AutoCodes – Nissan – P0037 2006 Nissan Maxima

P0037 2006 Nissan Maxima Code - HO2S12 Heater Control Circuit Low

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, Heated Oxygen Sensor (H2OS) Bank 1 Sensor 2 fuse, Heated Oxygen Sensor (H2OS) Bank 1 Sensor 2 harness is open or shorted. 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 Nissan Maxima indicates HO2S12 Heater Control Circuit Low.
Common causes: Common causes include Faulty Heated Oxygen Sensor (H2OS) Bank 1 Sensor 2, Heated Oxygen Sensor (H2OS) Bank 1 Sensor 2 fuse, Heated Oxygen Sensor (H2OS) Bank 1 Sensor 2 harness is open or shorted.
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 9,407

How popular is this code, among other codes? Low

Repair Importance Level

Moderate (Service soon) (2 / 3)

Repair Difficulty Level

Intermediate (2 / 3)

What is this?

Table of contents Created and updated by William Orellana on Jun 14, 2020

Description
Step-by-Step Diagnostic Guide
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code P0037 2006 Nissan Maxima 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 Nissan Maxima - HO2S12 Heater Control Circuit Low - AutoCodes.com — P0037 2006 Nissan Maxima Code - HO2S12 Heater Control Circuit Low

What does this mean?

What are the Possible Causes of the DTC P0037 2006 Nissan Maxima?

Faulty Heated Oxygen Sensor (H2OS) Bank 1 Sensor 2
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 Nissan Maxima?

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 does this mean?

Code Tech Notes

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.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0037 2006 Nissan Maxima 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.

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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 Nissan Maxima Code

1. What does OBDII code P0037 for a 2006 Nissan Maxima indicate?

The code P0037 on a 2006 Nissan Maxima refers to the HO2S12 Heater Control Circuit Low, indicating a potential issue with the oxygen sensor heater circuit for bank 1 sensor 2.

2. What are the common symptoms of a P0037 code in a Nissan Maxima?

Common symptoms of a P0037 code in a 2006 Nissan Maxima may include poor fuel economy, rough idling, hesitation during acceleration, and the illumination of the check engine light.

3. What are the possible causes of a P0037 code in a 2006 Nissan Maxima?

Possible causes of a P0037 code in a 2006 Nissan Maxima include a faulty oxygen sensor, damaged wiring or connectors in the oxygen sensor circuit, a blown fuse, or a problem with the engine control module (ECM).

4. How can I diagnose a P0037 code in my 2006 Nissan Maxima?

Diagnosing a P0037 code in a 2006 Nissan Maxima involves checking the oxygen sensor for proper operation, inspecting the wiring and connectors for any damage, testing the oxygen sensor heater circuit, and verifying the ECM functionality.

5. Can I drive my 2006 Nissan Maxima with a P0037 code?

It is not recommended to drive your 2006 Nissan Maxima with a P0037 code for an extended period as it can affect your vehicle's performance and fuel efficiency. It's best to address the issue promptly to prevent further damage.

6. How much does it typically cost to repair a P0037 code in a 2006 Nissan Maxima?

The cost of repairing a P0037 code in a 2006 Nissan Maxima can vary depending on the exact cause of the issue. It may involve replacing the oxygen sensor, repairing damaged wiring, or addressing ECM problems, so costs can range from $100 to $500 or more.

7. Are there any DIY repair tips for fixing a P0037 code in a 2006 Nissan Maxima?

If you have experience with automotive repairs, you can attempt to replace the oxygen sensor yourself to address a P0037 code in a 2006 Nissan Maxima. However, diagnosing and repairing wiring or ECM issues may require professional assistance.

8. Will a P0037 code affect my 2006 Nissan Maxima's emissions?

Yes, a P0037 code on a 2006 Nissan Maxima can affect emissions by causing the vehicle to run less efficiently, potentially leading to increased emissions output. It's essential to address the issue promptly to maintain optimal emissions performance.

9. How long does it take to repair a P0037 code in a 2006 Nissan Maxima?

The time required to repair a P0037 code in a 2006 Nissan Maxima can vary based on the exact cause of the problem and the expertise of the technician. In general, the repair process can take anywhere from 1 to 3 hours.

10. Can a P0037 code in a 2006 Nissan Maxima cause other problems if left untreated?

If left untreated, a P0037 code in a 2006 Nissan Maxima can potentially lead to decreased fuel efficiency, engine performance issues, and even damage to the catalytic converter. It's crucial to address the code promptly to prevent further complications.