AutoCodes – GMC – P0057 2015 GMC Sierra

P0057 2015 GMC Sierra Code - HO2S Heater Control Circuit Low Voltage Bank 2 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 2 Sensor 2, Heated Oxygen Sensor Bank 2 Sensor 2 harness is open shorted, Heated Oxygen Sensor Bank 2 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: P0057 2015 GMC Sierra indicates HO2S Heater Control Circuit Low Voltage Bank 2 Sensor 2.
Common causes: Common causes include Faulty Heated Oxygen Sensor (H2OS) Bank 2 Sensor 2, Heated Oxygen Sensor Bank 2 Sensor 2 harness is open shorted, Heated Oxygen Sensor Bank 2 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 315

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
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code P0057 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 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 P0057 2015 GMC Sierra - HO2S Heater Control Circuit Low Voltage Bank 2 Sensor 2 - AutoCodes.com — P0057 2015 GMC Sierra Code - HO2S Heater Control Circuit Low Voltage Bank 2 Sensor 2

What does this mean?

What are the Possible Causes of the DTC P0057 2015 GMC Sierra?

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

How to Fix the DTC P0057 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 P0057 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 P0057 2015 GMC Sierra Code

1. What are common symptoms of OBDII code P0057 in a 2015 GMC Sierra?

The common symptoms of code P0057 include poor fuel economy, rough idling, engine misfires, and the illumination of the check engine light.

2. What does the OBDII code P0057 "HO2S Heater Control Circuit Low Voltage Bank 2 Sensor 2" mean for a 2015 GMC Sierra?

Code P0057 indicates that there is a low voltage condition in the heater control circuit of the oxygen sensor located in bank 2 sensor 2 of the vehicle.

3. What are the potential causes of OBDII code P0057 in a 2015 GMC Sierra?

Possible causes of code P0057 include a faulty oxygen sensor, damaged wiring or connectors in the sensor circuit, a blown fuse, or a problem with the engine control module (ECM).

4. How can I diagnose the OBDII code P0057 in my 2015 GMC Sierra?

Diagnosing code P0057 involves checking the oxygen sensor's wiring and connections for damage, testing the sensor's heater element for proper function, inspecting the fuse related to the sensor circuit, and scanning the ECM for any related fault codes.

5. Can I continue driving my 2015 GMC Sierra with OBDII code P0057?

It is not recommended to continue driving with code P0057 unresolved, as it can lead to decreased fuel efficiency, engine performance issues, and potential damage to the catalytic converter over time.

6. How can I repair OBDII code P0057 in my 2015 GMC Sierra?

Repairing code P0057 typically involves replacing the oxygen sensor in bank 2 sensor 2, repairing any damaged wiring or connectors, checking and replacing any blown fuses, and clearing the fault code from the ECM.

7. How much does it cost to fix OBDII code P0057 in a 2015 GMC Sierra?

The cost of fixing code P0057 can vary depending on the root cause of the issue, the cost of parts needed for repair, and labor charges from a mechanic. It is advisable to get a diagnostic and repair estimate from a trusted automotive professional.

8. Can a DIY enthusiast repair OBDII code P0057 in a 2015 GMC Sierra?

While some enthusiasts may have the skills to diagnose and repair code P0057 themselves, it is recommended to have proper knowledge and tools to work on the vehicle's electrical systems. If unsure, seeking help from a qualified mechanic is advisable.

9. How long does it take to repair OBDII code P0057 in a 2015 GMC Sierra?

The repair time for code P0057 can vary depending on the exact cause of the issue and the complexity of the repair. It can range from a quick fix involving a fuse replacement to a more involved process of replacing the oxygen sensor and repairing wiring.

10. Will resetting the check engine light resolve OBDII code P0057 in a 2015 GMC Sierra?

Simply resetting the check engine light without addressing the underlying issue causing code P0057 will not solve the problem. It is essential to diagnose the root cause of the fault code and perform the necessary repairs to prevent the issue from recurring.