AutoCodes – GMC – P245A 2015 GMC Sierra

P245A 2015 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 2015 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 222

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 2015 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 2015 GMC Sierra - Exhaust Gas Recirculation Cooler Bypass Control Circuit - AutoCodes.com — P245A 2015 GMC Sierra Code - Exhaust Gas Recirculation Cooler Bypass Control Circuit

What does this mean?

What are the Possible Causes of the DTC P245A 2015 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 2015 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 2015 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.

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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 2015 GMC Sierra Code

1. What does OBDII code P245A mean for a 2015 GMC Sierra?

The code P245A signifies a problem with the Exhaust Gas Recirculation (EGR) Cooler Bypass Control Circuit in the vehicle.

2. What are the common symptoms of OBDII code P245A in a 2015 GMC Sierra?

Common symptoms of code P245A may include reduced engine performance, rough idling, decreased fuel efficiency, and the illumination of the check engine light.

3. What are the possible causes of OBDII code P245A in a 2015 GMC Sierra?

Potential causes of code P245A can include faulty EGR cooler bypass control solenoid, damaged wiring or connectors in the EGR system, or a malfunctioning EGR cooler bypass control module.

4. How can I diagnose OBDII code P245A in my 2015 GMC Sierra?

Diagnosing code P245A typically involves using an OBDII scanner to retrieve the trouble code, inspecting the EGR system components for any visible damage, and performing electrical tests on the EGR cooler bypass control circuit.

5. Can I continue driving my 2015 GMC Sierra with OBDII code P245A?

It is not recommended to drive your vehicle with an unresolved P245A code, as it can lead to further damage to the EGR system and potentially affect the overall performance of the vehicle.

6. How can I repair OBDII code P245A in my 2015 GMC Sierra?

Repairing code P245A may involve replacing the faulty EGR cooler bypass control solenoid, repairing damaged wiring or connectors, or replacing the EGR cooler bypass control module as needed.

7. Will resetting the check engine light resolve OBDII code P245A in my 2015 GMC Sierra?

Resetting the check engine light may temporarily clear the code, but if the underlying issue causing code P245A is not addressed, the code is likely to return.

8. Can a DIY enthusiast fix OBDII code P245A in a 2015 GMC Sierra?

While some aspects of diagnosing and repairing code P245A can be done by a DIY enthusiast, it is recommended to seek professional help for a thorough diagnosis and proper repair to ensure the issue is resolved correctly.

9. How much does it cost to fix OBDII code P245A in a 2015 GMC Sierra?

The cost of fixing code P245A can vary depending on the exact cause of the issue, the parts needed for repair, and the labor rates of the repair shop. It is advisable to obtain quotes from different mechanics or dealerships.

10. Is OBDII code P245A a common issue in 2015 GMC Sierra vehicles?

While code P245A may not be as common as some other OBDII codes, it can still occur in 2015 GMC Sierra vehicles due to various factors affecting the EGR system. Regular maintenance and proper care of the EGR components can help prevent this issue.