AutoCodes – Chevrolet – P0037 2017 Chevrolet Silverado

P0037 2017 Chevrolet Silverado Code - HO2S Heater Control Circuit Low Voltage Bank 1 Sensor 2

Quick Answer

Heated Oxygen Sensors (HO2S) are used for fuel control and post catalyst monitoring. Common causes include Faulty Heated Oxygen Sensor (H2OS) Bank 1 Sensor 2, Heated Oxygen Sensor Bank 1 Sensor 2 harness is open shorted to ground, Heated Oxygen Sensor Bank 1 Sensor 2 circuit poor electrical connection. 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 2017 Chevrolet Silverado indicates HO2S Heater Control Circuit Low Voltage Bank 1 Sensor 2.
Common causes: Common causes include Faulty Heated Oxygen Sensor (H2OS) Bank 1 Sensor 2, Heated Oxygen Sensor Bank 1 Sensor 2 harness is open shorted to ground, Heated Oxygen Sensor Bank 1 Sensor 2 circuit poor electrical connection.
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 289

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 Mar 25, 2024

Description
Step-by-Step Diagnostic Guide
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code P0037 2017 Chevrolet Silverado Description

Heated Oxygen Sensors (HO2S) are used for fuel control and post catalyst monitoring. Each HO2S compares the oxygen content of the surrounding air with the oxygen content in the exhaust stream. The HO2S must reach an operating temperature to provide an accurate voltage signal. A heating element inside the HO2S minimizes the time required for the sensors to reach operating temperature. Voltage is provided to the heater by an ignition voltage circuit through a fuse. With the engine running, the ground is provided to the heater by the HO2S heater low control circuit through a low side driver within the Engine Control Module (ECM). The ECM uses Pulse Width Modulation (PWM) to control the HO2S heater operation to maintain a specific HO2S operating temperature range.
The Diagnostic Trouble Code (DTC) will be set when the ECM detects a short to ground in the heater output low side driver circuit of the heated oxygen sensor when the heater is commanded OFF for greater than 5 s.

OBDII Code P0037 2017 Chevrolet Silverado - HO2S Heater Control Circuit Low Voltage Bank 1 Sensor 2 - AutoCodes.com — P0037 2017 Chevrolet Silverado Code - HO2S Heater Control Circuit Low Voltage Bank 1 Sensor 2

What does this mean?

What are the Possible Causes of the DTC P0037 2017 Chevrolet Silverado?

Faulty Heated Oxygen Sensor (H2OS) Bank 1 Sensor 2
Heated Oxygen Sensor Bank 1 Sensor 2 harness is open shorted to ground
Heated Oxygen Sensor Bank 1 Sensor 2 circuit poor electrical connection
Heated Oxygen Sensor Bank 1 Sensor 2 circuit fuse
Faulty Engine Control Module (ECM)

How to Fix the DTC P0037 2017 Chevrolet Silverado?

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. The control module monitors how long it takes the sensor to warm up and start sending an adequate signal. The code is set when the sensor is taking too long to warm up. Water getting inside the heated oxygen sensor connector can cause the heated oxygen sensor fuse to blow. Before replacing the sensor, check for the condition of the heated oxygen sensor fuse and connectors. If the fuse and connector are OK, replacing the O2 Sensor usually takes care of the problem.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0037 2017 Chevrolet Silverado 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 2017 Chevrolet Silverado Code

1. What does the OBDII code P0037 on a 2017 Chevrolet Silverado indicate?

The code P0037 indicates a problem with the HO2S (Heated Oxygen Sensor) Heater Control Circuit Low Voltage for Bank 1 Sensor 2.

2. What are common symptoms of OBDII code P0037 on a 2017 Chevrolet Silverado?

Common symptoms of P0037 may include poor fuel economy, rough idling, engine misfires, and an illuminated check engine light.

3. What causes the HO2S Heater Control Circuit Low Voltage Bank 1 Sensor 2 code on a 2017 Chevrolet Silverado?

Possible causes of P0037 include a faulty oxygen sensor, damaged wiring or connectors, a blown fuse, or issues with the vehicle's PCM (Powertrain Control Module).

4. How serious is the OBDII code P0037 on a 2017 Chevrolet Silverado?

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

5. Can I continue driving my 2017 Chevrolet Silverado with the P0037 code?

It is generally not recommended to drive the vehicle with a P0037 code present, as it can lead to reduced fuel efficiency and other performance issues. It is advisable to have the issue diagnosed and repaired as soon as possible.

6. How can I diagnose and repair the HO2S Heater Control Circuit Low Voltage Bank 1 Sensor 2 code on my 2017 Chevrolet Silverado?

Diagnosing P0037 typically involves checking the oxygen sensor, inspecting wiring and connectors for damage, testing fuses, and scanning the PCM for any related faults. Repair may involve replacing the oxygen sensor, repairing wiring, or addressing PCM issues.

7. Can a DIY enthusiast fix the P0037 code on a 2017 Chevrolet Silverado?

Depending on your skill level and access to tools, some DIY enthusiasts may be able to address the P0037 code by replacing the oxygen sensor or repairing damaged wiring. However, complex diagnostics and PCM-related issues may require professional assistance.

8. How much does it cost to repair the HO2S Heater Control Circuit Low Voltage Bank 1 Sensor 2 code on a 2017 Chevrolet Silverado?

The cost of repairing P0037 can vary based on the underlying issue, parts needed, and labor rates. It is recommended to obtain quotes from reputable mechanics or service centers for an accurate estimate.

9. Is it necessary to clear the P0037 code after repairing the issue on a 2017 Chevrolet Silverado?

After repairing the underlying problem causing the P0037 code, it is advisable to clear the code using an OBDII scanner to reset the check engine light and ensure the repair was successful.

10. How can I prevent the OBDII code P0037 from recurring on my 2017 Chevrolet Silverado?

To prevent the P0037 code from recurring, it is essential to address any underlying issues promptly, perform regular maintenance on the vehicle's oxygen sensors, and ensure proper care of the vehicle's electrical system.