Engine-CodesGMC – P10E4 2015 GMC Sierra

P10E4 2015 GMC Sierra Code - Ignition On/Start Circuit Source Bypass Relay Control Performance

Quick Answer

The P10E4 diagnostic trouble code for a 2015 GMC Sierra relates to the Ignition On/Start Circuit Source Bypass Relay Control Performance. Common causes include Faulty ignition relay, Wiring issues or shorts in the ignition circuit, Corrosion or poor connections in the relay control circuit. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means
P10E4 2015 GMC Sierra indicates Ignition On/Start Circuit Source Bypass Relay Control Performance.
Common causes
Common causes include Faulty ignition relay, Wiring issues or shorts in the ignition circuit, Corrosion or poor connections in the relay control circuit.
Severity
High - diagnose this code as soon as possible.
Can I drive?
Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
Table of contents Created and updated by William Orellana on Sep 15, 2024
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Code P10E4 2015 GMC Sierra Description

The P10E4 diagnostic trouble code for a 2015 GMC Sierra relates to the Ignition On/Start Circuit Source Bypass Relay Control Performance. This code indicates that there is a malfunction in the control performance of the relay responsible for bypassing the ignition on/start circuit source. In simpler terms, the vehicle's computer is detecting an issue with the relay that controls the ignition system when starting the engine. This can lead to difficulties in starting the vehicle, erratic engine behavior, and potential safety concerns.

OBDII Code P10E4 2015 GMC Sierra - Ignition On/Start Circuit Source Bypass Relay Control Performance
P10E4 2015 GMC Sierra Code - Ignition On/Start Circuit Source Bypass Relay Control Performance

Common Causes of P10E4 2015 GMC Sierra

  1. Faulty ignition relay
  2. Wiring issues or shorts in the ignition circuit
  3. Corrosion or poor connections in the relay control circuit
  4. Defective ignition switch
  5. Electronic control module (ECM) malfunction

Symptoms of P10E4 2015 GMC Sierra

  1. Difficulty starting the engine
  2. Intermittent starting issues
  3. Engine stalling or hesitation during startup
  4. Check Engine Light illuminated on the dashboard
  5. Reduced fuel efficiency

How to Fix P10E4 2015 GMC Sierra

  1. Begin by diagnosing the specific cause of the issue using a diagnostic scanner to pinpoint the faulty component.
  2. Inspect the ignition relay and related wiring for any signs of damage, corrosion, or loose connections.
  3. Replace the faulty ignition relay with a new, OEM-quality part to ensure proper functionality.
  4. Test the vehicle to verify that the issue has been resolved and that the engine starts smoothly without any issues.
  5. Clear the diagnostic trouble codes from the vehicle's computer to reset the system and ensure the Check Engine Light is turned off.

Cost to Fix P10E4 2015 GMC Sierra

The typical repair costs for addressing a P10E4 code on a 2015 GMC Sierra can vary depending on the specific cause of the issue. On average, the parts for replacing an ignition relay can range from $50 to $150, while labor costs can add another $80 to $150 per hour. Overall, the total repair cost for this issue may fall within the range of $150 to $400, including parts and labor. It's essential to consult with a qualified mechanic or auto repair shop to obtain an accurate estimate based on your location and vehicle's specific requirements.

Tech Notes for P10E4 2015 GMC Sierra

There is a Factory Service Bulletin for the following Chevrolet models:

2016-2018 Chevrolet Silverado 1500

2019 Chevrolet Silverado LD

Dead Battery / P1682 P129D P10E4 P2535 / Crank No Start

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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.

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