AutoCodesGMC – P013F 2016 GMC Sierra

P013F 2016 GMC Sierra Code - HO2S Delay Response Lean to Rich Bank 1 Sensor 2

Quick Answer

The Heated Oxygen Sensors (HO2S) are used for fuel control and catalyst monitoring. Common causes include Faulty Heated Oxygen Bank 1 Sensor 2, Heated Oxygen Bank 1 Sensor 2 harness is open or shorted, Heated Oxygen Bank 1 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
P013F 2016 GMC Sierra indicates HO2S Delay Response Lean to Rich Bank 1 Sensor 2.
Common causes
Common causes include Faulty Heated Oxygen Bank 1 Sensor 2, Heated Oxygen Bank 1 Sensor 2 harness is open or shorted, Heated Oxygen Bank 1 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 145
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 P013F 2016 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 O2 sensor voltage has not increased above 350 mV within a calibrated value of accumulated airflow.
OBDII Code P013F 2016 GMC Sierra - HO2S Delay Response Lean to Rich Bank 1 Sensor 2 - AutoCodes.com
P013F 2016 GMC Sierra Code - HO2S Delay Response Lean to Rich Bank 1 Sensor 2

What are the Possible Causes of the DTC P013F 2016 GMC Sierra?

  • Faulty Heated Oxygen Bank 1 Sensor 2
  • Heated Oxygen Bank 1 Sensor 2 harness is open or shorted
  • Heated Oxygen Bank 1 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 P013F 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.

Code Tech Notes

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P013F 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 P013F 2016 GMC Sierra Code

1. What does the OBDII code P013F mean for a 2016 GMC Sierra?

P013F indicates that the downstream oxygen sensor (Bank 1 Sensor 2) is taking too long to switch from a lean to rich state, suggesting a delay in its response time.

2. What are the common symptoms of code P013F in a 2016 GMC Sierra?

Symptoms may include the check engine light turning on, reduced fuel efficiency, failed emissions tests, or no noticeable symptoms at all.

3. What causes the P013F code in a 2016 GMC Sierra?

Common causes include a faulty downstream oxygen sensor (Bank 1 Sensor 2), exhaust leaks, a damaged catalytic converter, wiring issues, or engine performance problems such as running too lean or rich.

4. How do I diagnose the P013F code in my GMC Sierra?

Start by inspecting the wiring and connections to the downstream oxygen sensor. Use a scan tool to monitor live data for sensor response times and check for exhaust leaks or other engine-related issues.

5. Can a faulty oxygen sensor trigger the P013F code?

Yes, a malfunctioning downstream oxygen sensor is one of the most common causes of the P013F code.

6. Is it safe to drive with a P013F code on my 2016 GMC Sierra?

While the vehicle may still be drivable, ignoring the code can lead to decreased fuel efficiency, possible damage to the catalytic converter, and failed emissions tests.

7. How can I fix the P013F code on my GMC Sierra?

Repairs may involve replacing the downstream oxygen sensor, fixing exhaust leaks, repairing damaged wiring, or addressing any engine performance issues.

8. How much does it cost to repair the P013F code?

Replacing an oxygen sensor typically costs between $150 and $300, including parts and labor. The cost may increase if additional repairs, such as fixing an exhaust leak, are required.

9. Can a dirty air filter cause the P013F code?

A dirty air filter can indirectly contribute to poor engine performance, which might affect oxygen sensor readings, but it is not a direct cause of the P013F code.

10. Will clearing the P013F code solve the problem?

Clearing the code may temporarily turn off the check engine light, but the underlying issue must be addressed to prevent the code from returning.

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