Engine-CodesGMC – P013A 2015 GMC Sierra

P013A 2015 GMC Sierra Code - HO2S Slow Response Rich to Lean Bank 1 Sensor 2

Quick Answer

The diagnostic trouble code P013A for a 2015 GMC Sierra indicates a HO2S (Heated Oxygen Sensor) slow response from rich to lean on Bank 1 Sensor 2. Common causes include Faulty oxygen sensor, Wiring or connector issues, Exhaust leaks. 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
P013A 2015 GMC Sierra indicates HO2S Slow Response Rich to Lean Bank 1 Sensor 2.
Common causes
Common causes include Faulty oxygen sensor, Wiring or connector issues, Exhaust leaks.
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 13, 2024
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Code P013A 2015 GMC Sierra Description

The diagnostic trouble code P013A for a 2015 GMC Sierra indicates a HO2S (Heated Oxygen Sensor) slow response from rich to lean on Bank 1 Sensor 2. This means that the oxygen sensor located downstream of the catalytic converter on the bank of cylinders that includes cylinder 1 is not responding quickly enough to changes in the air-fuel mixture from rich (too much fuel) to lean (too little fuel). The oxygen sensor plays a crucial role in monitoring and adjusting the air-fuel ratio to ensure optimal combustion efficiency and reduce harmful emissions.

OBDII Code P013A 2015 GMC Sierra - HO2S Slow Response Rich to Lean Bank 1 Sensor 2
P013A 2015 GMC Sierra Code - HO2S Slow Response Rich to Lean Bank 1 Sensor 2

Common Causes of P013A 2015 GMC Sierra

  1. Faulty oxygen sensor
  2. Wiring or connector issues
  3. Exhaust leaks
  4. Malfunctioning engine control module (ECM)
  5. Contaminated fuel affecting air-fuel mixture

Symptoms of P013A 2015 GMC Sierra

  1. Rough idling
  2. Hesitation during acceleration
  3. Decreased fuel efficiency
  4. Check Engine Light illuminated
  5. Failed emissions test

How to Fix P013A 2015 GMC Sierra

  1. Use an OBD-II scanner to confirm the P013A code and identify the specific oxygen sensor causing the issue.
  2. Inspect the oxygen sensor wiring and connectors for any damage or corrosion, repairing or replacing as needed.
  3. Check for exhaust leaks near the oxygen sensor and repair any leaks found.
  4. Replace the Bank 1 Sensor 2 oxygen sensor with a new, OEM-quality sensor.
  5. Clear the trouble code and perform a test drive to ensure the issue has been resolved.

Cost to Fix P013A 2015 GMC Sierra

The typical repair costs for addressing a P013A code on a 2015 GMC Sierra can range from $200 to $500, including parts and labor. However, specific diagnosis time and labor rates at auto repair shops can vary based on factors such as location, vehicle make and model, and engine type. It's advisable to check local rates for a more precise estimate. Keep in mind that rates in metropolitan areas or at dealerships may be higher, while independent shops often charge less.

Tech Notes for P013A 2015 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.

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