P0136 2013 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 2013 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 2013 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 2013 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 2013 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 2013 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 2013 Toyota RAV4 Code
1. What does the OBDII code P0136 mean on a 2013 Toyota RAV4?
P0136 indicates a malfunction in the oxygen sensor circuit for Bank 1 Sensor 2, which monitors the efficiency of the catalytic converter.
2. What are the symptoms of a P0136 code in a 2013 Toyota RAV4?
Common symptoms include a lit Check Engine Light, decreased fuel efficiency, rough idle, and possibly increased emissions.
3. What causes the P0136 code in a 2013 Toyota RAV4?
Potential causes include a faulty oxygen sensor (Bank 1 Sensor 2), damaged or corroded wiring, a loose connection, or an issue with the vehicle's PCM (Powertrain Control Module).
4. How do I locate Bank 1 Sensor 2 on a 2013 Toyota RAV4?
Bank 1 Sensor 2 is the downstream oxygen sensor located after the catalytic converter on the same side as cylinder 1.
5. Can I drive my 2013 Toyota RAV4 with a P0136 code?
While it may be possible to drive, it’s not recommended as the issue can lead to poor fuel economy, higher emissions, and potential damage to the catalytic converter over time.
6. How do I fix the P0136 code on a 2013 Toyota RAV4?
Start by inspecting the oxygen sensor wiring and connections for damage or corrosion. If no issues are found, the oxygen sensor may need to be replaced.
7. How much does it cost to fix a P0136 code on a 2013 Toyota RAV4?
Replacing the oxygen sensor typically costs between $150 and $300, including parts and labor. Wiring repairs may vary depending on severity.
8. How can I prevent a P0136 code from recurring in my 2013 Toyota RAV4?
Regular maintenance, including checking and cleaning sensor connections, inspecting wiring, and using quality fuel, can help prevent this issue.
9. Will a bad catalytic converter cause a P0136 code in a 2013 Toyota RAV4?
While rare, a degraded catalytic converter can sometimes trigger this code if it affects the downstream oxygen sensor's readings.
10. Can a dirty air filter cause a P0136 code in a 2013 Toyota RAV4?
A dirty air filter is unlikely to cause this specific code, but it can indirectly affect engine performance and emissions, which may stress the oxygen sensor.
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