AutoCodes – GMC – P245D GMC

P245D GMC 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 GMC 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 353

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

What does this mean?

What are the Possible Causes of the DTC P245D GMC?

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 GMC?

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 GMC 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 GMC code?

Need more information on how to fix the P245D GMC code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P245D GMC code diagnosed by a professional: Find a repair shop in your area

Information for Specific GMC Models

P245D 2014 GMC Sierra — Exhaust Gas Recirculation Cooler Bypass Control Circuit High Voltage
P245D 2015 GMC Sierra — Exhaust Gas Recirculation Cooler Bypass Control Circuit High Voltage
P245D 2016 GMC Sierra — Exhaust Gas Recirculation Cooler Bypass Control Circuit High Voltage
P245D 2017 GMC Sierra — Exhaust Gas Recirculation Cooler Bypass Control Circuit High Voltage
P245D 2018 GMC Sierra — Exhaust Gas Recirculation Cooler Bypass Control Circuit High Voltage

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 GMC Code

1. What are the common symptoms of OBDII code P245D GMC?

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

2. What can cause the Exhaust Gas Recirculation Cooler Bypass Control Circuit High Voltage fault code?

This fault code is commonly caused by a faulty EGR cooler bypass control valve, damaged wiring or connectors in the circuit, or a malfunctioning powertrain control module (PCM).

3. How serious is the P245D GMC fault code?

While the vehicle may still be driveable with this fault code present, it is important to address it promptly to prevent potential damage to the engine or emissions system.

4. Can I continue driving my vehicle with the P245D code?

It is not recommended to continue driving your vehicle with the P245D code present, as it can lead to further issues and potential damage to the engine and emissions system.

5. How can I diagnose the P245D GMC code?

Diagnosing the P245D code typically involves using a scan tool to retrieve the specific fault code, followed by a visual inspection of the EGR cooler bypass control valve, wiring, and connectors for any visible damage.

6. What are some repair tips for OBDII code P245D GMC?

Repairing this code may involve replacing the EGR cooler bypass control valve, repairing or replacing damaged wiring or connectors, and resetting the fault code with a scan tool after the repairs are completed.

7. Can a DIY enthusiast fix the P245D code?

While some DIY enthusiasts may have the skills to diagnose and repair this code, it is recommended to seek professional help, especially if you are not familiar with automotive electrical systems.

8. Will clearing the fault code fix the issue temporarily?

Simply clearing the fault code without addressing the underlying cause will likely only provide a temporary fix, as the issue triggering the code will persist and may lead to the code reappearing.

9. How long does it take to repair the P245D GMC fault code?

The repair time for the P245D code can vary depending on the exact cause of the issue and the extent of the repairs needed, but it typically takes a few hours to complete the necessary repairs.

10. Is it necessary to visit a dealership for P245D code repairs?

While visiting a dealership is an option, independent automotive repair shops and skilled mechanics can also diagnose and repair the P245D code effectively, potentially at a lower cost.