AutoCodes – GMC – P0050 2014 GMC Sierra

P0050 2014 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 2014 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 439

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 2014 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 2014 GMC Sierra - HO2S Heater Control Circuit Bank 2 Sensor 1 - AutoCodes.com — P0050 2014 GMC Sierra Code - HO2S Heater Control Circuit Bank 2 Sensor 1

What does this mean?

What are the Possible Causes of the DTC P0050 2014 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 2014 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 2014 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 2014 GMC Sierra Code

1. What does OBDII code P0050 for a 2014 GMC Sierra mean?

The code P0050 indicates a problem with the HO2S (Heated Oxygen Sensor) heater control circuit for Bank 2 Sensor 1 in a 2014 GMC Sierra.

2. What are the common symptoms of OBDII code P0050 in a 2014 GMC Sierra?

Common symptoms of P0050 may include poor fuel economy, failed emissions test, rough idle, engine misfires, or the illumination of the check engine light.

3. What are the possible causes of OBDII code P0050 in a 2014 GMC Sierra?

Possible causes of P0050 include a faulty oxygen sensor, damaged wiring or connectors in the sensor circuit, a blown fuse, or issues with the engine control module (ECM).

4. How can I diagnose the OBDII code P0050 in my 2014 GMC Sierra?

To diagnose P0050, you can use an OBDII scanner to retrieve the specific error code. Additionally, you can test the oxygen sensor's heater circuit, check for wiring issues, and inspect the sensor itself for any signs of damage.

5. Can I continue driving my 2014 GMC Sierra with the OBDII code P0050?

While the vehicle may still be operational with P0050, it's recommended to address the issue promptly to prevent potential damage to other engine components and ensure optimal performance.

6. How should I repair OBDII code P0050 in my 2014 GMC Sierra?

Repairing P0050 may involve replacing the oxygen sensor for Bank 2 Sensor 1, repairing or replacing damaged wiring or connectors, checking and replacing any blown fuses, and resetting the fault code with a scanner.

7. Is it possible to clear the OBDII code P0050 in my 2014 GMC Sierra by disconnecting the battery?

Disconnecting the battery may clear the code temporarily, but it's better to address the underlying issue causing P0050 to prevent the code from reoccurring.

8. Can a DIY enthusiast fix OBDII code P0050 in a 2014 GMC Sierra?

Depending on your skill level and access to tools, a DIY enthusiast may be able to address P0050 by following repair guides, but if unsure, it's recommended to seek professional help.

9. How much does it cost to fix OBDII code P0050 in a 2014 GMC Sierra at a repair shop?

The cost of fixing P0050 can vary based on the root cause, the need for parts replacement, and labor costs. It's advisable to get estimates from different repair shops for an accurate cost.

10. How long does it take to repair OBDII code P0050 in a 2014 GMC Sierra?

The repair time for P0050 can vary depending on the specific issue, the availability of parts, and the expertise of the technician. In general, it may take a few hours to a day for the repair to be completed.