P0138 2016 Toyota RAV4 Code - Oxygen Sensor Circuit High Voltage Bank 1 Sensor 2
Quick Answer
The P0138 diagnostic trouble code (DTC) for a 2016 Toyota RAV4 indicates an issue with the Oxygen Sensor Circuit High Voltage Bank 1 Sensor 2. Common causes include Faulty oxygen sensor, Damaged wiring or connectors, Exhaust leaks near the oxygen sensor. 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
- P0138 2016 Toyota RAV4 indicates Oxygen Sensor Circuit High Voltage Bank 1 Sensor 2.
- Common causes
- Common causes include Faulty oxygen sensor, Damaged wiring or connectors, Exhaust leaks near the oxygen sensor.
- 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.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.
Code P0138 2016 Toyota RAV4 Description
The P0138 diagnostic trouble code (DTC) for a 2016 Toyota RAV4 indicates an issue with the Oxygen Sensor Circuit High Voltage Bank 1 Sensor 2. This code specifically refers to the oxygen sensor located downstream or after the catalytic converter in the exhaust system. The oxygen sensor plays a crucial role in monitoring the oxygen levels in the exhaust gases to help the engine control module (ECM) adjust the air-fuel mixture for optimal combustion efficiency.
Common Causes of P0138 2016 Toyota RAV4
- Faulty oxygen sensor
- Damaged wiring or connectors
- Exhaust leaks near the oxygen sensor
- ECM malfunction
- Contaminated or poor-quality fuel affecting sensor readings
Symptoms of P0138 2016 Toyota RAV4
- Check Engine Light illuminated on the dashboard
- Decreased fuel efficiency
- Rough idling or stalling
- Poor acceleration or engine performance
- Increased emissions output
How to Fix P0138 2016 Toyota RAV4
- Begin by diagnosing the specific cause of the high voltage signal from the oxygen sensor using a scan tool to retrieve live data and pinpoint the issue.
- Inspect the oxygen sensor, wiring, and connectors for any visible damage or corrosion. Replace any damaged components as needed.
- Check for exhaust leaks near the oxygen sensor and repair them to prevent false readings.
- Test the ECM functionality and replace it if necessary to ensure proper communication with the oxygen sensor.
- Clear the DTC and reset the ECM to monitor the oxygen sensor's readings and verify that the issue has been resolved.
Cost to Fix P0138 2016 Toyota RAV4
The typical repair costs for addressing a P0138 code on a 2016 Toyota RAV4 can range from $200 to $500, including parts and labor. However, it's important to note that specific diagnosis time and labor rates at auto repair shops can vary based on factors such as location, vehicle make and model, and engine type. Most auto repair shops charge between $80 and $150 per hour for labor, but rates may be higher in metropolitan areas or at dealerships, while independent shops often offer lower rates. For a more accurate estimate, it's advisable to check local rates before proceeding with the repair.
Tech Notes for P0138 2016 Toyota RAV4
Need more information about the P0138 2016 Toyota RAV4 code?
Need more information on how to fix the P0138 2016 Toyota RAV4 code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the P0138 2016 Toyota RAV4 code diagnosed by a professional: Find a repair shop in your area
Frequently Asked Questions about P0138 2016 Toyota RAV4 Code
What does the OBDII code P0138 mean on a 2016 Toyota RAV4?
P0138 indicates that the oxygen sensor (Bank 1, Sensor 2) has detected a higher-than-expected voltage, suggesting a possible fault in the sensor or the circuit.
What is Bank 1, Sensor 2 in a 2016 Toyota RAV4?
Bank 1 refers to the side of the engine with cylinder 1, and Sensor 2 is the downstream oxygen sensor located after the catalytic converter.
What are the common symptoms of the P0138 code in a 2016 Toyota RAV4?
Symptoms may include a check engine light, decreased fuel efficiency, rough idling, or a strong fuel smell from the exhaust.
What causes the P0138 code to appear in a 2016 Toyota RAV4?
Potential causes include a faulty oxygen sensor, damaged wiring or connectors, a short circuit, or issues with the vehicle’s ECM.
Can I drive my 2016 Toyota RAV4 with the P0138 code?
While the vehicle may still run, driving with this code can lead to increased emissions, lower fuel efficiency, and potential damage to the catalytic converter.
How do I diagnose the P0138 code on my 2016 Toyota RAV4?
Use an OBDII scanner to confirm the code, inspect the oxygen sensor wiring and connectors, and test the downstream oxygen sensor for proper voltage readings.
How do I fix the P0138 code on a 2016 Toyota RAV4?
Repairs may include replacing the downstream oxygen sensor, repairing damaged wiring, or addressing any underlying issues with the ECM.
How much does it cost to fix the P0138 code on a 2016 Toyota RAV4?
Replacing an oxygen sensor typically costs between $150 and $300, including parts and labor, though costs may vary based on location and mechanic rates.
Can a bad catalytic converter trigger the P0138 code on a 2016 Toyota RAV4?
Yes, a failing catalytic converter can cause abnormal oxygen sensor readings, potentially triggering the P0138 code.
How can I prevent the P0138 code from recurring on my 2016 Toyota RAV4?
Regular maintenance, including checking and replacing oxygen sensors as needed, inspecting wiring, and using high-quality fuel, can help prevent this code.
Discuss the causes and fixes for P0138 2016 Toyota RAV4 OBDII Code
Code P0138 2016 Toyota RAV4 comments
No comments found for this page.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.