Engine-CodesNissan – P0037 2012 Nissan Versa

P0037 2012 Nissan Versa Code - HO2S12 Heater Control Circuit Low

Quick Answer

The P0037 code for a 2012 Nissan Versa signifies an issue with the HO2S12 Heater Control Circuit. Common causes include Faulty Oxygen Sensor: The oxygen sensor itself may be malfunctioning, causing the heater control circuit to operate improperly, Wiring Issues: Damaged or corroded wiring leading to the oxygen sensor can disrupt the heater control circuit, Poor Electrical Connection: A loose or poor electrical connection at the oxygen sensor can prevent the heater from functioning correctly. 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 2012 Nissan Versa indicates HO2S12 Heater Control Circuit Low.
Common causes
Common causes include Faulty Oxygen Sensor: The oxygen sensor itself may be malfunctioning, causing the heater control circuit to operate improperly, Wiring Issues: Damaged or corroded wiring leading to the oxygen sensor can disrupt the heater control circuit, Poor Electrical Connection: A loose or poor electrical connection at the oxygen sensor can prevent the heater from functioning correctly.
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.
Table of contents Created and updated by William Orellana on Aug 18, 2024
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Code P0037 2012 Nissan Versa Description

The P0037 code for a 2012 Nissan Versa signifies an issue with the HO2S12 Heater Control Circuit. The code indicates that the heating element in the oxygen sensor located after the catalytic converter on bank 1 sensor 2 is not functioning properly. The purpose of the heater in the oxygen sensor is to bring it up to operating temperature quickly for accurate readings. When the heater control circuit is low, it can lead to inefficient fuel management, reduced engine performance, and increased emissions. If left unaddressed, this issue can potentially lead to damage to the catalytic converter and other components of the vehicle's emissions system.

OBDII Code P0037 2012 Nissan Versa - HO2S12 Heater Control Circuit Low
P0037 2012 Nissan Versa Code - HO2S12 Heater Control Circuit Low

Common Causes of P0037 2012 Nissan Versa

  1. Faulty Oxygen Sensor: The oxygen sensor itself may be malfunctioning, causing the heater control circuit to operate improperly.
  2. Wiring Issues: Damaged or corroded wiring leading to the oxygen sensor can disrupt the heater control circuit.
  3. Poor Electrical Connection: A loose or poor electrical connection at the oxygen sensor can prevent the heater from functioning correctly.
  4. Heater Element Failure: The heating element within the oxygen sensor may have failed, leading to a low heater control circuit.
  5. PCM (Powertrain Control Module) Failure: A malfunctioning PCM can also cause issues with the heater control circuit.

Symptoms of P0037 2012 Nissan Versa

  1. Check Engine Light: The most common symptom associated with this code is the illumination of the check engine light on the dashboard.
  2. Poor Fuel Economy: A faulty HO2S12 heater control circuit can lead to incorrect fuel mixture readings, resulting in reduced fuel efficiency.
  3. Rough Idling: The engine may experience rough idling or hesitation due to inaccurate oxygen sensor readings.
  4. Failed Emissions Test: If the issue is not resolved, it can lead to increased emissions, causing the vehicle to fail an emissions test.
  5. Decreased Engine Performance: The vehicle may exhibit a decrease in overall engine performance, including power and acceleration.

How to Fix P0037 2012 Nissan Versa

  1. Diagnose the Issue: Use an OBD-II scanner to retrieve the specific code and determine the exact cause of the problem.
  2. Inspect Wiring and Connections: Check the wiring and connections leading to the oxygen sensor for any damage or corrosion.
  3. Test Oxygen Sensor: Test the oxygen sensor to ensure that the heater element is functioning properly.
  4. Replace Oxygen Sensor: If the heater element is faulty, replace the oxygen sensor with a new one.
  5. Clear Codes and Test Drive: Clear the diagnostic trouble codes from the PCM and test drive the vehicle to ensure that the issue has been resolved.

Cost to Fix P0037 2012 Nissan Versa

The typical repair costs for addressing a P0037 code on a 2012 Nissan Versa can vary depending on the specific cause of the issue. On average, the cost of replacing an oxygen sensor can range from $200 to $400 for parts and labor. However, additional costs may apply if wiring repairs or PCM replacement are necessary. It is recommended to consult with a certified mechanic or auto repair shop for a more accurate estimate based on the individual circumstances of the vehicle. Labor rates at auto repair shops can vary, so it is advisable to inquire about specific rates in your area.

Tech Notes for P0037 2012 Nissan Versa

The code means that there is a problem with the heater element circuit of the heated oxygen sensor. Water getting inside the heated oxygen sensor connector can caused the heated oxygen sensor fuse to blow, which is a very common problem for this type codes. Before replacing the sensor, check for the condition of the heated oxygen sensor fuse and connectors.

When is the Code Detected?

The P0037 is set when the ECM detects an excessively low voltage through the heated oxygen sensor heater circuit

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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 2012 Nissan Versa Code

1. What does the OBDII code P0037 on a 2012 Nissan Versa mean?

The code P0037 on a 2012 Nissan Versa indicates a problem with the HO2S12 (Heated Oxygen Sensor Bank 1 Sensor 2) heater control circuit, specifically that the heater control circuit is registering low voltage.

2. What are the common symptoms of the P0037 OBDII code on a 2012 Nissan Versa?

Common symptoms of the P0037 code may include poor fuel economy, rough idling, engine misfires, and the illumination of the Check Engine Light on the dashboard.

3. What are the possible causes of the P0037 code on a 2012 Nissan Versa?

Possible causes of the P0037 code include a faulty HO2S12 sensor, damaged wiring or connectors in the heater circuit, a blown heater circuit fuse, or an issue with the engine control module (ECM).

4. How can I diagnose the P0037 code on my 2012 Nissan Versa?

Diagnosing the P0037 code typically involves checking the voltage and resistance of the HO2S12 sensor, inspecting the wiring and connectors for damage or corrosion, and verifying the integrity of the heater circuit fuse.

5. What is the repair process for the P0037 code on a 2012 Nissan Versa?

The repair process for the P0037 code may involve replacing the HO2S12 sensor, repairing or replacing damaged wiring or connectors, replacing the heater circuit fuse if necessary, and clearing the code with an OBDII scanner.

6. Can I continue driving my 2012 Nissan Versa with the P0037 code present?

It is generally not recommended to continue driving your vehicle with the P0037 code active, as it can lead to reduced fuel efficiency and potential engine performance issues. It is best to address the issue promptly.

7. How much does it typically cost to repair the P0037 code on a 2012 Nissan Versa?

The cost of repairing the P0037 code on a 2012 Nissan Versa can vary depending on the specific cause of the issue, but it may range from $100 to $300 for parts and labor.

8. Are there any preventative measures to avoid the P0037 code on a 2012 Nissan Versa?

To help prevent the P0037 code from reoccurring, it's important to perform regular maintenance on your vehicle, such as keeping up with scheduled tune-ups, replacing oxygen sensors at recommended intervals, and ensuring all electrical connections are secure.

9. Can a DIY enthusiast fix the P0037 code issue on a 2012 Nissan Versa?

Depending on your skill level and access to tools, a DIY enthusiast may be able to address the P0037 code by replacing the HO2S12 sensor or checking and repairing wiring issues. However, more complex diagnostics and repairs may require professional assistance.

10. How long does it take to repair the P0037 code on a 2012 Nissan Versa?

The repair time for the P0037 code can vary based on the specific cause of the issue and the expertise of the technician. In general, the repair process can take anywhere from 1 to 3 hours to complete.

Discuss the causes and fixes for P0037 2012 Nissan Versa OBDII Code

  • Yes we had replaced the upstream and downstream O2 sensors. We still are getting the 0037 code. It's the H2os code. Is that a circuit or an o2 sensor problem

  • We've changed the upstream and the downstream 02 sensors but are still getting H20s