AutoCodes – Ford – P140B Ford

P140B Ford 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 Ford 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 1,635

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

What does this mean?

What are the Possible Causes of the DTC P140B Ford?

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 Ford?

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 Ford 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 Ford code?

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

Need Help with the Code?

Get the P140B Ford 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 Ford Code

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

- Common symptoms include rough idling, engine hesitation, decreased fuel efficiency, and the illumination of the Check Engine light.

2. What does the OBDII code P140B for Ford indicate about the Exhaust Gas Recirculation (EGR) sensor 'C' circuit?

- The code signifies that the EGR sensor 'C' circuit is detecting a high voltage condition, indicating a potential issue with the sensor or its circuit.

3. What are some possible causes of the Exhaust Gas Recirculation sensor 'C' circuit high voltage issue in a Ford vehicle?

- Potential causes include a faulty EGR sensor, damaged wiring or connectors in the sensor circuit, a clogged EGR valve, or a problem with the engine control module (ECM).

4. How can I diagnose the OBDII code P140B related to the EGR sensor 'C' circuit in my Ford?

- To diagnose the issue, you can use an OBDII scanner to read the code, visually inspect the EGR sensor and its wiring for any visible damage, and perform electrical tests to pinpoint the problem.

5. What are the possible repair options for resolving the OBDII code P140B in a Ford vehicle?

- Repair options may include replacing the EGR sensor, repairing or replacing damaged wiring or connectors, cleaning or replacing the EGR valve, or reprogramming the ECM.

6. Is it safe to continue driving with the OBDII code P140B present in a Ford vehicle?

- It is not recommended to continue driving with the code active, as it can lead to poor engine performance and potentially cause further damage to the vehicle over time.

7. Can a DIY enthusiast fix the OBDII code P140B issue related to the EGR sensor 'C' circuit in a Ford?

- Depending on your skill level and access to tools, some DIY enthusiasts may be able to address the issue by replacing the EGR sensor or performing basic electrical repairs.

8. How long does it typically take to repair the OBDII code P140B pertaining to the EGR sensor 'C' circuit in a Ford?

- The repair time can vary based on the specific cause of the issue, but it may take anywhere from 1-3 hours for a professional mechanic to diagnose and fix the problem.

9. Are there any preventative maintenance tips to avoid encountering the OBDII code P140B in a Ford vehicle?

- Regularly servicing the EGR system, using high-quality fuel, and addressing any engine performance issues promptly can help prevent the occurrence of the code.

10. Will resetting the Check Engine light erase the OBDII code P140B in a Ford vehicle?

- Resetting the Check Engine light may temporarily clear the code, but if the underlying issue is not addressed, the code is likely to reappear. It's essential to diagnose and fix the root cause of the problem.