AutoCodesFord – P0037 2020 Ford F150

P0037 2020 Ford F150 Code - HO2S Heater Control Circuit Low Bank 1 Sensor 2

Quick Answer

The HO2S detects the presence of oxygen in the exhaust and produces a variable voltage according to the amount of oxygen detected. Common causes include Faulty Heated Oxygen Sensor Bank 1 Sensor 2 (HO2S12), Heated Oxygen Sensor Bank 1 Sensor 2 circuit open shorted to ground, Heated Oxygen Sensor Bank 1 Sensor 2 circuit poor electrical connection. 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 2020 Ford F150 indicates HO2S Heater Control Circuit Low Bank 1 Sensor 2.
Common causes
Common causes include Faulty Heated Oxygen Sensor Bank 1 Sensor 2 (HO2S12), Heated Oxygen Sensor Bank 1 Sensor 2 circuit open shorted to ground, Heated Oxygen Sensor Bank 1 Sensor 2 circuit poor electrical connection.
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.
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Code Popularity 317
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Sep 01, 2023
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Code P0037 2020 Ford F150 Description

The HO2S detects the presence of oxygen in the exhaust and produces a variable voltage according to the amount of oxygen detected. A high concentration of oxygen (lean air to fuel ratio) in the exhaust produces a voltage signal of less than 0.4 volt. A low concentration of oxygen (rich air to fuel ratio) produces a voltage signal greater than 0.6 volt. The HO2S provides feedback to the Powertrain Control Module (PCM) indicating air to fuel ratio in order to achieve a near stoichiometric air to fuel ratio of 14.7 to 1 (9 to 1 E100) during closed loop engine operation.
When the oxygen sensor is cold, disconnected, or on initial start-up, the voltage may read between 1.5 to 1.7 volts. The oxygen sensor voltage will decrease to the normal operating range of 0.0 to 1.1 volts during warm, stabilized engine running conditions.
The HO2S heater is embedded with a sensing element. The heating element heats the sensor to a temperature of 800°C (1,472°F). At approximately 300°C (572°F) the engine enters closed loop operation. The heater allows the engine to enter closed loop operation sooner.
The PCM controls the Heated Oxygen Sensor Bank 1, Sensor 2 (HO2S12) heater ON and OFF duty cycle to maintain a calibrated temperature. This Diagnostic Trouble Code (DTC) is set when the sensor does not warm up to the required temperature in a calibrated amount of time. This DTC is also set when the PCM is not able to maintain the required temperature after the sensor is warmed.
OBDII Code P0037 2020 Ford F150 - HO2S Heater Control Circuit Low Bank 1 Sensor 2 - AutoCodes.com
P0037 2020 Ford F150 Code - HO2S Heater Control Circuit Low Bank 1 Sensor 2

What are the Possible Causes of the DTC P0037 2020 Ford F150?

  • Faulty Heated Oxygen Sensor Bank 1 Sensor 2 (HO2S12)
  • Heated Oxygen Sensor Bank 1 Sensor 2 circuit open shorted to ground
  • Heated Oxygen Sensor Bank 1 Sensor 2 circuit poor electrical connection

How to Fix the DTC P0037 2020 Ford F150?

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 2020 Ford F150 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 2020 Ford F150 Code

1. What does the OBDII code P0037 on a 2020 Ford F150 mean?

- This code indicates a problem with the HO2S (Heated Oxygen Sensor) Heater Control Circuit being low for Bank 1 Sensor 2.

2. What are the common symptoms of OBDII code P0037 on a 2020 Ford F150?

- Common symptoms include poor fuel economy, rough idling, and an illuminated check engine light.

3. What are the possible causes of the P0037 code on a 2020 Ford F150?

- The code can be triggered by a faulty oxygen sensor, damaged wiring, a blown fuse, or issues with the PCM (Powertrain Control Module).

4. How serious is the P0037 code on a 2020 Ford F150?

- While the vehicle may still be operable with this code, it can lead to decreased fuel efficiency and potentially cause damage to the catalytic converter if left unresolved.

5. How can I diagnose the P0037 code on my 2020 Ford F150?

- Diagnosis typically involves inspecting the oxygen sensor, checking the wiring for damage, testing the sensor's heater circuit, and verifying the integrity of related fuses.

6. What are some repair tips for fixing the P0037 code on a 2020 Ford F150?

- Repair options may include replacing the oxygen sensor, repairing damaged wiring, replacing blown fuses, or addressing any issues with the PCM as needed.

7. Can I drive my 2020 Ford F150 with the P0037 code?

- It is generally not recommended to drive with this code present for an extended period, as it can impact the vehicle's performance and fuel efficiency.

8. How much does it cost to repair the P0037 code on a 2020 Ford F150?

- The cost of repair can vary depending on the exact cause of the issue, but it may range from $100 to $300 for parts and labor.

9. How long does it take to fix the P0037 code on a 2020 Ford F150?

- The repair time can vary based on the specific issue, but it may take anywhere from 1 to 3 hours to diagnose and fix the problem.

10. Can I clear the P0037 code on my 2020 Ford F150 with an OBDII scanner?

- Yes, you can use an OBDII scanner to clear the code, but it is important to address the underlying issue causing the code to prevent it from reoccurring.

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