P0139 2021 Honda CR-V Code - Secondary Heated Oxygen Sensor 2 Slow Response
Quick Answer
The Secondary Heated Oxygen Sensor (Secondary HO2S (Sensor 2)) detects the oxygen content in the exhaust gas downstream of the three-way catalytic converter (TWC) during stoichiometric air/fuel ratio feedback control. Common causes include Faulty Secondary Heated Oxygen Sensor 2, Secondary Heated Oxygen Sensor 2 harness is open or shorted, Secondary Heated Oxygen Sensor 2 circuit poor electrical connection. 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 2021 Honda CR-V indicates Secondary Heated Oxygen Sensor 2 Slow Response.
- Common causes
- Common causes include Faulty Secondary Heated Oxygen Sensor 2, Secondary Heated Oxygen Sensor 2 harness is open or shorted, Secondary Heated Oxygen Sensor 2 circuit poor electrical connection.
- 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.
Code P0139 2021 Honda CR-V Description
What are the Possible Causes of the DTC P0139 2021 Honda CR-V?
- Faulty Secondary Heated Oxygen Sensor 2
- Secondary Heated Oxygen Sensor 2 harness is open or shorted
- Secondary Heated Oxygen Sensor 2 circuit poor electrical connection
- Exhaust system failure (exhaust gas leak)
How to Fix the DTC P0139 2021 Honda CR-V?
Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.
Code Tech Notes
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P0139 2021 Honda CR-V code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.
Need more information about the P0139 2021 Honda CR-V code?
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Frequently Asked Questions about P0139 2021 Honda CR-V Code
1. What are the common symptoms of OBDII code P0139 on a 2021 Honda CR-V?
- Common symptoms include poor fuel economy, rough idling, and an illuminated check engine light.
2. What does the OBDII code P0139 for a 2021 Honda CR-V indicate?
- OBDII code 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 OBDII code P0139 on a 2021 Honda CR-V?
- Potential causes include a faulty secondary heated oxygen sensor, wiring issues, exhaust leaks, or a problem with the engine's air-fuel ratio.
4. How can I diagnose the cause of OBDII code P0139 on my 2021 Honda CR-V?
- Diagnose by checking the secondary heated oxygen sensor's wiring, inspecting for exhaust leaks, and performing a scan tool test to monitor sensor response.
5. Can I continue driving my 2021 Honda CR-V with an OBDII code P0139?
- It is not recommended to continue driving with this code as it can lead to decreased fuel efficiency and potential damage to the catalytic converter.
6. How can I repair OBDII code P0139 on my 2021 Honda CR-V?
- Repair options include replacing the secondary heated oxygen sensor, repairing any wiring issues, fixing exhaust leaks, or addressing any air-fuel ratio problems.
7. Are there any DIY tips for fixing OBDII code P0139 on a 2021 Honda CR-V?
- DIY tips include ensuring the sensor is properly connected, checking for visible damage to the wiring, and using an OBDII scanner to reset the code after repairs.
8. How much does it typically cost to repair OBDII code P0139 on a 2021 Honda CR-V?
- The cost can vary depending on the exact cause, but expect to pay between $150 to $400 for parts and labor to address this code.
9. Will resetting the OBDII code P0139 on my 2021 Honda CR-V make it go away permanently?
- Resetting the code may temporarily turn off the check engine light, but if the underlying issue is not fixed, the code is likely to reappear.
10. How often should I have the secondary heated oxygen sensor in my 2021 Honda CR-V inspected to prevent OBDII code P0139?
- It is recommended to have the sensor inspected during regular maintenance intervals or whenever you notice changes in the vehicle's performance or fuel efficiency.
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