AutoCodesGMC – P100E 2014 GMC Sierra

P100E 2014 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 2014 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 135
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Aug 19, 2022
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Code P100E 2014 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 2014 GMC Sierra - Accelerator Pedal Position Signal Message Counter Incorrect - AutoCodes.com
P100E 2014 GMC Sierra Code - Accelerator Pedal Position Signal Message Counter Incorrect

What are the Possible Causes of the DTC P100E 2014 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 2014 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 2014 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 2014 GMC Sierra code?

Need more information on how to fix the P100E 2014 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 P100E 2014 GMC Sierra Code

1. What does the OBDII code P100E mean on a 2014 GMC Sierra?

The code P100E indicates an issue with the Accelerator Pedal Position Signal Message Counter, often caused by inconsistencies in the data being sent from the accelerator pedal sensor to the engine control module (ECM).

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

Symptoms may include reduced engine performance, activation of limp mode, a check engine light, or unresponsive acceleration.

3. What causes the P100E code to trigger?

This code can be caused by a faulty accelerator pedal position (APP) sensor, wiring issues such as a loose or damaged connector, or a malfunction in the ECM.

4. Can I drive my 2014 GMC Sierra with the P100E code?

While the vehicle may still be drivable, it could experience reduced performance or limp mode, which may make driving unsafe. It’s best to address the issue promptly.

5. How do I diagnose the P100E code on my GMC Sierra?

Start by scanning for codes with an OBDII scanner, inspecting the APP sensor and its wiring for damage or loose connections, and checking live data from the sensor for irregularities.

6. How can I fix the P100E code?

Repairs may include replacing the accelerator pedal position sensor, repairing or replacing damaged wiring, or reprogramming or replacing the ECM if necessary.

7. How much does it cost to repair the P100E code?

Costs vary depending on the cause, with a new APP sensor typically costing $100–$300, plus labor. ECM repairs or replacements can be more expensive.

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

A dirty throttle body is not a direct cause of this code but could contribute to throttle-related issues. Cleaning it may help if combined with other repairs.

9. Does the P100E code always require sensor replacement?

No, sometimes the issue is due to wiring problems or a software glitch in the ECM, which may not require sensor replacement.

10. Will clearing the P100E code with a scanner fix the problem?

Clearing the code may temporarily turn off the check engine light, but the root cause must be addressed to prevent the code from returning.

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