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Engine-Codes – Generic – P014B

P014B Code - Oxygen Sensor Delayed Response Lean to Rich Bank 2 Sensor 2

Quick Answer

The diagnostic trouble code P014B indicates that there is a delayed response from the oxygen sensor located on Bank 2 Sensor 2 of the vehicle. 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
P014B indicates Oxygen Sensor Delayed Response Lean to Rich Bank 2 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.
What is this?
Table of contents Created and updated by William Orellana on Sep 11, 2024
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Code P014B Description

The diagnostic trouble code P014B indicates that there is a delayed response from the oxygen sensor located on Bank 2 Sensor 2 of the vehicle. This sensor is responsible for monitoring the oxygen levels in the exhaust gases after they have passed through the catalytic converter. A lean to rich condition means that the sensor is taking longer than expected to switch from a lean (oxygen-rich) exhaust to a rich (oxygen-poor) exhaust, which can affect the vehicle's performance and emissions.

OBDII Code P014B - Oxygen Sensor Delayed Response Lean to Rich Bank 2 Sensor 2
P014B Code - Oxygen Sensor Delayed Response Lean to Rich Bank 2 Sensor 2

Common Causes of P014B

  1. Faulty oxygen sensor
  2. Wiring or connector issues
  3. Exhaust leaks
  4. ECM malfunction
  5. Contaminated fuel

Symptoms of P014B

  1. Decreased fuel efficiency
  2. Rough idling or stalling
  3. Check Engine Light illuminated
  4. Poor acceleration or power loss
  5. Increased emissions levels

How to Fix P014B

  1. Diagnose the issue using a scan tool to confirm the P014B code and identify the root cause.
  2. Inspect the oxygen sensor, wiring, and connectors for any damage or corrosion.
  3. Repair or replace the oxygen sensor if it is faulty.
  4. Check for exhaust leaks and repair as necessary.
  5. Clear the fault code and perform a test drive to ensure the issue has been resolved.

Cost to Fix P014B

The cost of repairing a delayed response from the oxygen sensor on Bank 2 Sensor 2 can vary depending on the root cause of the issue and the cost of parts and labor. In general, the cost of replacing an oxygen sensor can range from $100 to $300, including parts and labor. Additional costs may be incurred if there are wiring or connector issues that need to be addressed. It is recommended to consult with a certified mechanic or auto repair shop for a more accurate estimate based on the specific make and model of the vehicle. Remember that labor rates can vary based on location and the type of repair facility.

What does this mean?

Tech Notes for P014B

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











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Code P014B Information for Specific Makes

  • P014B Buick — HO2S Delayed Response Lean to Rich Bank 2 Sensor 2
  • P014B Cadillac — HO2S Delayed Response Lean to Rich Bank 2 Sensor 2
  • P014B Chevrolet — HO2S Delayed Response Lean to Rich Bank 2 Sensor 2
  • P014B Ford — Oxygen Sensor Delayed Response Lean to Rich Bank 2 Sensor 2
  • P014B GMC — HO2S Delayed Response Lean to Rich Bank 2 Sensor 2
  • P014B Lincoln — Oxygen Sensor Delayed Response Lean to Rich Bank 2 Sensor 2
  • P014B Mercury — Oxygen Sensor Delayed Response Lean to Rich Bank 2 Sensor 2
  • P014B Pontiac — HO2S Delayed Response Lean to Rich Bank 2 Sensor 2
  • P014B Saturn — HO2S Delayed Response Lean to Rich Bank 2 Sensor 2
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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