AutoCodes – Chevrolet – P0037 2015 Chevrolet Silverado

P0037 2015 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 2015 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 730

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 2015 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 2015 Chevrolet Silverado - HO2S Heater Control Circuit Low Voltage Bank 1 Sensor 2 - AutoCodes.com — P0037 2015 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 2015 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 2015 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 2015 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 2015 Chevrolet Silverado Code

1. What does OBDII code P0037 on a 2015 Chevrolet Silverado mean?

- OBDII code P0037 indicates a problem with the HO2S (Heated Oxygen Sensor) heater control circuit low voltage for Bank 1 Sensor 2 on a 2015 Chevrolet Silverado.

2. What are common symptoms of OBDII code P0037 on a 2015 Chevrolet Silverado?

- Common symptoms of P0037 may include poor fuel economy, rough idling, engine misfires, and the illumination of the Check Engine Light.

3. What are possible causes of OBDII code P0037 on a 2015 Chevrolet Silverado?

- Causes of P0037 can 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 OBDII code P0037 on my 2015 Chevrolet Silverado?

- To diagnose P0037, you can use an OBDII scanner to retrieve the code, visually inspect the sensor and its wiring, check for blown fuses, and perform a voltage test on the sensor heater circuit.

5. Can I drive my 2015 Chevrolet Silverado with OBDII code P0037?

- While it may be possible to drive with P0037, it's not recommended as it can lead to reduced fuel efficiency and potential engine performance issues. It's best to address the problem promptly.

6. How do I repair OBDII code P0037 on my 2015 Chevrolet Silverado?

- Repairing P0037 may involve replacing the Bank 1 Sensor 2 oxygen sensor, repairing damaged wiring or connectors, checking and replacing fuses as needed, and resetting the fault code.

7. Are there any DIY tips for fixing OBDII code P0037 on a 2015 Chevrolet Silverado?

- DIY tips for P0037 include ensuring the vehicle is turned off before working on the sensor, carefully inspecting wiring for any visible damage, and consulting the vehicle's service manual for specific procedures.

8. Can a faulty oxygen sensor cause OBDII code P0037 on a 2015 Chevrolet Silverado?

- Yes, a faulty oxygen sensor, particularly Bank 1 Sensor 2, can trigger OBDII code P0037 due to issues with the heater control circuit's voltage.

9. Is OBDII code P0037 a common issue with 2015 Chevrolet Silverado vehicles?

- While not extremely common, OBDII code P0037 can occur in 2015 Chevrolet Silverado models due to various factors affecting the HO2S heater control circuit.

10. How long does it typically take to repair OBDII code P0037 on a 2015 Chevrolet Silverado?

- The repair time for P0037 can vary based on the exact cause of the issue and the expertise of the person performing the repair. It may take anywhere from 30 minutes to a couple of hours.