P0139 Acura Code - Secondary Heated Oxygen Sensor 2 Slow Response
Quick Answer
The P0139 code for Acura vehicles indicates a problem with the Secondary Heated Oxygen Sensor 2, specifically a slow response from the sensor. Common causes include Faulty Secondary Heated Oxygen Sensor 2, Wiring or connector issues, Exhaust leaks 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
- P0139 Acura indicates Secondary Heated Oxygen Sensor 2 Slow Response.
- Common causes
- Common causes include Faulty Secondary Heated Oxygen Sensor 2, Wiring or connector issues, Exhaust leaks 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.
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Code P0139 Acura Description
The P0139 code for Acura vehicles indicates a problem with the Secondary Heated Oxygen Sensor 2, specifically a slow response from the sensor. The oxygen sensor plays a crucial role in monitoring the amount of oxygen in the exhaust gases and providing feedback to the engine control module for adjusting the air-fuel mixture. The Secondary Heated Oxygen Sensor 2 is typically located downstream of the catalytic converter and helps to ensure the efficiency of the catalytic converter in reducing emissions.
Common Causes of P0139 Acura
- Faulty Secondary Heated Oxygen Sensor 2
- Wiring or connector issues
- Exhaust leaks near the sensor
- Engine misfires
- Issues with the catalytic converter
Symptoms of P0139 Acura
- Decreased fuel efficiency
- Poor engine performance
- Rough idling or stalling
- Check Engine Light illuminated on the dashboard
How to Fix P0139 Acura
- Diagnose the issue using a scan tool to confirm the P0139 code and identify the specific cause of the slow response from the Secondary Heated Oxygen Sensor 2.
- Inspect the wiring and connectors for any damage or corrosion, repairing or replacing as necessary.
- Test the Secondary Heated Oxygen Sensor 2 to determine if it is faulty and replace it if needed.
- Check for exhaust leaks near the sensor and repair any leaks to prevent false readings.
- Clear the error code from the engine control module and conduct a test drive to ensure the issue has been resolved.
Cost to Fix P0139 Acura
The typical repair costs for addressing the P0139 code for an Acura vehicle can range from $200 to $500, including parts and labor. However, it is important to note that specific diagnosis time and labor rates at auto repair shops can vary based on factors such as location, vehicle make and model, and engine type. It is advisable to check with local auto repair shops for a more accurate estimate based on your specific circumstances.
Tech Notes for P0139 Acura
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Frequently Asked Questions about P0139 Acura Code
1. What are the common symptoms of OBDII code P0139 in an Acura?
- Common symptoms of P0139 include poor fuel efficiency, rough idle, engine misfires, and the illumination of the check engine light.
2. What does the OBDII code P0139 in an Acura indicate?
- P0139 indicates a slow response from the secondary heated oxygen sensor 2 in the vehicle's exhaust system.
3. What are the possible causes of the secondary heated oxygen sensor 2 slow response code in an Acura?
- Common causes of P0139 include a faulty oxygen sensor, wiring issues, exhaust leaks, or a malfunctioning catalytic converter.
4. How can I diagnose the cause of the P0139 code in my Acura?
- Diagnosing P0139 involves using an OBDII scanner to retrieve the code, inspecting the oxygen sensor and its wiring, checking for exhaust leaks, and testing the catalytic converter.
5. Can I continue driving my Acura with the P0139 code present?
- It is not recommended to drive your Acura with the P0139 code as it can lead to poor engine performance, decreased fuel efficiency, and potential damage to the catalytic converter.
6. How can I repair the secondary heated oxygen sensor 2 slow response code in my Acura?
- Repairing P0139 typically involves replacing the faulty oxygen sensor, repairing any damaged wiring, fixing exhaust leaks, or replacing a malfunctioning catalytic converter.
7. Is it possible to reset the P0139 code in my Acura without fixing the issue?
- While you can clear the code using an OBDII scanner, it will likely reappear if the underlying issue causing the P0139 code is not addressed.
8. How much does it cost to repair the P0139 code in an Acura?
- The cost of repairing P0139 varies depending on the specific issue, but it can range from $100 to $500 or more, including parts and labor.
9. Can a DIY enthusiast fix the P0139 code in an Acura?
- Depending on your mechanical skills and tools available, it is possible to replace the oxygen sensor or address wiring issues yourself. However, diagnosing and repairing exhaust leaks or catalytic converter problems may require professional help.
10. How often does the secondary heated oxygen sensor need to be replaced in an Acura?
- The secondary heated oxygen sensor may need replacement every 60,000 to 90,000 miles, but it can vary based on driving conditions and maintenance practices.
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