P0137 2015 Toyota RAV4 Code - Oxygen Sensor Circuit Low Voltage 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
- P0137 2015 Toyota RAV4 indicates Oxygen Sensor Circuit Low Voltage 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 P0137 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) P0137 indicates an open or short circuit in the heated oxygen sensor (2 driving cycles). The ECM stores the DTC when the impedance of the sensor exceeds the threshold 15 kΩ.
What are the Possible Causes of the DTC P0137 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 P0137 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 P0137 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.
Need more information about the P0137 2015 Toyota RAV4 code?
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Frequently Asked Questions about P0137 2015 Toyota RAV4 Code
1. What does OBDII code P0137 for a 2015 Toyota RAV4 mean?
The code P0137 indicates a low voltage condition in the oxygen sensor circuit of Bank 1 Sensor 2 in your 2015 Toyota RAV4.
2. What are the common symptoms of OBDII code P0137 in a Toyota RAV4?
Common symptoms of P0137 may include poor fuel economy, rough idling, engine hesitation, and an illuminated check engine light.
3. What are the possible causes of the P0137 code in a 2015 Toyota RAV4?
Potential causes of code P0137 include a faulty oxygen sensor, wiring issues in the sensor circuit, exhaust leaks, or a malfunctioning engine control module (ECM).
4. How can I diagnose the P0137 code on my 2015 Toyota RAV4?
Diagnosing code P0137 typically involves using an OBDII scanner to retrieve the code, checking the oxygen sensor's wiring and connections, inspecting for exhaust leaks, and testing the sensor's voltage output.
5. Can I drive my Toyota RAV4 with an unresolved P0137 code?
While the vehicle may still be operable with a P0137 code, it is recommended to address the issue promptly to prevent potential damage to the catalytic converter and ensure optimal engine performance.
6. How do I repair the P0137 code in my Toyota RAV4?
Repairing the P0137 code may involve replacing the Bank 1 Sensor 2 oxygen sensor, repairing damaged wiring or connections, fixing any exhaust leaks, or resetting the ECM after addressing the underlying issue.
7. Is it possible to reset the P0137 code in a Toyota RAV4 without fixing the problem?
Resetting the code without addressing the root cause may temporarily turn off the check engine light, but the code is likely to reappear once the ECM detects the issue again.
8. How much does it cost to fix the P0137 code in a 2015 Toyota RAV4?
The cost of repairing a P0137 code can vary depending on the specific issue, but it may range from around $100 for a DIY oxygen sensor replacement to several hundred dollars if professional diagnosis and repair are needed.
9. Can a P0137 code be triggered by a loose gas cap on a Toyota RAV4?
While a loose gas cap typically triggers an evaporative emissions code, such as P0442, it is unlikely to directly cause a P0137 code related to the oxygen sensor circuit.
10. How often should the oxygen sensors be replaced in a 2015 Toyota RAV4?
Oxygen sensors are generally designed to last 50,000 to 100,000 miles, but factors like driving conditions and maintenance practices can impact their lifespan. It's advisable to follow the manufacturer's recommended maintenance schedule for sensor replacement.
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