P0138 2006 Scion xB Code - Oxygen Sensor Circuit High Voltage Bank 1 Sensor 2
Quick Answer
The P0138 diagnostic trouble code (DTC) for a 2006 Scion xB indicates an issue with the Oxygen Sensor Circuit High Voltage Bank 1 Sensor 2. Common causes include Faulty oxygen sensor, Wiring or connector issues, Exhaust system leaks. 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 2006 Scion xB indicates Oxygen Sensor Circuit High Voltage Bank 1 Sensor 2.
- Common causes
- Common causes include Faulty oxygen sensor, Wiring or connector issues, Exhaust system leaks.
- 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 2006 Scion xB Description
The P0138 diagnostic trouble code (DTC) for a 2006 Scion xB indicates an issue with the Oxygen Sensor Circuit High Voltage Bank 1 Sensor 2. This specific sensor is located downstream of the catalytic converter on the exhaust system. The primary function of the oxygen sensor is to measure the amount of oxygen in the exhaust gases and provide feedback to the engine control module (ECM) for proper air-fuel ratio adjustment.
Common Causes of P0138 2006 Scion xB
- Faulty oxygen sensor
- Wiring or connector issues
- Exhaust system leaks
- Engine running rich
- Faulty ECM
Symptoms of P0138 2006 Scion xB
- Decreased fuel efficiency
- Rough idling or stalling
- Check Engine Light illuminated on the dashboard
- Increased emissions
- Poor engine performance
How to Fix P0138 2006 Scion xB
- Perform a visual inspection of the oxygen sensor wiring and connectors to check for any damage or corrosion. Repair or replace as necessary.
- Test the oxygen sensor using a multimeter to ensure it is functioning properly. Replace the sensor if needed.
- Check for any exhaust leaks that could be affecting the sensor readings. Repair any leaks found.
- Clear the DTC using an OBD-II scanner and monitor the sensor readings to ensure the issue has been resolved.
- If the problem persists, further diagnostics may be required to identify any underlying engine issues that could be causing the high voltage signal.
Cost to Fix P0138 2006 Scion xB
The typical repair costs for addressing a P0138 code on a 2006 Scion xB can vary depending on the specific cause of the issue. Generally, replacing an oxygen sensor can cost between $100 to $300, including parts and labor. However, if additional repairs or diagnostics are needed, the total cost could increase. It's important to consult with a qualified mechanic or automotive technician to get an accurate estimate based on the specific circumstances of the vehicle. Remember that labor rates and part prices can vary based on location, so it's advisable to shop around for the best deal.
Tech Notes for P0138 2006 Scion xB
When is the Code Detected?
Need more information about the P0138 2006 Scion xB code?
Need more information on how to fix the P0138 2006 Scion xB code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the P0138 2006 Scion xB code diagnosed by a professional: Find a repair shop in your area
Frequently Asked Questions about P0138 2006 Scion xB Code
1. What does OBDII code P0138 for a 2006 Scion xB mean?
The code P0138 indicates a high voltage condition in the oxygen sensor circuit of Bank 1 Sensor 2 in a 2006 Scion xB.
2. What are common symptoms of a P0138 code in a 2006 Scion xB?
Common symptoms of a P0138 code may include poor fuel economy, rough idling, engine misfires, and the illumination of the Check Engine Light.
3. What can cause the P0138 code to appear in a 2006 Scion xB?
The P0138 code in a 2006 Scion xB is often triggered by issues such as a faulty oxygen sensor, wiring problems, exhaust leaks, or a malfunctioning engine control module (ECM).
4. How can I diagnose a P0138 code in my 2006 Scion xB?
To diagnose a P0138 code, you can use an OBDII scanner to retrieve the code and then inspect the oxygen sensor, wiring connections, and exhaust system for any visible damage or issues.
5. Can I drive my 2006 Scion xB with a P0138 code?
It is not recommended to drive your 2006 Scion xB with a P0138 code, as it can lead to poor engine performance and potentially cause further damage to the vehicle.
6. How do I repair a P0138 code on my 2006 Scion xB?
To repair a P0138 code, you may need to replace the Bank 1 Sensor 2 oxygen sensor, repair any damaged wiring, fix exhaust leaks, or reprogram the ECM if necessary.
7. How much does it cost to fix a P0138 code in a 2006 Scion xB?
The cost to fix a P0138 code in a 2006 Scion xB can vary depending on the root cause of the issue, but it may range from $100 to $400 for parts and labor.
8. Can a P0138 code be triggered by a loose gas cap on a 2006 Scion xB?
While a loose gas cap can trigger some other codes, it is unlikely to cause a P0138 code. The P0138 code specifically relates to the oxygen sensor circuit.
9. How often should the oxygen sensors be replaced in a 2006 Scion xB?
Oxygen sensors in a 2006 Scion xB typically last around 100,000 miles, but it is recommended to follow the manufacturer's maintenance schedule for inspection and replacement.
10. Will resetting the error codes make the P0138 code disappear on a 2006 Scion xB?
Resetting the error codes may temporarily clear the Check Engine Light, but the P0138 code will reappear if the underlying issue is not addressed.
Discuss the causes and fixes for P0138 2006 Scion xB OBDII Code
Code P0138 2006 Scion xB 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.