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Engine-Codes – GMC – P245D 2018 GMC Sierra

P245D 2018 GMC Sierra Code - Exhaust Gas Recirculation Cooler Bypass Control Circuit High Voltage

Quick Answer

The P245D diagnostic trouble code (DTC) for a 2018 GMC Sierra relates to the Exhaust Gas Recirculation (EGR) Cooler Bypass Control Circuit registering high voltage. Common causes include Faulty EGR cooler bypass control solenoid, Damaged wiring or connectors in the control circuit, Malfunctioning EGR cooler bypass valve. 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
P245D 2018 GMC Sierra indicates Exhaust Gas Recirculation Cooler Bypass Control Circuit High Voltage.
Common causes
Common causes include Faulty EGR cooler bypass control solenoid, Damaged wiring or connectors in the control circuit, Malfunctioning EGR cooler bypass valve.
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 15, 2024
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Code P245D 2018 GMC Sierra Description

The P245D diagnostic trouble code (DTC) for a 2018 GMC Sierra relates to the Exhaust Gas Recirculation (EGR) Cooler Bypass Control Circuit registering high voltage. The EGR system is crucial for reducing nitrogen oxide emissions by recirculating a portion of the exhaust gases back into the engine's intake system. The EGR cooler bypass control circuit is responsible for regulating the flow of exhaust gases through the EGR cooler, which helps to lower the temperature of the recirculated gases before they are reintroduced into the engine.

OBDII Code P245D 2018 GMC Sierra - Exhaust Gas Recirculation Cooler Bypass Control Circuit High Voltage
P245D 2018 GMC Sierra Code - Exhaust Gas Recirculation Cooler Bypass Control Circuit High Voltage

Common Causes of P245D 2018 GMC Sierra

  1. Faulty EGR cooler bypass control solenoid
  2. Damaged wiring or connectors in the control circuit
  3. Malfunctioning EGR cooler bypass valve
  4. Issues with the engine control module (ECM)

Symptoms of P245D 2018 GMC Sierra

  1. Reduced fuel efficiency
  2. Rough idling
  3. Engine misfires
  4. Stalling

How to Fix P245D 2018 GMC Sierra

  1. Begin by conducting a thorough inspection of the EGR cooler bypass control circuit, checking for any damaged wiring or connectors. Repair or replace any faulty components.
  2. Test the EGR cooler bypass control solenoid to ensure it is functioning correctly. Replace if necessary.
  3. Inspect the EGR cooler bypass valve for any signs of damage or malfunction. Clean or replace as needed.
  4. Use a diagnostic tool to reset the DTC and clear the code from the vehicle's ECM memory.
  5. Test drive the vehicle to ensure that the issue has been resolved and that the symptoms associated with the P245D code have been eliminated.

Cost to Fix P245D 2018 GMC Sierra

The typical repair costs for addressing the P245D code on a 2018 GMC Sierra can vary depending on the specific cause of the issue. In general, replacing a faulty EGR cooler bypass control solenoid or valve, along with any necessary wiring repairs, could range from $200 to $500 in parts and labor. However, the total cost may increase if additional components need to be replaced or if the ECM requires reprogramming. It's recommended to consult with a professional mechanic or dealership for a more accurate cost estimate based on the specific diagnosis and repair needs of your vehicle. Keep in mind that labor rates can vary between auto repair shops, so it's advisable to inquire about rates in your local area.

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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 P245D 2018 GMC Sierra Code

1. What are the common symptoms of OBDII code P245D in a 2018 GMC Sierra?

The common symptoms of code P245D include reduced engine performance, rough idling, and the illumination of the Check Engine Light.

2. What causes the Exhaust Gas Recirculation Cooler Bypass Control Circuit High Voltage in a 2018 GMC Sierra?

The most common causes of P245D in a 2018 GMC Sierra are a faulty EGR cooler bypass control solenoid, damaged wiring or connectors in the EGR system, or a malfunctioning EGR valve.

3. How serious is the P245D code in a 2018 GMC Sierra?

While the P245D code may not cause immediate drivability issues, it is important to address it promptly to prevent potential long-term damage to the engine or emission system.

4. Can I continue driving my 2018 GMC Sierra with the P245D code?

It is not recommended to drive your GMC Sierra with the P245D code illuminated, as it can lead to decreased fuel efficiency and potential damage to the engine or emission system over time.

5. How can I diagnose the P245D code in my 2018 GMC Sierra?

Diagnosing the P245D code involves using an OBDII scanner to retrieve the code, inspecting the EGR system components for any visible damage, and testing the EGR cooler bypass control circuit for proper voltage.

6. What are some repair tips for fixing the P245D code in a 2018 GMC Sierra?

Repair tips for addressing the P245D code include checking and repairing any damaged wiring or connectors in the EGR system, replacing the EGR cooler bypass control solenoid if faulty, and ensuring proper EGR valve operation.

7. How much does it cost to repair the P245D code in a 2018 GMC Sierra?

The cost of repairing the P245D code in a 2018 GMC Sierra can vary depending on the extent of the issue, but it may range from $200 to $500 for parts and labor.

8. Can a DIY enthusiast fix the P245D code in a 2018 GMC Sierra?

While some experienced DIY enthusiasts may be able to address the P245D code by following repair manuals and guides, it is recommended to consult a professional mechanic for proper diagnosis and repair.

9. Will resetting the OBDII code P245D in my 2018 GMC Sierra make it go away permanently?

Resetting the P245D code may temporarily turn off the Check Engine Light, but if the underlying issue causing the code is not fixed, the code is likely to reappear during driving.

10. How can regular maintenance help prevent the recurrence of the P245D code in a 2018 GMC Sierra?

Regular maintenance, such as inspecting and cleaning the EGR system components, checking for any signs of wear or damage, and following the manufacturer's recommended service schedule, can help prevent the recurrence of the P245D code in a 2018 GMC Sierra.

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