P0139 1999 Honda Civic Code - HO2S Bank 1 Sensor 2 Slow Response
Quick Answer
The P0139 diagnostic trouble code (DTC) for a 1999 Honda Civic specifically refers to a problem with the Heated Oxygen Sensor (HO2S) located on Bank 1, Sensor 2. Common causes include Faulty HO2S Bank 1 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 1999 Honda Civic indicates HO2S Bank 1 Sensor 2 Slow Response.
- Common causes
- Common causes include Faulty HO2S Bank 1 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 1999 Honda Civic Description
The P0139 diagnostic trouble code (DTC) for a 1999 Honda Civic specifically refers to a problem with the Heated Oxygen Sensor (HO2S) located on Bank 1, Sensor 2. This sensor is responsible for monitoring the oxygen content in the exhaust gases as they exit the catalytic converter. The slow response indicated by this code means that the sensor is not providing data to the engine control module (ECM) as quickly or accurately as it should.
Common Causes of P0139 1999 Honda Civic
- Faulty HO2S Bank 1 Sensor 2
- Wiring or connector issues
- Exhaust leaks near the sensor
- ECM malfunctions
- Contaminated sensor element
Symptoms of P0139 1999 Honda Civic
- Decreased fuel efficiency
- Rough idling or stalling
- Check Engine Light illuminated
- Increased emissions
- Reduced engine performance
How to Fix P0139 1999 Honda Civic
- Begin by diagnosing the specific cause of the slow response, such as testing the sensor's output using a scan tool.
- Inspect the wiring and connector for any damage or corrosion, repairing or replacing as necessary.
- Check for exhaust leaks near the sensor and repair them to prevent false readings.
- Replace the HO2S Bank 1 Sensor 2 if it is found to be faulty, ensuring proper installation and calibration.
- Clear the DTC and test drive the vehicle to ensure the issue has been resolved.
Cost to Fix P0139 1999 Honda Civic
The typical repair costs for addressing a P0139 code on a 1999 Honda Civic can vary depending on the specific cause of the issue. In general, the cost of a new HO2S Bank 1 Sensor 2 can range from $50 to $200, with labor costs adding an additional $80 to $150 per hour. The total repair cost, including parts and labor, could therefore be anywhere from $150 to $500. It is important to note that these are rough estimates, and actual costs may vary based on factors such as location, vehicle make and model, and labor rates at the auto repair shop.
Tech Notes for P0139 1999 Honda Civic
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Frequently Asked Questions about P0139 1999 Honda Civic Code
1. What are the common symptoms of OBDII code P0139 on a 1999 Honda Civic?
- Common symptoms include poor fuel economy, rough idling, and a noticeable decrease in engine performance.
2. What does the OBDII code P0139 "HO2S Bank 1 Sensor 2 Slow Response" mean for a 1999 Honda Civic?
- This code indicates that the oxygen sensor downstream of the catalytic converter in bank 1 is not responding as quickly as expected.
3. What are the possible causes of OBDII code P0139 on a 1999 Honda Civic?
- Potential causes include a faulty oxygen sensor, wiring issues, exhaust leaks, or a malfunctioning catalytic converter.
4. How can I diagnose the OBDII code P0139 on my 1999 Honda Civic?
- To diagnose this code, you can use an OBDII scanner to retrieve the code and then inspect the oxygen sensor, wiring connections, and exhaust system for any visible issues.
5. Can I continue driving my 1999 Honda Civic with the OBDII code P0139?
- It is not recommended to drive with this code unresolved, as it can lead to decreased fuel efficiency and potential damage to the catalytic converter over time.
6. How can I repair OBDII code P0139 on my 1999 Honda Civic?
- Repair options may include replacing the oxygen sensor, repairing any damaged wiring, fixing exhaust leaks, or replacing the catalytic converter if necessary.
7. Are there any DIY tips for resolving OBDII code P0139 on a 1999 Honda Civic?
- DIY tips may include checking and cleaning the oxygen sensor connections, inspecting the wiring for damage, and ensuring there are no exhaust leaks.
8. How much does it typically cost to fix OBDII code P0139 on a 1999 Honda Civic?
- The cost of repairs for this code can vary depending on the specific issue, but it may range from $100 to $500 or more, including parts and labor.
9. Can a bad fuel injector cause OBDII code P0139 on a 1999 Honda Civic?
- While a bad fuel injector is not a common cause of this specific code, it can contribute to related symptoms like poor fuel economy and rough idling.
10. How often should the oxygen sensor be replaced in a 1999 Honda Civic to prevent OBDII code P0139?
- Oxygen sensors typically last around 60,000 to 90,000 miles, so it is recommended to replace them within this mileage range to prevent issues like code P0139.
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