P0136 2015 Toyota RAV4 Code - Oxygen Sensor Circuit Malfunction Bank 1 Sensor 2
Quick Answer
In order to obtain a high purification rate of the Carbon Monoxide (CO), Hydrocarbon (HC), and Nitrogen Oxide (NOx) components in the exhaust gas, a Three-Way Catalytic Converter (TWC) is used. Common causes include Faulty Oxygen Sensor Bank 1 Sensor 2, Oxygen Sensor Bank 1 Sensor 2 harness is open or shorted, Oxygen Sensor Bank 1 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
- P0136 2015 Toyota RAV4 indicates Oxygen Sensor Circuit Malfunction Bank 1 Sensor 2.
- Common causes
- Common causes include Faulty Oxygen Sensor Bank 1 Sensor 2, Oxygen Sensor Bank 1 Sensor 2 harness is open or shorted, Oxygen Sensor Bank 1 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 P0136 2015 Toyota RAV4 Description
The heated oxygen sensor is located behind the TWC and detects the oxygen concentration in the exhaust gas. Since the sensor is integrated with the heater that heats the sensing portion, it is possible to detect the oxygen concentration even when the intake air volume is low (the exhaust gas temperature is low).
When the air-fuel ratio becomes lean, the oxygen concentration in the exhaust gas is high. The heated oxygen sensor informs the ECM that the post-TWC air-fuel ratio is lean (low voltage, i.e. less than 0.45 V).
Conversely, when the air-fuel ratio is richer than the stoichiometric air-fuel level, the oxygen concentration in the exhaust gas is low. The heated oxygen sensor informs the ECM that the post-TWC air-fuel ratio is rich (high voltage, i.e. more than 0.45 V). The heated oxygen sensor has the property of changing its output voltage drastically when the air-fuel ratio is close to the stoichiometric level.
The ECM uses the supplementary information from the heated oxygen sensor to determine whether the air-fuel ratio after the TWC is rich or lean and adjusts the fuel injection duration accordingly. Thus, if the heated oxygen sensor is working improperly due to internal malfunctions, the ECM is unable to compensate for deviations in the primary air-fuel ratio control.
The impedance cannot be measured using an ohmmeter. Diagnostic Trouble Code (DTC) P0136 indicates the deterioration of the heated oxygen sensor. The ECM stores the DTC by calculating the impedance of the sensor when the typical enabling conditions are satisfied.
What are the Possible Causes of the DTC P0136 2015 Toyota RAV4?
- Faulty Oxygen Sensor Bank 1 Sensor 2
- Oxygen Sensor Bank 1 Sensor 2 harness is open or shorted
- Oxygen Sensor Bank 1 Sensor 2 circuit poor electrical connection
- Gas leak from exhaust system
How to Fix the DTC P0136 2015 Toyota RAV4?
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 P0136 2015 Toyota RAV4 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.
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Frequently Asked Questions about P0136 2015 Toyota RAV4 Code
1. What does OBDII code P0136 mean for my 2015 Toyota RAV4?
The code P0136 indicates an Oxygen Sensor Circuit Malfunction for Bank 1 Sensor 2 in your vehicle.
2. What are the common symptoms of OBDII code P0136 in a 2015 Toyota RAV4?
Common symptoms of P0136 include poor fuel economy, rough idling, and an illuminated check engine light.
3. What are the possible causes of the Oxygen Sensor Circuit Malfunction Bank 1 Sensor 2 code in a 2015 Toyota RAV4?
Possible causes of P0136 include a faulty oxygen sensor, wiring issues, exhaust system leaks, or a damaged catalytic converter.
4. How can I diagnose the Oxygen Sensor Circuit Malfunction Bank 1 Sensor 2 code in my 2015 Toyota RAV4?
Diagnosing P0136 involves checking the oxygen sensor's wiring, inspecting the sensor for physical damage, and using a scan tool to monitor sensor data.
5. Can I drive my 2015 Toyota RAV4 with the P0136 code?
It is not recommended to drive with the P0136 code present, as it can lead to decreased fuel efficiency and potential engine damage.
6. How do I repair the Oxygen Sensor Circuit Malfunction Bank 1 Sensor 2 code in my 2015 Toyota RAV4?
Repairing P0136 may involve replacing the oxygen sensor, repairing wiring issues, fixing exhaust leaks, or replacing the catalytic converter if necessary.
7. Are there any DIY tips for fixing the P0136 code in a 2015 Toyota RAV4?
DIY tips include checking and cleaning sensor connections, inspecting for visible damage, and clearing the code to see if it returns after repairs.
8. How much does it cost to fix the Oxygen Sensor Circuit Malfunction Bank 1 Sensor 2 code in a 2015 Toyota RAV4?
The cost of fixing P0136 can vary depending on the exact issue, but it typically ranges from $100 for a sensor replacement to $500 for more extensive repairs.
9. Can a mechanic reset the P0136 code without fixing the underlying issue?
While a mechanic can clear the code, it is crucial to address the root cause of P0136 to prevent further problems and ensure proper vehicle operation.
10. How often should I check the oxygen sensors in my 2015 Toyota RAV4 to prevent the P0136 code from recurring?
It is recommended to inspect and replace oxygen sensors as part of regular maintenance every 60,000 to 90,000 miles to prevent issues like the P0136 code from reoccurring.
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