AutoCodes – Chevrolet – P0031 2016 Chevrolet Silverado

P0031 2016 Chevrolet Silverado Code - HO2S Heater Control Circuit Low Voltage Bank 1 Sensor 1

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 1, Heated Oxygen Sensor Bank 1 Sensor 1 harness is open shorted to ground, Heated Oxygen Sensor Bank 1 Sensor 1 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
P0031 2016 Chevrolet Silverado indicates HO2S Heater Control Circuit Low Voltage Bank 1 Sensor 1.
Common causes
Common causes include Faulty Heated Oxygen Sensor (H2OS) Bank 1 Sensor 1, Heated Oxygen Sensor Bank 1 Sensor 1 harness is open shorted to ground, Heated Oxygen Sensor Bank 1 Sensor 1 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 415
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Mar 25, 2024
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Code P0031 2016 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 P0031 2016 Chevrolet Silverado - HO2S Heater Control Circuit Low Voltage Bank 1 Sensor 1 - AutoCodes.com
P0031 2016 Chevrolet Silverado Code - HO2S Heater Control Circuit Low Voltage Bank 1 Sensor 1

What are the Possible Causes of the DTC P0031 2016 Chevrolet Silverado?

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

How to Fix the DTC P0031 2016 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.

Code Tech Notes

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0031 2016 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.

Need more information about the P0031 2016 Chevrolet Silverado code?

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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 P0031 2016 Chevrolet Silverado Code

1. What does the OBDII code P0031 on a 2016 Chevrolet Silverado mean?

The code P0031 indicates an issue with the HO2S (Heated Oxygen Sensor) Heater Control Circuit on Bank 1 Sensor 1, showing low voltage.

2. What are the common symptoms of the P0031 code in a 2016 Chevrolet Silverado?

Common symptoms of the P0031 code may include poor fuel economy, rough idling, decreased engine performance, and the illumination of the Check Engine Light.

3. What are the possible causes of the P0031 code on a 2016 Chevrolet Silverado?

Potential causes of the P0031 code include a faulty oxygen sensor, damaged wiring or connectors, a blown fuse, or issues with the engine control module (ECM).

4. How can I diagnose the P0031 code on my 2016 Chevrolet Silverado?

Diagnosing the P0031 code involves checking the oxygen sensor's wiring and connectors, testing the sensor's resistance, inspecting the fuse, and scanning the ECM for related error codes.

5. How do I repair the HO2S Heater Control Circuit Low Voltage Bank 1 Sensor 1 issue on my 2016 Chevrolet Silverado?

To repair the P0031 code, you may need to replace the Bank 1 Sensor 1 oxygen sensor, repair any damaged wiring or connectors, replace blown fuses, or reprogram the ECM if necessary.

6. Can I continue driving my 2016 Chevrolet Silverado with the P0031 code present?

While the vehicle may still be operable with the P0031 code, it is recommended to address the issue promptly to prevent potential damage to the catalytic converter and ensure optimal engine performance.

7. How much does it cost to fix the P0031 code on a 2016 Chevrolet Silverado?

The cost of repairing the P0031 code can vary depending on the exact cause of the issue, but it may range from $100 to $300 for parts and labor.

8. Is it possible to reset the P0031 code on a 2016 Chevrolet Silverado without repairing the underlying issue?

While you can clear the code using an OBDII scanner, it is not recommended to simply reset the code without addressing the root cause, as the issue may persist and trigger the Check Engine Light again.

9. How often does the HO2S Heater Control Circuit Low Voltage Bank 1 Sensor 1 problem occur in 2016 Chevrolet Silverados?

The P0031 code related to the HO2S Heater Control Circuit Low Voltage Bank 1 Sensor 1 can occur sporadically in 2016 Chevrolet Silverados, often due to sensor wear or electrical issues over time.

10. Can a DIY enthusiast fix the P0031 code on a 2016 Chevrolet Silverado, or should I consult a professional mechanic?

Depending on your automotive repair skills and tools available, you may be able to address the P0031 code yourself by following proper diagnostic procedures and repair guidelines. However, consulting a professional mechanic is advisable for complex or uncertain cases to ensure accurate diagnosis and repair.

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