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P140F 2017 Chevrolet Silverado Code - Exhaust Gas Recirculation Motor Current Performance

Quick Answer

The P140F code refers to an issue with the Exhaust Gas Recirculation (EGR) system in the 2017 Chevrolet Silverado. Common causes include Faulty EGR motor or actuator, Electrical issues such as damaged wiring or connectors related to the EGR system, Blockages in the EGR passages due to carbon buildup. 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
P140F 2017 Chevrolet Silverado indicates Exhaust Gas Recirculation Motor Current Performance.
Common causes
Common causes include Faulty EGR motor or actuator, Electrical issues such as damaged wiring or connectors related to the EGR system, Blockages in the EGR passages due to carbon buildup.
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.
What is this?
Table of contents Created and updated by William Orellana on Oct 16, 2024
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Code P140F 2017 Chevrolet Silverado Description

The P140F code refers to an issue with the Exhaust Gas Recirculation (EGR) system in the 2017 Chevrolet Silverado. Specifically, it indicates that the EGR motor is not performing within the expected current range. The EGR system is crucial for reducing nitrogen oxide (NOx) emissions by recirculating a portion of the exhaust gases back into the engine's intake manifold. This process helps lower combustion temperatures and, consequently, reduces harmful emissions.

OBDII Code P140F 2017 Chevrolet Silverado - Exhaust Gas Recirculation Motor Current Performance
P140F 2017 Chevrolet Silverado Code - Exhaust Gas Recirculation Motor Current Performance

Common Causes of P140F 2017 Chevrolet Silverado

  1. Faulty EGR motor or actuator.
  2. Electrical issues such as damaged wiring or connectors related to the EGR system.
  3. Blockages in the EGR passages due to carbon buildup.
  4. Malfunctioning EGR control module or sensor.
  5. Vacuum leaks affecting the EGR system's operation.

Symptoms of P140F 2017 Chevrolet Silverado

  1. Rough idling or stalling of the engine.
  2. Decreased fuel efficiency and increased fuel consumption.
  3. Illuminated check engine light on the dashboard.
  4. Poor acceleration or reduced engine power.
  5. Increased emissions, which may lead to failing an emissions test.

How to Fix P140F 2017 Chevrolet Silverado

  1. Diagnostic Testing: Begin by using an OBD-II scanner to confirm the P140F code and check for any related codes that may provide additional insight into the issue.
  2. Visual Inspection: Inspect the EGR motor, wiring, and connectors for any visible damage or corrosion. Check for carbon buildup in the EGR passages.
  3. EGR Motor Replacement: If the EGR motor is found to be faulty, replace it with a new or refurbished unit. Ensure that the replacement part is compatible with the 2017 Chevrolet Silverado.
  4. Cleaning EGR Passages: If carbon buildup is present, clean the EGR passages to ensure unobstructed flow. This may involve removing the intake manifold for thorough cleaning.
  5. Recheck System Functionality: After repairs, clear the codes and perform a test drive to ensure the EGR system operates correctly and the P140F code does not return.

Cost to Fix P140F 2017 Chevrolet Silverado

The typical cost to repair a P140F code can range from $200 to $800, depending on the specific repairs needed. This estimate includes parts such as an EGR motor, which can cost between $100 and $300, and labor costs that may range from $80 to $150 per hour. The total repair time can vary, but it generally takes 2 to 4 hours for diagnosis and repair. It's important to note that labor rates can differ significantly based on location, vehicle make and model, and engine type. In metropolitan areas or at dealerships, rates may be higher, while independent shops often offer more competitive pricing. For a precise estimate, it is advisable to check local repair shop rates.

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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 P140F 2017 Chevrolet Silverado Code

1. What does the OBDII code P140F mean on a 2017 Chevrolet Silverado?

P140F indicates an issue with the Exhaust Gas Recirculation (EGR) motor's current performance, suggesting it is not operating within the expected parameters.

2. What are the common symptoms of the P140F code?

Symptoms may include reduced engine performance, poor fuel efficiency, rough idling, increased emissions, and the Check Engine Light turning on.

3. What causes the P140F code to appear?

Possible causes include a malfunctioning EGR motor, carbon buildup in the EGR system, faulty wiring or connectors, or issues with the powertrain control module (PCM).

4. How do I diagnose the P140F code on my 2017 Silverado?

Start by using an OBDII scanner to confirm the code. Then inspect the EGR motor, wiring, and connectors for damage, and check for carbon buildup in the EGR valve and passages.

5. Can I drive with the P140F code active?

Driving with this code is not recommended, as it can lead to reduced performance, increased emissions, and potential long-term engine damage if not addressed.

6. How do I fix the P140F code?

Repairs may involve cleaning or replacing the EGR valve, repairing damaged wiring or connectors, or replacing the EGR motor if it is faulty.

7. How much does it cost to repair the P140F code?

Repair costs vary but typically range from $150 to $600 depending on whether cleaning or replacement of the EGR valve or motor is needed.

8. Can a clogged EGR valve cause the P140F code?

Yes, carbon buildup or clogging in the EGR valve or passages can restrict airflow and trigger this code.

9. Does the P140F code affect emissions?

Yes, a malfunctioning EGR system can increase NOx emissions, potentially causing the vehicle to fail an emissions test.

10. Do I need to reprogram the PCM after fixing the P140F code?

In most cases, reprogramming the PCM is not necessary, but clearing the code with an OBDII scanner and performing a test drive to confirm the issue is resolved is recommended.

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