Engine-Codes.com
Engine-Codes – GMC – P16FF 2017 GMC Sierra

P16FF 2017 GMC Sierra Code - Engine Controls Ignition Relay Request Signal Message Counter Incorrect

Quick Answer

The diagnostic trouble code P16FF for a 2017 GMC Sierra indicates that there is an issue with the Engine Controls Ignition Relay Request Signal Message Counter being incorrect. Common causes include Faulty ignition relay, Wiring issues or loose connections, Electrical faults in the ECM. 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
P16FF 2017 GMC Sierra indicates Engine Controls Ignition Relay Request Signal Message Counter Incorrect.
Common causes
Common causes include Faulty ignition relay, Wiring issues or loose connections, Electrical faults in the ECM.
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 17, 2024
💬 Need more help? Ask Auto Expert for instant answers — it's free!
AutoCodes App

Fix Your Car Smarter

Try the New AutoCodes App!

Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.

AutoCodes App on Google Play

Code P16FF 2017 GMC Sierra Description

The diagnostic trouble code P16FF for a 2017 GMC Sierra indicates that there is an issue with the Engine Controls Ignition Relay Request Signal Message Counter being incorrect. This code typically points to a problem with the communication between the engine control module (ECM) and the ignition relay. The ignition relay is responsible for sending the signal to the ECM to control the ignition system, which is crucial for starting and running the engine smoothly.

OBDII Code P16FF 2017 GMC Sierra - Engine Controls Ignition Relay Request Signal Message Counter Incorrect
P16FF 2017 GMC Sierra Code - Engine Controls Ignition Relay Request Signal Message Counter Incorrect

Common Causes of P16FF 2017 GMC Sierra

  1. Faulty ignition relay
  2. Wiring issues or loose connections
  3. Electrical faults in the ECM
  4. Corrosion or damage to electrical components
  5. Software glitches in the ECM

Symptoms of P16FF 2017 GMC Sierra

  1. Engine misfires or runs rough
  2. Difficulty starting the engine
  3. Stalling or hesitation during acceleration
  4. Loss of power while driving
  5. Illumination of the check engine light

How to Fix P16FF 2017 GMC Sierra

  1. Begin by conducting a thorough inspection of the ignition relay and wiring to identify any visible damage or loose connections.
  2. Test the ignition relay using a multimeter to check for proper functionality.
  3. Check the ECM for any software updates or glitches that may be causing the communication error.
  4. Repair or replace any faulty components, such as the ignition relay or damaged wiring.
  5. Clear the diagnostic trouble codes and perform a test drive to ensure the issue has been resolved.

Cost to Fix P16FF 2017 GMC Sierra

The typical repair costs for addressing the P16FF code on a 2017 GMC Sierra can vary depending on the specific cause of the issue. In general, the cost of replacing an ignition relay can range from $50 to $150, while addressing wiring or electrical faults may increase the total cost. Labor rates at auto repair shops can vary, but on average, expect to pay between $100 and $300 for this repair. It's advisable to consult with a trusted mechanic or dealership for a more accurate estimate based on your location and vehicle's specific needs.

Need more information about the P16FF 2017 GMC Sierra code?

Need more information on how to fix the P16FF 2017 GMC Sierra code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P16FF 2017 GMC Sierra code diagnosed by a professional: Find a repair shop in your area

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 P16FF 2017 GMC Sierra Code

1. What are the common symptoms of OBDII code P16FF in a 2017 GMC Sierra?

The common symptoms include engine misfires, rough idling, difficulty starting the vehicle, and a decrease in overall engine performance.

2. What typically causes the OBDII code P16FF to appear in a 2017 GMC Sierra?

The code P16FF usually indicates a problem with the engine controls ignition relay request signal message counter being incorrect, which can be caused by a faulty ignition relay or a problem with the wiring or connections.

3. How can I diagnose the OBDII code P16FF in my 2017 GMC Sierra?

Diagnosing the code P16FF involves using an OBDII scanner to retrieve the specific fault code, checking the ignition relay and related components for any visible damage, and testing the wiring and connections for continuity and proper voltage.

4. Can I continue driving my 2017 GMC Sierra with the OBDII code P16FF?

It is not recommended to continue driving your vehicle with the code P16FF present, as it can lead to further damage to the engine and other components. It is advisable to address the issue promptly.

5. What are some repair tips for fixing the OBDII code P16FF in a 2017 GMC Sierra?

Some repair tips include checking and replacing the faulty ignition relay, inspecting and repairing any damaged wiring or connections, and clearing the fault code with an OBDII scanner after completing the repairs.

6. Will resetting the OBDII code P16FF in my 2017 GMC Sierra make it go away permanently?

Resetting the code may temporarily clear the warning light, but if the underlying issue causing the code to appear is not addressed, the code is likely to return. It is essential to diagnose and fix the root cause of the problem.

7. How much does it typically cost to repair the OBDII code P16FF in a 2017 GMC Sierra?

The cost of repairing the code P16FF can vary depending on the specific cause of the issue, the labor rates in your area, and whether you choose to do the repairs yourself or take your vehicle to a mechanic. Costs may range from a few dollars for a simple fix to a few hundred dollars for more complex repairs.

8. Can a DIY enthusiast fix the OBDII code P16FF in a 2017 GMC Sierra?

Yes, a knowledgeable DIY enthusiast with the right tools and experience can often diagnose and repair the OBDII code P16FF in a 2017 GMC Sierra. However, if you are unsure or inexperienced, it is best to seek professional help to avoid causing further damage.

Discuss the causes and fixes for P16FF 2017 GMC Sierra OBDII Code

Submit a New Comment

Code P16FF 2017 GMC Sierra comments

No comments found for this page.