Engine-CodesGMC – P013C 2016 GMC Sierra

P013C 2016 GMC Sierra Code - HO2S Slow Response Rich to Lean Bank 2 Sensor 2

Quick Answer

The P013C diagnostic trouble code (DTC) for a 2016 GMC Sierra indicates a "HO2S Slow Response Rich to Lean Bank 2 Sensor 2" issue. Common causes include Faulty O2 sensor in Bank 2, Sensor 2, Wiring or connector issues, Exhaust leaks near the sensor. 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
P013C 2016 GMC Sierra indicates HO2S Slow Response Rich to Lean Bank 2 Sensor 2.
Common causes
Common causes include Faulty O2 sensor in Bank 2, Sensor 2, Wiring or connector issues, Exhaust leaks near the sensor.
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.
Table of contents Created and updated by William Orellana on Sep 16, 2024
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Code P013C 2016 GMC Sierra Description

The P013C diagnostic trouble code (DTC) for a 2016 GMC Sierra indicates a "HO2S Slow Response Rich to Lean Bank 2 Sensor 2" issue. This code specifically relates to the oxygen sensor (O2 sensor) located in Bank 2, Sensor 2 position of the vehicle's exhaust system. The O2 sensor is responsible for measuring the oxygen content in the exhaust gases and providing feedback to the engine control module (ECM) to adjust the air-fuel mixture for optimal combustion.

OBDII Code P013C 2016 GMC Sierra - HO2S Slow Response Rich to Lean Bank 2 Sensor 2
P013C 2016 GMC Sierra Code - HO2S Slow Response Rich to Lean Bank 2 Sensor 2

Common Causes of P013C 2016 GMC Sierra

  1. Faulty O2 sensor in Bank 2, Sensor 2
  2. Wiring or connector issues
  3. Exhaust leaks near the sensor
  4. Vacuum leaks affecting air-fuel mixture
  5. Fuel system problems such as a clogged fuel injector

Symptoms of P013C 2016 GMC Sierra

  1. Decreased fuel efficiency
  2. Rough idling or stalling
  3. Engine hesitation during acceleration
  4. Check Engine Light illuminated
  5. Increased emissions

How to Fix P013C 2016 GMC Sierra

  1. Use an OBD-II scanner to confirm the P013C code and identify the specific O2 sensor location.
  2. Inspect the wiring and connectors for any damage or corrosion, repairing or replacing as needed.
  3. Check for exhaust leaks near the sensor and repair them to ensure accurate readings.
  4. Test the O2 sensor's functionality using a multimeter or scan tool, replacing it if found to be faulty.
  5. Clear the DTC and perform a test drive to verify that the issue has been resolved.

Cost to Fix P013C 2016 GMC Sierra

The typical repair costs for addressing a P013C code on a 2016 GMC Sierra can range from $150 to $400, including parts and labor. However, actual costs may vary depending on the specific diagnosis time and labor rates at auto repair shops, which typically charge between $80 and $150 per hour. It's recommended to obtain quotes from local shops to get a more accurate estimate based on your location and vehicle specifics.

Tech Notes for P013C 2016 GMC Sierra

Replacing the Rear Heated Oxygen Sensors (HO2S) usually takes care of the problem.











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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 P013C 2016 GMC Sierra Code

1. What does the OBDII code P013C mean on a 2016 GMC Sierra?

P013C indicates that the Bank 2 Sensor 2 oxygen sensor is taking too long to switch from a rich to a lean condition, signaling a potential issue with the sensor or exhaust system.

2. What are the symptoms of code P013C in a 2016 GMC Sierra?

Common symptoms include a check engine light, reduced fuel efficiency, potential rough idling, and possibly failed emissions testing.

3. What causes the P013C code on a 2016 GMC Sierra?

The most common causes include a faulty downstream oxygen sensor (Bank 2 Sensor 2), exhaust leaks, wiring issues, or a buildup of contaminants on the sensor.

4. How do I diagnose a P013C code on a 2016 GMC Sierra?

Start by scanning for stored trouble codes, inspecting the oxygen sensor and its wiring for damage, checking for exhaust leaks, and monitoring live data for slow sensor response.

5. Can a dirty or clogged catalytic converter cause a P013C code?

Yes, a clogged or failing catalytic converter can affect the downstream oxygen sensor’s readings and trigger the P013C code.

6. Is it safe to drive a 2016 GMC Sierra with a P013C code?

While it may still be drivable, prolonged driving with this code can lead to reduced fuel efficiency and potential damage to the catalytic converter.

7. How do I fix the P013C code on a 2016 GMC Sierra?

Repairs may include replacing the faulty oxygen sensor, fixing exhaust leaks, cleaning or replacing the catalytic converter, or repairing damaged wiring or connectors.

8. How much does it cost to repair a P013C code on a 2016 GMC Sierra?

Repair costs vary, but replacing an oxygen sensor typically costs $150-$300, while fixing exhaust leaks or replacing a catalytic converter can be more expensive.

9. Can a bad oxygen sensor cause other problems besides the P013C code?

Yes, a bad oxygen sensor can lead to poor engine performance, reduced fuel economy, and potential damage to the catalytic converter over time.

10. How can I prevent the P013C code from recurring on my 2016 GMC Sierra?

Regular maintenance, using high-quality fuel, and promptly addressing exhaust system issues can help prevent this code from reappearing.

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