P0136 2014 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 2014 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 2014 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 2014 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 2014 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 2014 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 2014 Toyota RAV4 Code
1. What does the OBDII code P0136 mean for a 2014 Toyota RAV4?
P0136 indicates a malfunction in the oxygen sensor circuit for Bank 1 Sensor 2, which is responsible for monitoring the efficiency of the catalytic converter.
2. What are common symptoms of P0136 on a 2014 Toyota RAV4?
Symptoms may include a check engine light, reduced fuel efficiency, rough idling, or increased exhaust emissions.
3. What causes the P0136 code on a 2014 Toyota RAV4?
Common causes include a faulty Bank 1 Sensor 2 oxygen sensor, damaged wiring or connectors, exhaust leaks, or a malfunctioning catalytic converter.
4. Is it safe to drive my 2014 Toyota RAV4 with the P0136 code?
While it may be safe for short distances, driving with this code can lead to reduced fuel efficiency and potential damage to the catalytic converter over time.
5. How do I fix the P0136 code on my 2014 Toyota RAV4?
Repairs may involve inspecting and replacing the Bank 1 Sensor 2 oxygen sensor, checking for damaged wiring or connectors, and addressing any exhaust leaks or catalytic converter issues.
6. How do I find Bank 1 Sensor 2 on a 2014 Toyota RAV4?
Bank 1 Sensor 2 is located downstream of the catalytic converter on the exhaust system.
7. Can a dirty or faulty oxygen sensor cause the P0136 code?
Yes, a dirty or faulty Bank 1 Sensor 2 oxygen sensor can trigger the P0136 code due to inaccurate readings.
8. What tools are needed to diagnose the P0136 code on a 2014 Toyota RAV4?
You’ll need an OBDII scanner, a multimeter for testing voltage, and basic tools to inspect and replace the oxygen sensor or wiring.
9. How much does it cost to repair the P0136 code on a 2014 Toyota RAV4?
The cost may range from $100 to $300 depending on whether the oxygen sensor needs replacement or if additional repairs are needed for wiring or exhaust leaks.
10. Can resetting the check engine light clear the P0136 code?
Resetting the check engine light may temporarily clear the code, but the underlying issue must be fixed to prevent the code from coming back.
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