P0139 2018 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 2018 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 2018 Honda CR-V Description
What are the Possible Causes of the DTC P0139 2018 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 2018 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 2018 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 2018 Honda CR-V code?
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Frequently Asked Questions about P0139 2018 Honda CR-V Code
1. What does OBDII code P0139 mean on a 2018 Honda CR-V?
Code P0139 indicates that the secondary heated oxygen sensor (Bank 1, Sensor 2) has a slow response time in adjusting to changes in the air-fuel mixture.
2. What are the symptoms of P0139 on a 2018 Honda CR-V?
Common symptoms include an illuminated check engine light, reduced fuel efficiency, possible rough idling, and increased emissions.
3. What causes P0139 on a 2018 Honda CR-V?
Typical causes include a failing secondary oxygen sensor, exhaust leaks, wiring or connector issues, or soot buildup on the sensor.
4. Can I still drive my 2018 Honda CR-V with a P0139 code?
You can drive the vehicle, but it may result in reduced fuel economy and higher emissions. Prolonged driving without addressing the issue could lead to further damage.
5. How do I diagnose a P0139 code on my 2018 Honda CR-V?
Use an OBDII scanner to confirm the code, inspect the oxygen sensor and wiring for damage, and check for exhaust leaks or soot buildup.
6. How do I fix the P0139 code on a 2018 Honda CR-V?
Repairs may include replacing the oxygen sensor, fixing wiring or connector issues, cleaning the sensor, or repairing any exhaust leaks.
7. How much does it cost to fix a P0139 code on a 2018 Honda CR-V?
Replacing the secondary oxygen sensor typically costs between $150 and $300, including parts and labor. Additional repairs for wiring or exhaust issues may vary.
8. Can a dirty air filter cause P0139 on a 2018 Honda CR-V?
While unlikely, a dirty air filter can affect the air-fuel mixture, potentially contributing to oxygen sensor issues.
9. Does a P0139 code affect my 2018 Honda CR-V's emissions test?
Yes, a P0139 code can cause your vehicle to fail an emissions test due to improper oxygen sensor function.
10. Will clearing the P0139 code fix the issue on my 2018 Honda CR-V?
Clearing the code may turn off the check engine light temporarily, but the issue will likely return unless the underlying problem is resolved.
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