P0137 2015 Toyota RAV4 Code - Oxygen Sensor Circuit Low Voltage Bank 1 Sensor 2

The code P0137 indicates a low voltage condition in the oxygen sensor circuit of Bank 1 Sensor 2 in your 2015 Toyota RAV4.

Common symptoms of P0137 may include poor fuel economy, rough idling, engine hesitation, and an illuminated check engine light.

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).

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.

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.

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.

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.

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.

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.

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.