Engine-CodesFord – P0037 2019 Ford F150

P0037 2019 Ford F150 Code - HO2S Heater Control Circuit Low Bank 1 Sensor 2

Quick Answer

The P0037 diagnostic trouble code (DTC) for a 2019 Ford F150 refers to a malfunction in the HO2S (Heated Oxygen Sensor) Heater Control Circuit for Bank 1 Sensor 2. Common causes include Faulty HO2S Sensor: The oxygen sensor itself may be malfunctioning, causing the heater control circuit to operate outside of normal parameters, Wiring Issues: Damage or corrosion in the wiring harness connected to the sensor can disrupt the voltage supply to the heater circuit, Blown Fuse: A blown fuse in the heater circuit can also trigger this code, cutting off power to the sensor. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means
P0037 2019 Ford F150 indicates HO2S Heater Control Circuit Low Bank 1 Sensor 2.
Common causes
Common causes include Faulty HO2S Sensor: The oxygen sensor itself may be malfunctioning, causing the heater control circuit to operate outside of normal parameters, Wiring Issues: Damage or corrosion in the wiring harness connected to the sensor can disrupt the voltage supply to the heater circuit, Blown Fuse: A blown fuse in the heater circuit can also trigger this code, cutting off power to the sensor.
Severity
High - diagnose this code as soon as possible.
Can I drive?
Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
Table of contents Created and updated by William Orellana on Sep 10, 2024
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Code P0037 2019 Ford F150 Description

The P0037 diagnostic trouble code (DTC) for a 2019 Ford F150 refers to a malfunction in the HO2S (Heated Oxygen Sensor) Heater Control Circuit for Bank 1 Sensor 2. This sensor is located downstream of the catalytic converter and plays a crucial role in monitoring the oxygen levels in the exhaust gases. The heater control circuit is responsible for ensuring the sensor reaches and maintains the optimal operating temperature for accurate readings.

OBDII Code P0037 2019 Ford F150 - HO2S Heater Control Circuit Low Bank 1 Sensor 2
P0037 2019 Ford F150 Code - HO2S Heater Control Circuit Low Bank 1 Sensor 2

Common Causes of P0037 2019 Ford F150

  1. Faulty HO2S Sensor: The oxygen sensor itself may be malfunctioning, causing the heater control circuit to operate outside of normal parameters.
  2. Wiring Issues: Damage or corrosion in the wiring harness connected to the sensor can disrupt the voltage supply to the heater circuit.
  3. Blown Fuse: A blown fuse in the heater circuit can also trigger this code, cutting off power to the sensor.
  4. ECM (Engine Control Module) Failure: A failure in the ECM, which controls the oxygen sensor's operation, can lead to the P0037 code.
  5. Exhaust Leak: An exhaust leak near the sensor can introduce false air into the system, affecting the sensor's readings.

Symptoms of P0037 2019 Ford F150

  1. Check Engine Light: The most common symptom associated with this code is the illumination of the check engine light on the vehicle's dashboard.
  2. Decreased Fuel Efficiency: A faulty HO2S heater control circuit can lead to poor fuel economy due to inaccurate oxygen sensor readings.
  3. Rough Idle: The engine may experience rough idling or hesitation during acceleration if the oxygen sensor is not functioning properly.
  4. Failed Emissions Test: The vehicle may fail emissions testing due to the inaccurate readings from the malfunctioning sensor.

How to Fix P0037 2019 Ford F150

  1. Diagnose the Issue: Use a diagnostic scanner to retrieve the specific code and pinpoint the exact cause of the problem.
  2. Inspect Wiring and Connections: Check the wiring harness and connections for any signs of damage, corrosion, or loose connections. Repair or replace as needed.
  3. Test Sensor and Heater Circuit: Test the oxygen sensor and the heater circuit to determine if they are functioning properly. Replace the sensor or heater if necessary.
  4. Check Fuse: Inspect the fuse related to the HO2S heater circuit and replace if blown.
  5. Clear Codes and Test Drive: Clear the DTC from the ECM memory after completing the repair, and test drive the vehicle to ensure the issue has been resolved.

Cost to Fix P0037 2019 Ford F150

The typical repair costs for addressing a P0037 code on a 2019 Ford F150 can vary depending on the specific cause of the issue. Generally, replacing the oxygen sensor or repairing wiring connections may cost between $200 to $500, including parts and labor. However, if the ECM needs to be replaced or additional repairs are necessary, the total cost could increase. It's recommended to consult with a professional technician or auto repair shop for a more accurate estimate based on the specific diagnosis and repair requirements. Keep in mind that labor rates can vary based on location, shop rates, and the complexity of the repair.

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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 2019 Ford F150 Code

1. What are the common symptoms of OBDII code P0037 in a 2019 Ford F150?

The common symptoms of code P0037 include poor fuel economy, rough idling, engine misfires, and the illumination of the Check Engine Light.

2. What does the HO2S Heater Control Circuit Low Bank 1 Sensor 2 mean in relation to OBDII code P0037?

The code P0037 indicates an issue with the heated oxygen sensor (HO2S) located on Bank 1, Sensor 2 of the exhaust system in a 2019 Ford F150.

3. What are the potential causes of OBDII code P0037 in a 2019 Ford F150?

Common causes of code P0037 include a faulty oxygen sensor, damaged wiring or connectors, a blown fuse, or issues with the engine control module (ECM).

4. How serious is OBDII code P0037 in a 2019 Ford F150?

While the vehicle may still be operable with code P0037, it is important to address the issue promptly to prevent potential damage to the catalytic converter and ensure optimal engine performance.

5. Can I continue driving my 2019 Ford F150 with OBDII code P0037?

It is not recommended to drive the vehicle extensively with code P0037 as it can lead to decreased fuel efficiency and potential long-term damage to the catalytic converter.

6. How can I diagnose and repair OBDII code P0037 on a 2019 Ford F150?

Diagnosing and repairing code P0037 typically involves testing the oxygen sensor, checking the wiring and connectors for damage, inspecting the fuse, and verifying the ECM's functionality.

7. Is it possible to reset OBDII code P0037 in a 2019 Ford F150 without fixing the underlying issue?

While you can clear the trouble code with an OBDII scanner, the Check Engine Light may reappear if the root cause of code P0037 is not addressed.

8. Are there any DIY repair tips for addressing OBDII code P0037 in a 2019 Ford F150?

DIY repair tips include checking for loose or damaged wiring, ensuring proper connection of the oxygen sensor, and inspecting the fuse related to the HO2S heater circuit.

9. How much does it typically cost to fix OBDII code P0037 in a 2019 Ford F150?

The cost of repairing code P0037 can vary depending on the exact cause of the issue, but it may range from $150 to $400 for parts and labor at a repair shop.

10. Can a faulty oxygen sensor trigger OBDII code P0037 in a 2019 Ford F150?

Yes, a faulty oxygen sensor on Bank 1, Sensor 2 can trigger code P0037, indicating a problem with the HO2S heater control circuit low.

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