AutoCodes – GMC – P0050 2016 GMC Sierra

P0050 2016 GMC Sierra Code - HO2S Heater Control Circuit 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 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: P0050 2016 GMC Sierra indicates HO2S Heater Control Circuit 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: 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 287

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 P0050 2016 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 an open circuit 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 P0050 2016 GMC Sierra - HO2S Heater Control Circuit Bank 2 Sensor 1 - AutoCodes.com — P0050 2016 GMC Sierra Code - HO2S Heater Control Circuit Bank 2 Sensor 1

What does this mean?

What are the Possible Causes of the DTC P0050 2016 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 fuse
Faulty Engine Control Module (ECM)

How to Fix the DTC P0050 2016 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 P0050 2016 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 P0050 2016 GMC Sierra Code

1. What does the OBDII code P0050 for a 2016 GMC Sierra mean?

The code P0050 indicates a problem with the HO2S (Heated Oxygen Sensor) Heater Control Circuit for Bank 2 Sensor 1 in the vehicle's exhaust system.

2. What are the common symptoms of OBDII code P0050 in a 2016 GMC Sierra?

Common symptoms of P0050 may include poor fuel economy, rough idling, engine misfires, and potential issues with emissions.

3. What are the possible causes of OBDII code P0050 in a 2016 GMC Sierra?

Possible causes of P0050 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 OBDII code P0050 in my 2016 GMC Sierra?

To diagnose P0050, you can use an OBDII scanner to read the code, visually inspect the oxygen sensor and its connections, test the sensor's heater circuit, and check for any blown fuses related to the sensor.

5. Is it safe to continue driving with OBDII code P0050 in a 2016 GMC Sierra?

It is not recommended to drive with the P0050 code present, as it can lead to decreased fuel efficiency and potential damage to the catalytic converter over time.

6. Can I repair OBDII code P0050 in my 2016 GMC Sierra myself?

Depending on your skill level, you may be able to repair P0050 yourself by replacing the oxygen sensor, checking and repairing any damaged wiring or connectors, or replacing a blown fuse.

7. How much does it typically cost to fix OBDII code P0050 in a 2016 GMC Sierra?

The cost of fixing P0050 can vary depending on the root cause of the issue. Repairs may range from $100 to $300 or more, including parts and labor.

8. Will resetting the OBDII code P0050 in a 2016 GMC Sierra make it go away permanently?

Simply resetting the code may temporarily clear the warning light, but if the underlying issue causing P0050 is not addressed, the code is likely to reappear.

9. How urgent is it to address OBDII code P0050 in a 2016 GMC Sierra?

While P0050 may not cause immediate harm to your vehicle, it is advisable to address the issue promptly to prevent potential damage to other components and maintain optimal performance.

10. Can a malfunctioning HO2S heater circuit affect the overall performance of a 2016 GMC Sierra?

Yes, a malfunctioning HO2S heater circuit can impact the engine's fuel-air mixture, emissions output, and overall performance of a 2016 GMC Sierra, leading to reduced efficiency and potential drivability issues.