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Engine-Codes – Generic – P140E

P140E Code - Exhaust Gas Recirculation Motor Control Circuit 2 High Voltage

Quick Answer

The P140E diagnostic trouble code (DTC) refers to an issue with the Exhaust Gas Recirculation (EGR) Motor Control Circuit 2 being detected as having high voltage. Common causes include Faulty EGR Motor: A malfunctioning EGR motor can cause high voltage in the EGR motor control circuit 2, Wiring Issues: Damaged or corroded wiring connections related to the EGR motor control circuit can lead to high voltage readings, ECM Malfunction: A problem with the engine control module (ECM) can disrupt the voltage regulation in the EGR motor control circuit. 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
P140E indicates Exhaust Gas Recirculation Motor Control Circuit 2 High Voltage.
Common causes
Common causes include Faulty EGR Motor: A malfunctioning EGR motor can cause high voltage in the EGR motor control circuit 2, Wiring Issues: Damaged or corroded wiring connections related to the EGR motor control circuit can lead to high voltage readings, ECM Malfunction: A problem with the engine control module (ECM) can disrupt the voltage regulation in the EGR motor control circuit.
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 Sep 15, 2024
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Code P140E Description

The P140E diagnostic trouble code (DTC) refers to an issue with the Exhaust Gas Recirculation (EGR) Motor Control Circuit 2 being detected as having high voltage. The EGR system is responsible for recirculating a portion of the exhaust gases back into the engine's intake manifold to reduce emissions and control combustion temperatures. The EGR motor control circuit 2 specifically controls the position of the EGR valve, which regulates the flow of exhaust gases into the intake system.

OBDII Code P140E - Exhaust Gas Recirculation Motor Control Circuit 2 High Voltage
P140E Code - Exhaust Gas Recirculation Motor Control Circuit 2 High Voltage

Common Causes of P140E

  1. Faulty EGR Motor: A malfunctioning EGR motor can cause high voltage in the EGR motor control circuit 2.
  2. Wiring Issues: Damaged or corroded wiring connections related to the EGR motor control circuit can lead to high voltage readings.
  3. ECM Malfunction: A problem with the engine control module (ECM) can disrupt the voltage regulation in the EGR motor control circuit.
  4. Vacuum Leaks: Vacuum leaks in the EGR system can affect the EGR valve's operation and contribute to high voltage readings.
  5. Carbon Build-Up: Accumulation of carbon deposits in the EGR system can obstruct the EGR valve's movement and trigger the P140E code.

Symptoms of P140E

  1. Check Engine Light: The most common symptom associated with the P140E code is the illumination of the check engine light on the vehicle's dashboard.
  2. Reduced Engine Performance: Drivers may notice a decrease in engine power or responsiveness due to improper EGR valve operation.
  3. Rough Idling: The engine may experience rough idling or stalling at idle speeds.
  4. Increased Fuel Consumption: High voltage in the EGR motor control circuit 2 can lead to increased fuel consumption as the engine may not be operating optimally.
  5. Emission Smell: There may be a noticeable smell of emissions or exhaust gases inside or outside the vehicle.

How to Fix P140E

  1. Diagnose the Issue: Use a diagnostic scanner to retrieve the DTC and perform a thorough inspection of the EGR system components, wiring, and connections.
  2. Test EGR Motor: Test the EGR motor for proper operation and voltage levels to determine if it needs replacement.
  3. Check Wiring: Inspect the wiring harness for any damage, corrosion, or loose connections. Repair or replace as necessary.
  4. Verify ECM Function: Verify the functionality of the engine control module by checking for any stored codes or performing a reflash if needed.
  5. Clean EGR System: Clean the EGR valve and passages to remove any carbon build-up that may be affecting its operation.

Cost to Fix P140E

The typical repair costs for addressing a P140E code can vary depending on the extent of the issue and the specific components that require replacement. On average, the parts for repairing the EGR system can range from $100 to $300, while labor costs may range from $150 to $300. Overall, the total repair cost for resolving a P140E code could fall between $250 and $600. It's important to note that these estimates are general and actual costs may differ based on the vehicle's make and model, the location of the repair shop, and any additional services required. It's recommended to consult with a qualified mechanic or service center to obtain a more accurate cost estimate for addressing the P140E code.

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Code P140E Information for Specific Makes

  • P140E Chevrolet — Exhaust Gas Recirculation Motor Control Circuit 2 High Voltage
  • P140E Ford — EGR Position Sensor 'C' Minimum/Maximum Stop Performance
  • P140E GMC — Exhaust Gas Recirculation Motor Control Circuit 2 High Voltage
  • P140E Lincoln — EGR Position Sensor 'C' Minimum/Maximum Stop Performance
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 P140E Code

1. What are the common symptoms of OBDII code P140E (Exhaust Gas Recirculation Motor Control Circuit 2 High Voltage)?

- Common symptoms include rough idling, reduced fuel efficiency, engine misfires, and the illumination of the check engine light.

2. What are some possible causes of OBDII code P140E?

- Potential causes of this code include a faulty EGR motor, damaged wiring or connectors in the EGR circuit, or a problem with the EGR control module.

3. How can I diagnose the issue related to code P140E?

- Diagnosing the issue involves using an OBDII scanner to retrieve the code, checking the EGR motor and related components for visible damage, and testing the wiring and connectors for continuity and proper voltage.

4. Can I continue driving my vehicle with OBDII code P140E?

- It is not recommended to continue driving your vehicle with this code as it can lead to further engine damage and reduced performance. It is best to address the issue promptly.

5. How can I repair OBDII code P140E?

- Repairing this code may involve replacing the EGR motor, repairing or replacing damaged wiring or connectors, or reprogramming the EGR control module. Consulting a professional mechanic is advised.

6. Are there any DIY tips for fixing OBDII code P140E?

- DIY tips include checking the EGR motor and related components for visible damage, ensuring proper wiring connections, and clearing the code with an OBDII scanner after any repairs.

7. What happens if OBDII code P140E is ignored?

- Ignoring this code can lead to decreased engine performance, increased emissions, and potential damage to other engine components over time. It is important to address the issue promptly.

8. Can a dirty EGR valve cause code P140E?

- While a dirty EGR valve can contribute to EGR-related issues, code P140E specifically relates to high voltage in the EGR motor control circuit 2, rather than a dirty valve.

9. Is it safe to drive with the check engine light on due to code P140E?

- It is generally safe to drive for a short distance with the check engine light on, but it is recommended to have the issue diagnosed and repaired as soon as possible to prevent further damage.

10. How much does it typically cost to repair OBDII code P140E at a repair shop?

- The cost of repairing OBDII code P140E can vary depending on the exact cause of the issue, but it may range from $150 to $500 at a repair shop, including parts and labor.

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