Exhaust Leaks: Leaks in the exhaust system near the sensor can introduce false oxygen readings, triggering the P0137 code.
- ECM Malfunction: A problem with the engine control module's ability to interpret sensor signals can also cause this code to appear.
Symptoms of P0137 Infiniti
- Check Engine Light: The most common symptom associated with the P0137 code is the illumination of the check engine light on the vehicle's dashboard.
- Poor Fuel Economy: A malfunctioning HO2S can lead to incorrect fuel mixture adjustments, resulting in decreased fuel efficiency.
- Rough Idle: The engine may experience rough idling or hesitation when the HO2S is not functioning correctly.
- Failed Emissions Test: If the HO2S is not providing accurate readings, the vehicle may fail emissions tests due to increased emissions levels.
How to Fix P0137 Infiniti
- Diagnose the Issue: Use a scan tool to retrieve the specific code and perform a thorough inspection of the oxygen sensor, wiring, and connections.
- Replace Oxygen Sensor: If the sensor is faulty, replace Bank 1 Sensor 2 with a new, high-quality oxygen sensor.
- Repair Wiring: Repair or replace any damaged wiring or connectors in the sensor circuit to ensure proper signal transmission.
- Clear Codes: After completing the repair, clear the diagnostic trouble codes from the ECM memory and recheck for any recurring issues.
- Test Drive: Take the vehicle for a test drive to ensure that the check engine light does not reappear and that the vehicle's performance has been restored.
Cost to Fix P0137 Infiniti
The cost of repairing a P0137 code on an Infiniti vehicle can vary depending on the specific model, the location of the repair shop, and the cost of parts and labor. On average, replacing a heated oxygen sensor can range from $200 to $400, including parts and labor. Additional costs may apply if wiring repairs or ECM diagnostics are necessary. It's recommended to consult with a certified mechanic or repair shop to get an accurate estimate based on your vehicle's specific needs and location. Labor rates at auto repair shops typically range from $80 to $150 per hour.
Tech Notes for P0137 Infiniti
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Frequently Asked Questions about P0137 Infiniti Code
1. What are the common symptoms of OBDII code P0137 in an Infiniti?
- Common symptoms include poor fuel economy, rough idling, engine misfires, and the illumination of the Check Engine Light.
2. What does "Heated Oxygen Sensor Circuit Low Voltage Bank 1 Sensor 2" mean in relation to code P0137 in an Infiniti?
- This indicates that the oxygen sensor downstream of the catalytic converter in bank 1 is not operating properly due to low voltage.
3. What are some possible causes of code P0137 in an Infiniti?
- Potential causes include a faulty oxygen sensor, damaged wiring or connectors, exhaust leaks, fuel system issues, or a malfunctioning engine control module.
4. How can I diagnose the cause of OBDII code P0137 in my Infiniti?
- Diagnosing the issue may involve using a scan tool to monitor sensor data, conducting a visual inspection of the sensor and its wiring, and performing tests to check for proper voltage levels.
5. Can I continue driving my Infiniti with OBDII code P0137 present?
- It is generally not recommended to drive with this code active, as it can lead to decreased fuel efficiency and potential damage to the catalytic converter over time.
6. How can I repair OBDII code P0137 in my Infiniti?
- Repair options may include replacing the oxygen sensor, repairing damaged wiring, fixing exhaust leaks, addressing fuel system issues, or reprogramming the engine control module.
7. Are there any DIY tips for resolving code P0137 in an Infiniti?
- DIY enthusiasts can start by checking the sensor's wiring for damage, ensuring proper sensor connections, and performing a visual inspection of the exhaust system for leaks.
8. How much does it typically cost to fix OBDII code P0137 in an Infiniti?
- The cost of repairs can vary depending on the exact cause of the issue, but it may range from $100 for a DIY repair to $300-$500 at a repair shop for parts and labor.
9. Will resetting the Check Engine Light make OBDII code P0137 go away in my Infiniti?
- Resetting the light may temporarily clear the code, but if the underlying issue is not fixed, the code is likely to return after driving a certain distance.
10. How important is it to address OBDII code P0137 promptly in an Infiniti?
- It is important to address this code promptly to prevent potential damage to the catalytic converter and ensure optimal engine performance and fuel efficiency.
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