AutoCodes – GMC – P100E 2016 GMC Sierra

P100E 2016 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 2016 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 144

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 2016 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 2016 GMC Sierra - Accelerator Pedal Position Signal Message Counter Incorrect - AutoCodes.com — P100E 2016 GMC Sierra Code - Accelerator Pedal Position Signal Message Counter Incorrect

What does this mean?

What are the Possible Causes of the DTC P100E 2016 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 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 P100E 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 P100E 2016 GMC Sierra code?

Need more information on how to fix the P100E 2016 GMC Sierra code? Get Access to Factory Service Manuals

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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 2016 GMC Sierra Code

1. What does the OBDII code P100E mean on a 2016 GMC Sierra?

P100E indicates that the accelerator pedal position (APP) signal message counter is incorrect, suggesting a communication issue between the pedal and the vehicle's computer.

2. What are the common symptoms of code P100E in a 2016 GMC Sierra?

Symptoms may include reduced engine performance, a check engine light, unresponsive throttle, or the vehicle going into "limp mode."

3. What causes the P100E code to appear on a 2016 GMC Sierra?

Common causes include a faulty accelerator pedal position sensor, wiring issues, a malfunctioning electronic throttle control module, or software issues in the powertrain control module (PCM).

4. Can I still drive my 2016 GMC Sierra with the P100E code?

While it may be possible to drive, the vehicle might enter limp mode, limiting performance. Driving with this code can be unsafe and may lead to further damage, so itâ€™s best to address the issue promptly.

5. How is the P100E code diagnosed in a 2016 GMC Sierra?

A technician will typically use a scan tool to check for additional codes, inspect the APP sensor and related wiring, and verify signal integrity between the sensor and the PCM.

6. Can a bad accelerator pedal position sensor cause the P100E code?

Yes, a malfunctioning APP sensor is one of the most common causes of the P100E code.

7. How do you fix the P100E code on a 2016 GMC Sierra?

Repairs may include replacing the accelerator pedal position sensor, repairing or replacing damaged wiring, updating PCM software, or replacing the PCM if necessary.

8. How much does it cost to repair the P100E code on a 2016 GMC Sierra?

Repair costs vary depending on the issue. Replacing the APP sensor typically costs $150-$300, while more extensive repairs like PCM replacement can cost significantly more.

9. Can a P100E code clear itself on a 2016 GMC Sierra?

In rare cases, the code may clear if the issue is intermittent, but persistent problems will require repair to fully resolve the code.

10. Is a software update necessary to fix the P100E code on a 2016 GMC Sierra?

A software update may be required if the PCM is not processing the APP signals correctly, but this should only be done after confirming no hardware issues are present.