AutoCodes – GMC – P16F3 GMC

P16F3 GMC Code - Control Module Redundant Memory Performance

Quick Answer

This diagnostic applies to internal microprocessor integrity conditions within the Engine Control Module (ECM). Common causes include Low battery voltage, Reprogram Engine Control Module (ECM), Faulty Engine Control Module. 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: P16F3 GMC indicates Control Module Redundant Memory Performance.
Common causes: Common causes include Low battery voltage, Reprogram Engine Control Module (ECM), Faulty Engine Control Module.
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 14,532

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 Mar 29, 2024

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code P16F3 GMC Description

This diagnostic applies to internal microprocessor integrity conditions within the Engine Control Module (ECM). This diagnostic also addresses if the ECM is not programmed. The ECM monitors its ability to read and write to the memory. It also monitors a timing function. No external circuits are involved. The Diagnostic Trouble Code (DTC) will be set when the ECM detects an internal failure or incomplete programming for more than 10 s.

OBDII Code P16F3 GMC - Control Module Redundant Memory Performance - AutoCodes.com — P16F3 GMC Code - Control Module Redundant Memory Performance

What does this mean?

What are the Possible Causes of the DTC P16F3 GMC?

Low battery voltage
Reprogram Engine Control Module (ECM)
Faulty Engine Control Module
Engine Control Module harness is open or shorted
Engine Control Module circuit poor electrical connection

How to Fix the DTC P16F3 GMC?

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 does this mean?

Code Tech Notes

If no problems are found during the inspection, reprogram the Powertrain Control Module (PCM) with the latest software program.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P16F3 GMC 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 P16F3 GMC code?

Need more information on how to fix the P16F3 GMC code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P16F3 GMC code diagnosed by a professional: Find a repair shop in your area

Information for Specific GMC Models

P16F3 2014 GMC Sierra — Control Module Redundant Memory Performance
P16F3 2015 GMC Sierra — Control Module Redundant Memory Performance
P16F3 2016 GMC Sierra — Control Module Redundant Memory Performance
P16F3 2017 GMC Sierra — Control Module Redundant Memory Performance
P16F3 2018 GMC Sierra — Control Module Redundant Memory Performance

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 P16F3 GMC Code

1. What does the OBDII code P16F3 mean on a GMC vehicle?

The P16F3 code indicates an issue with the Control Module Redundant Memory Performance, meaning the moduleâ€™s backup memory system isnâ€™t functioning properly.

2. What are the common symptoms of the P16F3 code in GMC vehicles?

Symptoms may include an illuminated Check Engine Light, difficulty starting the vehicle, erratic engine performance, or loss of stored settings like radio presets.

3. What causes the P16F3 code to appear on a GMC?

The code is typically triggered by a malfunction in the control module, corrupted memory data, software issues, or poor electrical connections such as damaged wiring or a weak battery.

4. Can a weak battery trigger the P16F3 code on a GMC?

Yes, a weak or failing battery can cause voltage irregularities, potentially leading to memory performance issues and triggering the P16F3 code.

5. How do you diagnose the P16F3 code on a GMC vehicle?

Diagnosis involves using an OBDII scanner to confirm the code, inspecting the control module and wiring for damage, checking battery voltage, and verifying software updates.

6. Can the P16F3 code cause drivability issues in a GMC?

Yes, in some cases, the code can cause drivability issues like stalling, poor engine performance, or failure to start.

7. How can you fix the P16F3 code on a GMC?

Repairs may include reprogramming or replacing the control module, repairing damaged wiring, securing connections, or replacing a weak battery.

8. Is the P16F3 code specific to GMC vehicles?

While P16F3 is more commonly reported in GMC vehicles, it can potentially appear in other General Motors vehicles with similar control module designs.

9. Can I clear the P16F3 code without repairing the issue?

Clearing the code without addressing the underlying issue may temporarily turn off the Check Engine Light, but the code is likely to return if the problem persists.

10. How much does it cost to fix the P16F3 code on a GMC?

Repair costs vary depending on the issue, ranging from $100 for minor wiring repairs to $1,000 or more for control module replacement and programming.