AutoCodes – GMC – P0059 2015 GMC Sierra

P0059 2015 GMC Sierra Code - HO2S Heater Resistance Bank 2 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 2 Sensor 1, Heated Oxygen Sensor Bank 2 Sensor 1 harness is open shorted, Heated Oxygen Sensor Bank 2 Sensor 1 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: P0059 2015 GMC Sierra indicates HO2S Heater Resistance Bank 2 Sensor 1.
Common causes: Common causes include Faulty Heated Oxygen Sensor (H2OS) Bank 2 Sensor 1, Heated Oxygen Sensor Bank 2 Sensor 1 harness is open shorted, Heated Oxygen Sensor Bank 2 Sensor 1 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 246

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Mar 25, 2024

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code P0059 2015 GMC Sierra 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 the HO2S heater is not within a specified resistance range at engine start-up.

OBDII Code P0059 2015 GMC Sierra - HO2S Heater Resistance Bank 2 Sensor 1 - AutoCodes.com — P0059 2015 GMC Sierra Code - HO2S Heater Resistance Bank 2 Sensor 1

What does this mean?

What are the Possible Causes of the DTC P0059 2015 GMC Sierra?

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

How to Fix the DTC P0059 2015 GMC Sierra?

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 P0059 2015 GMC Sierra 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 P0059 2015 GMC Sierra Code

1. What are the common symptoms of OBDII code P0059 in a 2015 GMC Sierra?

The common symptoms of OBDII code P0059 (HO2S Heater Resistance Bank 2 Sensor 1) in a 2015 GMC Sierra may include poor engine performance, reduced fuel efficiency, and illuminated check engine light.

2. What does the OBDII code P0059 in a 2015 GMC Sierra indicate?

OBDII code P0059 in a 2015 GMC Sierra indicates an issue with the heater circuit of the oxygen sensor located in Bank 2 Sensor 1.

3. What are the possible causes of OBDII code P0059 in a 2015 GMC Sierra?

Possible causes of OBDII code P0059 in a 2015 GMC Sierra include a faulty oxygen sensor, damaged wiring or connectors, a blown fuse, or an issue with the engine control module.

4. How can I diagnose OBDII code P0059 in my 2015 GMC Sierra?

Diagnosing OBDII code P0059 in a 2015 GMC Sierra involves using an OBDII scanner to retrieve the code, visually inspecting the oxygen sensor and related components, and testing the sensor's heater circuit for continuity.

5. Can I continue driving my 2015 GMC Sierra with OBDII code P0059?

It is not recommended to continue driving your 2015 GMC Sierra with OBDII code P0059, as it can lead to further engine damage and decreased fuel efficiency. It is best to address the issue promptly.

6. How can I repair OBDII code P0059 in my 2015 GMC Sierra?

To repair OBDII code P0059 in a 2015 GMC Sierra, you may need to replace the oxygen sensor in Bank 2 Sensor 1, repair any damaged wiring or connectors, check and replace any blown fuses, or address any issues with the engine control module.

7. Is it possible to reset OBDII code P0059 in a 2015 GMC Sierra without fixing the underlying issue?

While you can clear the code temporarily by resetting it, the underlying issue causing OBDII code P0059 in a 2015 GMC Sierra will persist. It is crucial to address the root cause of the problem to prevent the code from reappearing.

8. How much does it cost to repair OBDII code P0059 in a 2015 GMC Sierra?

The cost to repair OBDII code P0059 in a 2015 GMC Sierra can vary depending on the exact cause of the issue, the cost of parts, and labor charges. It is advisable to consult a professional mechanic for an accurate estimate.

9. Can a DIY enthusiast fix OBDII code P0059 in a 2015 GMC Sierra?

DIY enthusiasts with automotive repair knowledge and experience may be able to fix OBDII code P0059 in a 2015 GMC Sierra. However, it is essential to have the right tools, access to quality replacement parts, and follow proper repair procedures.

10. How often does OBDII code P0059 occur in a 2015 GMC Sierra?

OBDII code P0059 in a 2015 GMC Sierra is not a common occurrence but can happen due to various factors like sensor wear, electrical issues, or environmental conditions. Regular maintenance and prompt attention to check engine lights can help prevent this code from appearing.