AutoCodes – Scion – P0038 2006 Scion xB

P0038 2006 Scion xB Code - Oxygen Sensor Heater Control Circuit High Bank 1 Sensor 2

Quick Answer

Oxygen Sensors (O2S) or Heated Oxygen Sensors (HO2S) need to reach a minimum operating temperature of 750 degrees F to produce an accurate voltage signal. Common causes include Faulty Heated Oxygen Sensor (H2OS) Bank 1 Sensor 2, EFI Relay, Heated Oxygen Sensor (H2OS) Bank 1 Sensor 2 fuse. 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
P0038 2006 Scion xB indicates Oxygen Sensor Heater Control Circuit High Bank 1 Sensor 2.
Common causes
Common causes include Faulty Heated Oxygen Sensor (H2OS) Bank 1 Sensor 2, EFI Relay, Heated Oxygen Sensor (H2OS) Bank 1 Sensor 2 fuse.
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.
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Code Popularity 5,948
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Jun 14, 2020
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Code P0038 2006 Scion xB Description

Oxygen Sensors (O2S) or Heated Oxygen Sensors (HO2S) need to reach a minimum operating temperature of 750 degrees F to produce an accurate voltage signal. The faster the heated oxygen sensor reaches that temperature the faster the sensor will start sending an accurate signal to the Engine Control Module (ECM).
In order to achieve the require temperature, a heater element is included inside the heated oxygen sensor. The ECM controls the heated oxygen sensor heater element based on signals from the engine coolant temperature and engine load. The ECM controls the heater element circuit by allowing current flow to ground.
The ECM monitors the voltage signal received through the heater element circuit and determines the state of the circuit by comparing the voltage detected with the factory specifications.
OBDII Code P0038 2006 Scion xB - Oxygen Sensor Heater Control Circuit High Bank 1 Sensor 2 - AutoCodes.com
P0038 2006 Scion xB Code - Oxygen Sensor Heater Control Circuit High Bank 1 Sensor 2

What are the Possible Causes of the DTC P0038 2006 Scion xB?

  • Faulty Heated Oxygen Sensor (H2OS) Bank 1 Sensor 2
  • EFI Relay
  • Heated Oxygen Sensor (H2OS) Bank 1 Sensor 2 fuse
  • Heated Oxygen Sensor (H2OS) Bank 1 Sensor 2 harness is open or shorted
  • Heated Oxygen Sensor (H2OS) Bank 1 Sensor 2 circuit poor electrical connection
  • Faulty Engine Control Module (ECM)

How to Fix the DTC P0038 2006 Scion xB?

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.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0038 2006 Scion xB 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 P0038 2006 Scion xB code?

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P0038 2006 Scion xB Code

1. What does the OBDII code P0038 for a 2006 Scion xB mean?

The code P0038 indicates a problem with the Oxygen Sensor Heater Control Circuit High for Bank 1 Sensor 2 in your 2006 Scion xB.

2. What are the common symptoms of a P0038 OBDII code in a 2006 Scion xB?

Common symptoms of a P0038 code may include poor fuel economy, rough idling, engine misfires, and the illumination of the Check Engine Light.

3. What are the possible causes of the P0038 code in a 2006 Scion xB?

Possible causes of a P0038 code include a faulty oxygen sensor, damaged wiring or connectors, a blown fuse, or issues with the engine control module (ECM).

4. How can I diagnose the P0038 code in my 2006 Scion xB?

Diagnosing a P0038 code typically involves checking the oxygen sensor's wiring and connectors, inspecting the fuse, testing the sensor, and verifying the ECM's functionality.

5. Can I drive my 2006 Scion xB with a P0038 OBDII code?

It is not recommended to drive your vehicle with a P0038 code, as it can lead to decreased fuel efficiency and potential damage to the catalytic converter.

6. How can I repair a P0038 OBDII code on my 2006 Scion xB?

Repairing a P0038 code may involve replacing the oxygen sensor, repairing damaged wiring or connectors, checking and replacing the fuse if necessary, and resetting the ECM.

7. Is it possible to clear a P0038 OBDII code in a 2006 Scion xB without fixing the underlying issue?

Clearing a P0038 code without addressing the underlying problem may temporarily turn off the Check Engine Light, but the code is likely to return if the issue is not resolved.

8. How much does it cost to fix a P0038 code on a 2006 Scion xB?

The cost of fixing a P0038 code can vary depending on the exact cause of the issue, but it may involve parts and labor expenses ranging from $100 to $300 or more.

9. Can a DIY enthusiast repair a P0038 OBDII code on a 2006 Scion xB?

With the right tools and knowledge, some DIY enthusiasts may be able to repair a P0038 code themselves by following repair guides or consulting with automotive experts.

10. How often does the Oxygen Sensor Heater Control Circuit High Bank 1 Sensor 2 fail in a 2006 Scion xB?

The failure of the Oxygen Sensor Heater Control Circuit High Bank 1 Sensor 2 in a 2006 Scion xB is not extremely common but can occur due to various factors such as age, mileage, and driving conditions.

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