AutoCodes – GMC – P15AE 2016 GMC Sierra

P15AE 2016 GMC Sierra Code - Fuel Injector Control Module System Voltage Low Voltage

Quick Answer

The vehicle control modules or sensors monitor the system voltage to verify the system voltage is within the normal operating range. Common causes include Faulty Fuel Injector Control Module, Fuel Injector Control Module harness is open or shorted, Fuel Injector Control Module 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
P15AE 2016 GMC Sierra indicates Fuel Injector Control Module System Voltage Low Voltage.
Common causes
Common causes include Faulty Fuel Injector Control Module, Fuel Injector Control Module harness is open or shorted, Fuel Injector Control Module 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 145
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Sep 23, 2022
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Code P15AE 2016 GMC Sierra Description

The vehicle control modules or sensors monitor the system voltage to verify the system voltage is within the normal operating range. The Diagnostic Trouble Code (DTC) will be set when the Fuel Injector Control Module detects a system voltage below or above a threshold.
OBDII Code P15AE 2016 GMC Sierra - Fuel Injector Control Module System Voltage Low Voltage - AutoCodes.com
P15AE 2016 GMC Sierra Code - Fuel Injector Control Module System Voltage Low Voltage

What are the Possible Causes of the DTC P15AE 2016 GMC Sierra?

  • Faulty Fuel Injector Control Module
  • Fuel Injector Control Module harness is open or shorted
  • Fuel Injector Control Module circuit poor electrical connection

How to Fix the DTC P15AE 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 P15AE 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 P15AE 2016 GMC Sierra code?

Need more information on how to fix the P15AE 2016 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 P15AE 2016 GMC Sierra Code

1. What does the P15AE code mean on a 2016 GMC Sierra?

The P15AE code indicates that the Fuel Injector Control Module (FICM) system is experiencing low voltage, which can affect the proper operation of the fuel injectors.

2. What are the common symptoms of the P15AE code?

Symptoms may include rough idle, poor acceleration, engine misfires, reduced fuel efficiency, and the Check Engine Light being illuminated.

3. What causes the P15AE code to appear?

Common causes include a weak or failing battery, damaged wiring or connectors in the FICM circuit, a faulty Fuel Injector Control Module, or a problem with the alternator.

4. Can a bad battery trigger the P15AE code?

Yes, a weak or failing battery can cause low voltage in the FICM system, leading to the P15AE code.

5. How do you diagnose the P15AE code?

Diagnosis involves checking the battery voltage, inspecting FICM wiring and connectors for damage, testing the alternator output, and verifying the functionality of the Fuel Injector Control Module.

6. Can I drive my 2016 GMC Sierra with the P15AE code?

It is not recommended to drive with this code for an extended period, as low voltage in the FICM system can lead to engine performance issues or further damage.

7. How do you fix the P15AE code?

Repairs may include replacing a failing battery, repairing or replacing damaged wiring, cleaning or reconnecting connectors, or replacing the Fuel Injector Control Module if necessary.

8. How much does it cost to fix the P15AE code?

Repair costs can vary widely, ranging from $100 to $1,000 depending on whether the issue is a simple wiring fix, battery replacement, or replacement of the FICM.

9. Can a failing alternator cause the P15AE code?

Yes, a failing alternator may not provide sufficient voltage to the FICM system, which can trigger the P15AE code.

10. How can I prevent the P15AE code from recurring?

Regular maintenance, including checking the battery, alternator, and wiring for wear or damage, can help prevent the P15AE code from recurring.

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