AutoCodes – Lincoln – P014A Lincoln

P014A Lincoln Code - Oxygen Sensor Delayed Response Rich to Lean Bank 2 Sensor 2

Quick Answer

During a Deceleration Fuel Shut-Off (DFSO) event, the Powertrain Control Module (PCM) monitors the rear heated oxygen sensor (HO2S) signal to determine if the signal is stuck in range. Common causes include Faulty Heated Oxygen Bank 2 Sensor 2, Heated Oxygen Bank 2 Sensor 2 harness is open or shorted, Heated Oxygen Bank 2 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: P014A Lincoln indicates Oxygen Sensor Delayed Response Rich to Lean Bank 2 Sensor 2.
Common causes: Common causes include Faulty Heated Oxygen Bank 2 Sensor 2, Heated Oxygen Bank 2 Sensor 2 harness is open or shorted, Heated Oxygen Bank 2 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 2,111

How popular is this code, among other codes? Low

Repair Importance Level

Moderate (Service soon) (2 / 3)

Repair Difficulty Level

Intermediate (2 / 3)

What is this?

Table of contents Created and updated by William Orellana on Apr 13, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P014A Lincoln Description

During a Deceleration Fuel Shut-Off (DFSO) event, the Powertrain Control Module (PCM) monitors the rear heated oxygen sensor (HO2S) signal to determine if the signal is stuck in range. The PCM expects the signal to exceed a calibrated rich or lean value within a calibrated amount of time. If the signal voltage remains less than the rich value after a number of occurrences, the PCM intrusively controls the fuel system rich over increasing time periods in an attempt to force the signal to greater than the calibrated rich value. The test fails when, after three consecutive intrusive attempts, the signal cannot be forced greater than the calibrated rich value. Also, if the signal voltage remains greater than the lean value after a calibrated amount of time with the fuel injectors off, a counter is incremented. The test fails when after three consecutive occurrences the signal is not less than the calibrated lean value.

OBDII Code P014A Lincoln - Oxygen Sensor Delayed Response Rich to Lean Bank 2 Sensor 2 - AutoCodes.com — P014A Lincoln Code - Oxygen Sensor Delayed Response Rich to Lean Bank 2 Sensor 2

What does this mean?

What are the Possible Causes of the DTC P014A Lincoln?

Faulty Heated Oxygen Bank 2 Sensor 2
Heated Oxygen Bank 2 Sensor 2 harness is open or shorted
Heated Oxygen Bank 2 Sensor 2 circuit poor electrical connection
Inappropriate fuel pressure
Faulty fuel injectors
Exhaust leaks before or near the Heated Oxygen Bank 2 Sensor 2

How to Fix the DTC P014A Lincoln?

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.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P014A Lincoln 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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Need Help with the Code?

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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 P014A Lincoln Code

What does the OBDII code P014A mean on a Lincoln?

P014A indicates that the oxygen sensor in Bank 2 Sensor 2 is responding too slowly when switching from a rich to lean condition.

What are the common symptoms of a P014A code?

Symptoms include an illuminated check engine light, reduced fuel efficiency, poor engine performance, and possibly a failed emissions test.

What causes the P014A code to appear?

Common causes include a faulty downstream oxygen sensor, exhaust leaks, wiring issues, or contamination of the oxygen sensor by oil or coolant.

How do I know which oxygen sensor is Bank 2 Sensor 2?

Bank 2 is the side of the engine opposite Bank 1 (usually the side without cylinder 1), and Sensor 2 is the downstream sensor located after the catalytic converter.

Can I drive my Lincoln with a P014A code?

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

How do you fix the P014A code?

Repairs may involve replacing the faulty oxygen sensor, fixing exhaust leaks, repairing damaged wiring, or addressing any contamination issues.

What tools are needed to diagnose a P014A code?

A diagnostic scanner, a multimeter, and an oxygen sensor socket are commonly used tools for diagnosing this code.

Can a dirty or clogged catalytic converter cause a P014A code?

Yes, a restricted catalytic converter can disrupt exhaust flow and cause delayed sensor response, potentially triggering the code.

How much does it cost to fix a P014A code on a Lincoln?

Repair costs vary but typically range from $150 to $400, depending on whether the oxygen sensor needs replacement or other issues like wiring or exhaust leaks are involved.

Will clearing the code with a scanner fix the problem?

Clearing the code will remove it temporarily, but the underlying issue must be addressed to prevent the code from returning.