P0139 2020 Honda CR-V Code - Secondary Heated Oxygen Sensor 2 Slow Response
Quick Answer
The P0139 diagnostic trouble code (DTC) for a 2020 Honda CR-V refers to a problem with the Secondary Heated Oxygen Sensor 2 (HO2S2) in the vehicle's exhaust system. Common causes include Faulty Secondary Heated Oxygen Sensor 2, Wiring issues or corrosion, 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 2020 Honda CR-V indicates Secondary Heated Oxygen Sensor 2 Slow Response.
- Common causes
- Common causes include Faulty Secondary Heated Oxygen Sensor 2, Wiring issues or corrosion, 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.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.
Code P0139 2020 Honda CR-V Description
The P0139 diagnostic trouble code (DTC) for a 2020 Honda CR-V refers to a problem with the Secondary Heated Oxygen Sensor 2 (HO2S2) in the vehicle's exhaust system. This sensor is responsible for monitoring the oxygen levels in the exhaust gases and providing feedback to the engine control module (ECM) to adjust the air-fuel mixture for optimal combustion. A "slow response" indicates that the sensor is not reacting quickly enough to changes in the exhaust gas composition, which can lead to issues with engine performance, emissions, and fuel efficiency.
Common Causes of P0139 2020 Honda CR-V
- Faulty Secondary Heated Oxygen Sensor 2
- Wiring issues or corrosion
- Exhaust leaks near the sensor
- ECM software or hardware problems
- Exhaust system damage or leaks
Symptoms of P0139 2020 Honda CR-V
- Decreased fuel efficiency
- Engine misfires
- Rough idling or stalling
- Check Engine Light illuminated
- Increased emissions
How to Fix P0139 2020 Honda CR-V
- Use an OBD-II scanner to confirm the P0139 code and verify the Secondary HO2S2 is the issue.
- Inspect the wiring harness and connections for any damage or corrosion. Repair or replace as needed.
- Check for exhaust leaks near the sensor and repair them if found.
- Replace the Secondary Heated Oxygen Sensor 2 with a new, OEM-quality sensor.
- Clear the DTC and perform a test drive to ensure the issue has been resolved.
Cost to Fix P0139 2020 Honda CR-V
The cost of repairing a P0139 code on a 2020 Honda CR-V can vary depending on the specific cause of the issue. Typically, the price of a new Secondary Heated Oxygen Sensor 2 can range from $50 to $200, depending on the brand and quality. Labor costs for this repair can range from $100 to $300, depending on the shop's hourly rate and the complexity of the repair. Overall, the total cost of repairing a P0139 code on a Honda CR-V can range from $150 to $500. It is advisable to consult with a trusted mechanic or auto repair shop to get an accurate estimate based on your specific vehicle and location.
Tech Notes for P0139 2020 Honda CR-V
Need more information about the P0139 2020 Honda CR-V code?
Need more information on how to fix the P0139 2020 Honda CR-V code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the P0139 2020 Honda CR-V code diagnosed by a professional: Find a repair shop in your area
Frequently Asked Questions about P0139 2020 Honda CR-V Code
What does the OBDII code P0139 indicate for a 2020 Honda CR-V?
P0139 indicates that the secondary heated oxygen sensor 2 is responding slowly, which can impact the vehicle's emissions and fuel efficiency.
What are the common symptoms associated with the P0139 code?
Common symptoms include poor fuel economy, rough engine performance, increased emissions, and the check engine light being illuminated.
What could cause the P0139 code to trigger in a Honda CR-V?
Potential causes include a faulty secondary oxygen sensor, exhaust leaks, wiring issues, or problems with the engine control module (ECM).
How can I diagnose the issue related to the P0139 code?
You can start by visually inspecting the oxygen sensor and its wiring for damage, checking for exhaust leaks, and using a scan tool to monitor the sensor's voltage and response time.
Is it safe to drive my Honda CR-V with the P0139 code?
While it may be safe to drive, it is advisable to address the issue promptly to avoid potential damage to the engine or increased emissions.
What repairs are commonly needed to fix the P0139 code?
Common repairs may include replacing the secondary oxygen sensor, fixing any wiring issues, or sealing exhaust leaks.
How can I prevent the P0139 code from occurring again?
Regular maintenance, including checking the exhaust system and ensuring proper sensor operation, can help prevent the recurrence of this code.
Will clearing the P0139 code resolve the issue permanently?
Clearing the code may turn off the check engine light temporarily, but if the underlying issue isn't fixed, the code is likely to return.
Can I replace the oxygen sensor myself to fix the P0139 code?
If you have mechanical experience and the proper tools, you can replace the oxygen sensor yourself. However, ensure you follow safety guidelines and consult the vehicle’s service manual.
Discuss the causes and fixes for P0139 2020 Honda CR-V OBDII Code
Code P0139 2020 Honda CR-V comments
No comments found for this page.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.