AutoCodesChevrolet – P013A 2015 Chevrolet Silverado

P013A 2015 Chevrolet Silverado Code - HO2S Slow Response Rich to Lean 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
P013A 2015 Chevrolet Silverado indicates HO2S Slow Response Rich to Lean 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 896
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 P013A 2015 Chevrolet Silverado 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 rich-to-lean transitions between 450 - 150 mV is greater than calibrated value.
OBDII Code P013A 2015 Chevrolet Silverado - HO2S Slow Response Rich to Lean Bank 1 Sensor 2 - AutoCodes.com
P013A 2015 Chevrolet Silverado Code - HO2S Slow Response Rich to Lean Bank 1 Sensor 2

What are the Possible Causes of the DTC P013A 2015 Chevrolet Silverado?

  • 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 P013A 2015 Chevrolet Silverado?

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 P013A 2015 Chevrolet Silverado 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 P013A 2015 Chevrolet Silverado Code

What does the OBDII code P013A mean on a 2015 Chevrolet Silverado?

P013A indicates that the downstream oxygen sensor (Bank 1, Sensor 2) is detecting a slow response when switching from a rich to a lean air-fuel mixture.

What are the symptoms of code P013A on a 2015 Chevrolet Silverado?

Symptoms may include an illuminated check engine light, decreased fuel efficiency, and possibly a failed emissions test.

What causes the P013A code to appear on a 2015 Chevrolet Silverado?

Common causes include a faulty downstream oxygen sensor, exhaust leaks, damaged wiring or connectors, or issues with the catalytic converter.

Can you drive a 2015 Chevrolet Silverado with the P013A code?

It’s generally safe to drive short-term, but ignoring the issue may lead to further damage, reduced performance, or increased emissions.

How can you diagnose the P013A code on a 2015 Chevrolet Silverado?

Diagnosis involves checking the oxygen sensor's performance with a scan tool, inspecting wiring and connectors, and looking for exhaust leaks or catalytic converter issues.

How do you fix the P013A code on a 2015 Chevrolet Silverado?

The fix could involve replacing the downstream oxygen sensor, repairing damaged wiring, sealing any exhaust leaks, or replacing the catalytic converter if necessary.

How much does it cost to repair the P013A code on a 2015 Chevrolet Silverado?

Replacing an oxygen sensor typically costs $150-$300, while repairing wiring or exhaust leaks could vary. Replacing a catalytic converter could cost $1,000 or more.

Can a dirty air filter cause the P013A code on a 2015 Chevrolet Silverado?

A dirty air filter is unlikely to cause this code directly, but poor air intake could contribute to air-fuel ratio issues, indirectly affecting sensor readings.

Is the P013A code related to emissions on a 2015 Chevrolet Silverado?

Yes, this code is directly related to the emissions system, as it involves the oxygen sensor and catalytic converter performance.

How can you prevent the P013A code on a 2015 Chevrolet Silverado?

Regular maintenance, including inspecting oxygen sensors, checking for exhaust leaks, and addressing issues promptly, can help prevent this code.

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