AutoCodes – GMC – P245D 2016 GMC Sierra

P245D 2016 GMC Sierra Code - Exhaust Gas Recirculation Cooler Bypass Control Circuit High Voltage

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: P245D 2016 GMC Sierra indicates Exhaust Gas Recirculation Cooler Bypass Control Circuit High Voltage.
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 166

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 P245D 2016 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 that the EGR cooler bypass valve control circuits are shorted to voltage for greater than 3 s.

OBDII Code P245D 2016 GMC Sierra - Exhaust Gas Recirculation Cooler Bypass Control Circuit High Voltage - AutoCodes.com — P245D 2016 GMC Sierra Code - Exhaust Gas Recirculation Cooler Bypass Control Circuit High Voltage

What does this mean?

What are the Possible Causes of the DTC P245D 2016 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 P245D 2016 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 P245D 2016 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 P245D 2016 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 P245D 2016 GMC Sierra Code

1. What does OBDII code P245D mean on a 2016 GMC Sierra?

P245D indicates a high voltage issue in the Exhaust Gas Recirculation (EGR) Cooler Bypass Control Circuit, which can affect emissions and engine performance.

2. What are the common symptoms of code P245D on a GMC Sierra?

Symptoms may include the check engine light turning on, reduced engine performance, increased emissions, or unusual engine noises.

3. What causes the P245D code to appear?

Common causes include a faulty EGR cooler bypass valve, wiring issues such as damaged or corroded connectors, or a malfunctioning EGR bypass control solenoid.

4. Can I drive my 2016 GMC Sierra with the P245D code active?

Driving is possible but not recommended, as it may lead to increased emissions, poor fuel efficiency, or long-term engine damage if the issue is not resolved.

5. How do I diagnose the P245D code on my GMC Sierra?

Diagnosis involves using an OBDII scanner to confirm the code, inspecting the EGR cooler bypass valve, checking wiring and connectors for damage, and testing the bypass control solenoid.

6. How do I fix the P245D code on a 2016 GMC Sierra?

Repairs may include replacing the EGR cooler bypass valve, repairing or replacing damaged wiring, or replacing a defective EGR control solenoid.

7. What tools are needed to fix the P245D code?

Basic tools include an OBDII scanner, a multimeter for electrical testing, and standard hand tools for component replacement.

8. How much does it cost to fix the P245D code on a GMC Sierra?

Repair costs vary but may range from $150 to $600 depending on whether parts like the EGR bypass valve or control solenoid need replacement.

9. Can a dirty EGR system cause the P245D code?

Yes, carbon buildup in the EGR system can cause components to malfunction, potentially triggering the P245D code.

10. Is the P245D code covered under warranty for a 2016 GMC Sierra?

It depends on your vehicleâ€™s warranty terms. Emissions-related components may be covered under the federally mandated emissions warranty. Check with your dealership for details.