AutoCodes – Scion – P0037 2006 Scion xB

P0037 2006 Scion xB Code - Oxygen Sensor Heater Control Circuit Low 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
P0037 2006 Scion xB indicates Oxygen Sensor Heater Control Circuit Low 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 7,942
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 P0037 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 P0037 2006 Scion xB - Oxygen Sensor Heater Control Circuit Low Bank 1 Sensor 2 - AutoCodes.com
P0037 2006 Scion xB Code - Oxygen Sensor Heater Control Circuit Low Bank 1 Sensor 2

What are the Possible Causes of the DTC P0037 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 P0037 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 P0037 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 P0037 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 P0037 2006 Scion xB Code

1. What are the common symptoms of OBDII code P0037 on a 2006 Scion xB?

- Common symptoms include poor fuel economy, rough idling, and the illumination of the check engine light.

2. What does the OBDII code P0037 in a 2006 Scion xB mean?

- The code P0037 indicates a problem with the oxygen sensor heater control circuit for Bank 1 Sensor 2, which is the downstream oxygen sensor on the same side as the number one cylinder.

3. What are the possible causes of OBDII code P0037 on a 2006 Scion xB?

- Possible causes include a faulty oxygen sensor, damaged wiring or connectors, a blown fuse, or issues with the engine control module.

4. How can I diagnose the OBDII code P0037 on my 2006 Scion xB?

- You can diagnose this code by checking the oxygen sensor heater circuit for continuity, inspecting the wiring and connectors for damage, and testing the oxygen sensor's operation.

5. Can I drive my 2006 Scion xB with the OBDII code P0037?

- It is generally safe to drive with this code, but it is recommended to address the issue promptly to prevent potential damage to the catalytic converter and ensure optimal engine performance.

6. How can I repair OBDII code P0037 on a 2006 Scion xB?

- Repair options include replacing the oxygen sensor, repairing or replacing damaged wiring and connectors, checking and replacing fuses if necessary, and resetting the engine control module.

7. How much does it cost to fix OBDII code P0037 on a 2006 Scion xB?

- The cost of fixing this code can vary depending on the underlying issue, but it typically ranges from $150 to $400 for parts and labor.

8. Can I reset the check engine light after fixing OBDII code P0037 on my 2006 Scion xB?

- Yes, you can reset the check engine light by using an OBDII scanner or disconnecting the car's battery for a few minutes to clear the error code.

9. How often does OBDII code P0037 occur in a 2006 Scion xB?

- This code can occur sporadically or persistently, depending on the severity of the issue and the driving conditions. It is recommended to address it as soon as possible.

10. Will OBDII code P0037 affect the emissions test for my 2006 Scion xB?

- Yes, having an unresolved P0037 code may cause your vehicle to fail the emissions test, as it indicates a problem with the oxygen sensor heater control circuit, which is crucial for emissions control.

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