AutoCodes – GMC – P100E 2015 GMC Sierra

P100E 2015 GMC Sierra Code - Accelerator Pedal Position Signal Message Counter Incorrect

Quick Answer

Control modules connected to the serial data circuits monitor the communication during normal vehicle operation. Common causes include Faulty Accelerator Pedal Position Sensor, Accelerator Pedal Position Sensor harness is open or shorted, Accelerator Pedal Position Sensor 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: P100E 2015 GMC Sierra indicates Accelerator Pedal Position Signal Message Counter Incorrect.
Common causes: Common causes include Faulty Accelerator Pedal Position Sensor, Accelerator Pedal Position Sensor harness is open or shorted, Accelerator Pedal Position Sensor 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 159

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Aug 19, 2022

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P100E 2015 GMC Sierra Description

Control modules connected to the serial data circuits monitor the communication during normal vehicle operation. Operating information and commands are exchanged among the control modules. Each module on the serial data circuit maintains a transmit error counter and a receive error counter. The counter values increase with detected errors and decrease with error-free messages. The Diagnostic Trouble Code (DTC) will be set when the Accelerator Pedal Position Signal Message Counter is Incorrect.

OBDII Code P100E 2015 GMC Sierra - Accelerator Pedal Position Signal Message Counter Incorrect - AutoCodes.com — P100E 2015 GMC Sierra Code - Accelerator Pedal Position Signal Message Counter Incorrect

What does this mean?

What are the Possible Causes of the DTC P100E 2015 GMC Sierra?

Faulty Accelerator Pedal Position Sensor
Accelerator Pedal Position Sensor harness is open or shorted
Accelerator Pedal Position Sensor circuit poor electrical connection

How to Fix the DTC P100E 2015 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 P100E 2015 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 P100E 2015 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 P100E 2015 GMC Sierra Code

1. What does the OBDII code P100E mean on a 2015 GMC Sierra?

The P100E code indicates an issue with the Accelerator Pedal Position (APP) signal message counter being incorrect, often related to communication or signal errors between the pedal and the engine control module (ECM).

2. What are the common symptoms of the P100E code?

Symptoms may include reduced engine power, the check engine light illuminating, poor throttle response, or the vehicle entering "limp" mode.

3. What causes the P100E code to appear?

The code can be triggered by a faulty accelerator pedal position sensor, wiring or connector issues, or a software/communication error in the ECM.

4. Can I drive with the P100E code active?

Driving with this code may be possible, but itâ€™s not recommended as reduced power mode can limit performance and create unsafe driving conditions.

5. How do you diagnose the P100E code?

A technician will use a scan tool to confirm the code, inspect the accelerator pedal position sensor and its wiring, and check for any related communication issues in the ECM.

6. How can the P100E code be fixed?

Repairs may involve replacing the accelerator pedal position sensor, repairing or replacing damaged wiring, or reprogramming/updating the ECM.

7. How much does it cost to repair the P100E code on a 2015 GMC Sierra?

The cost can range from $100 to $500 depending on whether the sensor, wiring, or ECM requires repair or replacement.

8. Can a software update fix the P100E code?

Yes, in some cases, a software update or reprogramming of the ECM may resolve the issue if it is related to a communication error.

9. What tools are needed to troubleshoot the P100E code?

Troubleshooting requires a diagnostic scan tool, a multimeter for checking electrical connections, and possibly a wiring diagram for the accelerator pedal circuit.

10. Can a dirty throttle body cause the P100E code?

A dirty throttle body itself is unlikely to cause this specific code, but it can contribute to poor throttle response, which might confuse the diagnostic process.