AutoCodesGMC – P10E1 2018 GMC Sierra

P10E1 2018 GMC Sierra Code - Ignition On/Start Circuit Source Bypass Relay Control Circuit

Quick Answer

The Engine Control Module (ECM) contains a microprocessor used to process input data to control outputs. Common causes include Faulty Engine Control Module Wake-Up Relay, Engine Control Module Wake-Up Relay harness is open or shorted, Engine Control Module Wake-Up Relay circuit poor electrical connection. 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
P10E1 2018 GMC Sierra indicates Ignition On/Start Circuit Source Bypass Relay Control Circuit.
Common causes
Common causes include Faulty Engine Control Module Wake-Up Relay, Engine Control Module Wake-Up Relay harness is open or shorted, Engine Control Module Wake-Up Relay circuit poor electrical connection.
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.
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Code Popularity 441
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Aug 11, 2022
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Code P10E1 2018 GMC Sierra Description

The Engine Control Module (ECM) contains a microprocessor used to process input data to control outputs. The control module controls a series of actuators to ensure optimal engine performance. The control module does this by reading values from a variety of sensors, interprets the data and adjusts the engine actuators accordingly. Relays are used to control a high-power circuit with a low power signal. The output circuit is switched to the ground to activate the component. The Diagnostic Trouble Code (DTC) will be set when the Control Circuit is open for greater than 1 s.
OBDII Code P10E1 2018 GMC Sierra - Ignition On/Start Circuit Source Bypass Relay Control Circuit - AutoCodes.com
P10E1 2018 GMC Sierra Code - Ignition On/Start Circuit Source Bypass Relay Control Circuit

What are the Possible Causes of the DTC P10E1 2018 GMC Sierra?

  • Faulty Engine Control Module Wake-Up Relay
  • Engine Control Module Wake-Up Relay harness is open or shorted
  • Engine Control Module Wake-Up Relay circuit poor electrical connection
  • Faulty Engine Control Module (ECM)

How to Fix the DTC P10E1 2018 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 P10E1 2018 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 P10E1 2018 GMC Sierra code?

Need more information on how to fix the P10E1 2018 GMC Sierra code? Get Access to Factory Service Manuals

Need Help with the 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 P10E1 2018 GMC Sierra Code

1. What does the P10E1 code mean for a 2018 GMC Sierra?

The P10E1 code indicates an issue with the Ignition On/Start Circuit Source Bypass Relay Control Circuit, suggesting a malfunction in the relay or its associated wiring.

2. What are the common symptoms of the P10E1 code?

Symptoms may include difficulty starting the engine, intermittent no-start conditions, or the Check Engine Light being illuminated.

3. What causes the P10E1 code to appear?

Common causes include a faulty bypass relay, damaged or corroded wiring, poor electrical connections, or a malfunctioning powertrain control module (PCM).

4. Can I drive with the P10E1 code on my 2018 GMC Sierra?

Driving with this code may result in intermittent starting issues, so it’s best to address it promptly to avoid being stranded.

5. How do I diagnose the P10E1 code?

Start by inspecting the bypass relay, wiring, and connectors for damage or corrosion. Use a multimeter to check for proper voltage and continuity in the circuit.

6. How do I fix the P10E1 code on my GMC Sierra?

Repairs may include replacing the source bypass relay, repairing or replacing damaged wiring, or cleaning and securing electrical connections.

7. Is the P10E1 code a serious issue?

While it may not immediately disable the vehicle, this code can lead to starting problems, so it’s important to diagnose and repair it as soon as possible.

8. How much does it cost to repair the P10E1 code?

Repair costs can vary but typically range from $50 to $200 depending on whether the issue is with the relay, wiring, or connectors.

9. Can a weak battery trigger the P10E1 code?

Yes, a weak or failing battery can cause voltage irregularities that may trigger this code, so it’s worth checking the battery’s condition.

10. Do I need special tools to fix the P10E1 code?

You may need a scan tool to clear codes, a multimeter to test electrical circuits, and basic hand tools to replace components.

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