AutoCodes – GMC – P245A 2017 GMC Sierra

P245A 2017 GMC Sierra 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 2017 GMC Sierra 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 170

How popular is this code, among other codes? Low

Repair Importance Level

Moderate (Service soon) (2 / 3)

Repair Difficulty Level

Intermediate (2 / 3)

What is this?

Table of contents Created and updated by William Orellana on Sep 30, 2022

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P245A 2017 GMC Sierra 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 2017 GMC Sierra - Exhaust Gas Recirculation Cooler Bypass Control Circuit - AutoCodes.com — P245A 2017 GMC Sierra Code - Exhaust Gas Recirculation Cooler Bypass Control Circuit

What does this mean?

What are the Possible Causes of the DTC P245A 2017 GMC Sierra?

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 2017 GMC Sierra?

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 2017 GMC Sierra 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 2017 GMC Sierra 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 2017 GMC Sierra Code

1. What are the common symptoms of OBDII code P245A in a 2017 GMC Sierra related to the Exhaust Gas Recirculation (EGR) Cooler Bypass Control Circuit?

The common symptoms of P245A may include the check engine light coming on, reduced engine performance, and potential issues with the EGR system.

2. What can cause the OBDII code P245A to trigger in a 2017 GMC Sierra?

The P245A code is typically triggered when there is a malfunction in the EGR cooler bypass control circuit, which can be caused by wiring issues, EGR cooler problems, or a faulty EGR valve.

3. How serious is the OBDII code P245A in a 2017 GMC Sierra?

While the P245A code may not cause immediate drivability issues, it is important to address this code promptly to prevent potential damage to the EGR system and ensure optimal engine performance.

4. How can I diagnose the OBDII code P245A in a 2017 GMC Sierra?

Diagnosing P245A usually involves using an OBDII scanner to read the code, inspecting the EGR system components for any visible damage, and testing the EGR cooler bypass control circuit for continuity and proper operation.

5. What are some DIY repair tips for fixing the OBDII code P245A in a 2017 GMC Sierra?

DIY repair tips may include checking and repairing any damaged wiring in the EGR system, cleaning or replacing the EGR valve, and ensuring proper functioning of the EGR cooler bypass control circuit.

6. Can I continue driving my 2017 GMC Sierra with the OBDII code P245A present?

While it may be possible to drive with the P245A code present, it is advisable to address the underlying issue promptly to prevent any potential engine or emissions system damage.

7. How much does it typically cost to repair the OBDII code P245A in a 2017 GMC Sierra?

The cost of repairing P245A can vary depending on the root cause of the issue, but it may involve expenses related to parts replacement, labor costs, and diagnostic fees.

8. Is it safe to reset the check engine light after repairing the OBDII code P245A in a 2017 GMC Sierra?

Yes, it is safe to reset the check engine light after repairing P245A. This can be done using an OBDII scanner or by disconnecting the vehicle's battery for a few minutes.

9. Will the OBDII code P245A in a 2017 GMC Sierra cause the vehicle to fail an emissions test?

Yes, the P245A code typically indicates a problem with the emissions control system, which may cause the vehicle to fail an emissions test until the issue is resolved.

10. How often does the OBDII code P245A related to the Exhaust Gas Recirculation Cooler Bypass Control Circuit occur in a 2017 GMC Sierra?

The occurrence of the P245A code can vary depending on factors such as vehicle maintenance, driving conditions, and the overall health of the EGR system in the 2017 GMC Sierra.