AutoCodesGMC – P013D 2014 GMC Sierra

P013D 2014 GMC Sierra Code - HO2S Slow Response Lean to Rich Bank 2 Sensor 2

Quick Answer

The Heated Oxygen Sensors (HO2S) are used for fuel control and catalyst monitoring. Common causes include Faulty Heated Oxygen Bank 2 Sensor 2, Heated Oxygen Bank 2 Sensor 2 harness is open or shorted, Heated Oxygen 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
P013D 2014 GMC Sierra indicates HO2S Slow Response Lean to Rich Bank 2 Sensor 2.
Common causes
Common causes include Faulty Heated Oxygen Bank 2 Sensor 2, Heated Oxygen Bank 2 Sensor 2 harness is open or shorted, Heated Oxygen 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 212
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on May 28, 2022
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Code P013D 2014 GMC Sierra Description

The Heated Oxygen Sensors (HO2S) are used for fuel control and catalyst monitoring. Each HO2S compares the oxygen content of the surrounding air with the oxygen content of the exhaust stream. When the engine is started, the Engine Control Module (ECM) operates in an Open Loop mode, ignoring the HO2S signal voltage while calculating the air-to-fuel ratio. While the engine runs, the HO2S heats up and begins to generate a voltage within a range of 0 - 1, 000 mV. Once sufficient HO2S voltage fluctuation is observed by the ECM, Closed Loop is entered. The ECM uses the HO2S voltage to determine the air-to-fuel ratio. An HO2S voltage that increases toward 1, 000 mV indicates a rich fuel mixture. An HO2S voltage that decreases toward 0 mV indicates a lean fuel mixture.
The heating elements inside each HO2S heat the sensor to bring the sensor up to operating conditions faster. This allows the system to enter Closed Loop earlier and the ECM to calculate the air-to-fuel ratio sooner.
The Diagnostic Trouble Code (DTC) will be set when the ECM detects that the accumulated mass airflow monitored during lean-to-rich transitions between 350 - 650 mV is greater than calibrated value.
OBDII Code P013D 2014 GMC Sierra - HO2S Slow Response Lean to Rich Bank 2 Sensor 2 - AutoCodes.com
P013D 2014 GMC Sierra Code - HO2S Slow Response Lean to Rich Bank 2 Sensor 2

What are the Possible Causes of the DTC P013D 2014 GMC Sierra?

  • Faulty Heated Oxygen Bank 2 Sensor 2
  • Heated Oxygen Bank 2 Sensor 2 harness is open or shorted
  • Heated Oxygen Bank 2 Sensor 2 circuit poor electrical connection
  • Low or high fuel system pressure
  • Fuel contamination
  • Faulty fuel injectors
  • Exhaust gas leaks
  • Engine vacuum leaks

How to Fix the DTC P013D 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.

Code Tech Notes

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P013D 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 P013D 2014 GMC Sierra Code

What does the OBDII code P013D mean for a 2014 GMC Sierra?

P013D indicates a slow response time of the downstream oxygen sensor (Bank 2, Sensor 2) when switching from a lean to a rich condition, suggesting it may not be functioning properly.

What are the symptoms of the P013D code in a 2014 GMC Sierra?

Symptoms may include the check engine light turning on, reduced fuel efficiency, poor engine performance, or no noticeable symptoms at all in some cases.

What causes the P013D code to appear?

Common causes include a failing downstream oxygen sensor, exhaust leaks, damaged wiring or connectors, or issues with the vehicle's PCM (Powertrain Control Module).

How can I diagnose the P013D code on my GMC Sierra?

Use a scan tool to confirm the code, visually inspect the oxygen sensor and wiring for damage, and check for exhaust leaks or other related issues near Bank 2.

Can I drive my 2014 GMC Sierra with the P013D code?

While the vehicle may still be drivable, it's not recommended to ignore the code as it can lead to reduced efficiency and potential long-term damage to the catalytic converter.

How do I fix the P013D code on a 2014 GMC Sierra?

Repairs typically involve replacing the downstream oxygen sensor for Bank 2, repairing any wiring issues, or fixing exhaust leaks if present.

How much does it cost to repair the P013D code?

Replacing an oxygen sensor typically costs between $150 and $300, depending on parts and labor rates. Additional repairs like fixing exhaust leaks may increase the cost.

Can a dirty air filter or fuel injector cause the P013D code?

While unlikely, issues with air or fuel delivery could potentially contribute to sensor response problems, so it’s worth inspecting these components.

How can I prevent the P013D code from recurring?

Regular maintenance, such as inspecting and replacing oxygen sensors as needed, checking for exhaust leaks, and addressing wiring issues promptly, can help prevent this code.

Does the P013D code affect emissions testing?

Yes, this code can cause your vehicle to fail an emissions test since it indicates a potential issue with the oxygen sensor or exhaust system.

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