AutoCodesChevrolet – P245A 2018 Chevrolet Silverado

P245A 2018 Chevrolet Silverado Code - Exhaust Gas Recirculation Cooler Bypass Control Circuit

Quick Answer

The Engine Control Module (ECM) uses the Exhaust Gas Recirculation (EGR) bypass valve position sensor to determine the position of the bypass valve. Common causes include Faulty Exhaust Gas Recirculation (EGR) Cooler Bypass Valve, Exhaust Gas Recirculation Cooler Bypass Valve harness is open or shorted, Exhaust Gas Recirculation Cooler Bypass Valve circuit poor electrical connection. 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
P245A 2018 Chevrolet Silverado indicates Exhaust Gas Recirculation Cooler Bypass Control Circuit.
Common causes
Common causes include Faulty Exhaust Gas Recirculation (EGR) Cooler Bypass Valve, Exhaust Gas Recirculation Cooler Bypass Valve harness is open or shorted, Exhaust Gas Recirculation Cooler Bypass Valve circuit poor electrical connection.
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.
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Code Popularity 265
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Sep 30, 2022
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Code P245A 2018 Chevrolet Silverado Description

The Engine Control Module (ECM) uses the Exhaust Gas Recirculation (EGR) bypass valve position sensor to determine the position of the bypass valve. The ECM sends a reference voltage through the 5-volt reference circuit to the position sensor. The ECM provides a voltage return path for the sensor through the low reference circuit. A variable voltage signal, based on the valve position, is sent from the sensor to the ECM through the position sensor signal circuit. The ECM compares the actual bypass valve position with the desired bypass valve position when the valve is commanded open or closed. The EGR cooler bypass valve is controlled by the ECM through the bypass valve motor high control and the low control circuits. The ECM will pulse width modulate the low control circuit to ground when EGR cooler bypass is desired.
The Diagnostic Trouble Code (DTC) will be set when the ECM detects an open circuit condition of the EGR cooler bypass valve control circuit for greater than 3 s.
OBDII Code P245A 2018 Chevrolet Silverado - Exhaust Gas Recirculation Cooler Bypass Control Circuit - AutoCodes.com
P245A 2018 Chevrolet Silverado Code - Exhaust Gas Recirculation Cooler Bypass Control Circuit

What are the Possible Causes of the DTC P245A 2018 Chevrolet Silverado?

  • Faulty Exhaust Gas Recirculation (EGR) Cooler Bypass Valve
  • Exhaust Gas Recirculation Cooler Bypass Valve harness is open or shorted
  • Exhaust Gas Recirculation Cooler Bypass Valve circuit poor electrical connection
  • Faulty Engine Control Module (ECM)

How to Fix the DTC P245A 2018 Chevrolet Silverado?

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 P245A 2018 Chevrolet Silverado 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 P245A 2018 Chevrolet Silverado code?

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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 P245A 2018 Chevrolet Silverado Code

1. What does the OBDII code P245A mean on a 2018 Chevrolet Silverado?

P245A indicates a problem with the Exhaust Gas Recirculation (EGR) Cooler Bypass Control Circuit, which manages the flow of exhaust gases in the EGR system.

2. What are the symptoms of code P245A in a 2018 Chevrolet Silverado?

Symptoms may include reduced engine performance, increased emissions, poor fuel economy, and the Check Engine Light being illuminated.

3. What causes the P245A code to appear?

Common causes include a faulty EGR cooler bypass valve, wiring or connector issues in the bypass control circuit, or a failed EGR system sensor.

4. Can I drive my 2018 Chevrolet Silverado with a P245A code?

While the vehicle may still be drivable, it’s not recommended as prolonged operation with this issue can lead to increased emissions and potential engine damage.

5. How do I diagnose the P245A code?

Diagnose the code by checking for damaged wiring or connectors in the EGR cooler bypass circuit, testing the bypass valve for proper operation, and using a scan tool to monitor EGR system performance.

6. How do I fix the P245A code on my Silverado?

Repairs might include replacing the EGR cooler bypass valve, repairing damaged wiring or connectors, or updating the engine control module (ECM) software if needed.

7. What tools are needed to address the P245A code?

You’ll need a diagnostic scan tool, a multimeter for electrical testing, and possibly tools to access and replace the EGR cooler bypass valve.

8. How much does it cost to fix the P245A code on a 2018 Chevrolet Silverado?

Repair costs can vary, but replacing the EGR cooler bypass valve typically ranges from $300 to $700, depending on parts and labor rates.

9. Can a dirty EGR system cause the P245A code?

Yes, carbon buildup in the EGR system can restrict flow or cause the bypass valve to malfunction, triggering the code.

10. Will clearing the P245A code fix the problem?

Clearing the code may turn off the Check Engine Light temporarily, but the underlying issue must be resolved to prevent the code from returning.

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