AutoCodes – Lincoln – P140B Lincoln

P140B Lincoln Code - Exhaust Gas Recirculation Sensor 'C' Circuit High

Quick Answer

The Powertrain Control Module (PCM) monitors the Exhaust Gas Recirculation (EGR) Sensor. Common causes include Faulty Exhaust Gas Recirculation (EGR) Sensor, Exhaust Gas Recirculation (EGR) Sensor harness is open or shorted, Exhaust Gas Recirculation (EGR) Sensor circuit poor electrical connection. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means: P140B Lincoln indicates Exhaust Gas Recirculation Sensor 'C' Circuit High.
Common causes: Common causes include Faulty Exhaust Gas Recirculation (EGR) Sensor, Exhaust Gas Recirculation (EGR) Sensor harness is open or shorted, Exhaust Gas Recirculation (EGR) Sensor circuit poor electrical connection.
Severity: High - diagnose this code as soon as possible.
Can I drive?: Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

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Code Popularity 1,158

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Sep 24, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P140B Lincoln Description

The Powertrain Control Module (PCM) monitors the Exhaust Gas Recirculation (EGR) Sensor. The PCM sets the OBDII code when the Exhaust Gas Recirculation Sensor is not to factory specifications.

OBDII Code P140B Lincoln - Exhaust Gas Recirculation Sensor 'C' Circuit High - AutoCodes.com — P140B Lincoln Code - Exhaust Gas Recirculation Sensor 'C' Circuit High

What does this mean?

What are the Possible Causes of the DTC P140B Lincoln?

Faulty Exhaust Gas Recirculation (EGR) Sensor
Exhaust Gas Recirculation (EGR) Sensor harness is open or shorted
Exhaust Gas Recirculation (EGR) Sensor circuit poor electrical connection

How to Fix the DTC P140B 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 P140B 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.

Need more information about the P140B Lincoln code?

Need more information on how to fix the P140B Lincoln code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P140B Lincoln code diagnosed by a professional: Find a repair shop in your area

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 P140B Lincoln Code

1. What are the common symptoms of OBDII code P140B in a Lincoln vehicle?

- Common symptoms include rough idling, decreased engine performance, stalling, and the illumination of the Check Engine Light.

2. What does the OBDII code P140B in a Lincoln indicate about the Exhaust Gas Recirculation (EGR) Sensor 'C' Circuit?

- This code indicates that the EGR Sensor 'C' Circuit is detecting a high voltage condition, typically caused by a malfunction in the sensor or its circuitry.

3. What are the possible causes of OBDII code P140B in a Lincoln related to the EGR Sensor 'C' Circuit?

- Possible causes include a faulty EGR sensor, damaged wiring or connectors in the circuit, a clogged EGR valve, or issues with the PCM (Powertrain Control Module).

4. How can I diagnose the OBDII code P140B in a Lincoln related to the EGR Sensor 'C' Circuit?

- Diagnosis typically involves using a scan tool to retrieve the trouble codes, testing the EGR sensor and its circuit for proper voltage and continuity, and inspecting the EGR valve for any obstructions.

5. Can I drive my Lincoln with OBDII code P140B present?

- It is not recommended to drive with this code present, as it can lead to decreased fuel efficiency, engine performance issues, and potential damage to other components over time.

6. How can I repair OBDII code P140B in a Lincoln related to the EGR Sensor 'C' Circuit?

- Repair methods may include replacing the EGR sensor, repairing or replacing damaged wiring or connectors, cleaning or replacing the EGR valve, and clearing the trouble codes with a scan tool.

7. Will resetting the Check Engine Light make OBDII code P140B go away permanently?

- Resetting the Check Engine Light without addressing the underlying issue causing code P140B will not make the problem go away permanently. The issue must be diagnosed and repaired to prevent the code from returning.

8. Are there any maintenance tips to prevent OBDII code P140B from occurring in a Lincoln?

- Regularly servicing the EGR system, including cleaning the EGR valve and ensuring proper wiring connections, can help prevent issues that may trigger code P140B.

9. Can a DIY enthusiast with basic automotive knowledge repair OBDII code P140B in a Lincoln?

- Depending on the cause of the code, a DIY enthusiast with basic automotive knowledge may be able to address issues like cleaning the EGR valve or checking wiring connections. However, more complex repairs may require professional assistance.

10. Is it necessary to have OBDII code P140B in a Lincoln repaired immediately?

- While the vehicle may still be operable with this code present, it is advisable to address it promptly to prevent potential damage to other components and ensure optimal engine performance.