P16E8 GMC Code - Engine Controls Ignition Relay 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 Engine Controls Ignition Relay, Engine Controls Ignition Relay harness is open or shorted, Engine Controls Ignition Relay 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
- P16E8 GMC indicates Engine Controls Ignition Relay Signal Message Counter Incorrect.
- Common causes
- Common causes include Faulty Engine Controls Ignition Relay, Engine Controls Ignition Relay harness is open or shorted, Engine Controls Ignition Relay 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.
Code P16E8 GMC Description
What are the Possible Causes of the DTC P16E8 GMC?
- Faulty Engine Controls Ignition Relay
- Engine Controls Ignition Relay harness is open or shorted
- Engine Controls Ignition Relay circuit poor electrical connection
How to Fix the DTC P16E8 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 is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P16E8 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 P16E8 GMC code?
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Need Help with the Code?
Get the P16E8 GMC code diagnosed by a professional: Find a repair shop in your area
Information for Specific GMC Models
- P16E8 2014 GMC Sierra — Engine Controls Ignition Relay Signal Message Counter Incorrect
- P16E8 2015 GMC Sierra — Engine Controls Ignition Relay Signal Message Counter Incorrect
- P16E8 2016 GMC Sierra — Engine Controls Ignition Relay Signal Message Counter Incorrect
- P16E8 2017 GMC Sierra — Engine Controls Ignition Relay Signal Message Counter Incorrect
- P16E8 2018 GMC Sierra — Engine Controls Ignition Relay Signal Message Counter Incorrect
Frequently Asked Questions about P16E8 GMC Code
1. What are the common symptoms of OBDII code P16E8 in a GMC vehicle?
- Common symptoms include rough idling, stalling, difficulty starting the engine, and the Check Engine light being illuminated.
2. What does the OBDII code P16E8 GMC indicate?
- The code P16E8 indicates that the Engine Controls Ignition Relay Signal Message Counter is incorrect.
3. What are the possible causes of OBDII code P16E8 in a GMC vehicle?
- Possible causes include a faulty ignition relay, wiring issues, a damaged relay control circuit, or a problem with the engine control module.
4. How can I diagnose the OBDII code P16E8 in my GMC vehicle?
- Diagnosing the code typically involves inspecting the ignition relay, checking the wiring for any damage, testing the relay control circuit, and scanning the engine control module for related faults.
5. Can I drive my GMC vehicle with the OBDII code P16E8 present?
- It is not recommended to drive your vehicle with the P16E8 code present, as it can lead to poor engine performance and potential further damage.
6. What are some repair tips for resolving the OBDII code P16E8 GMC?
- Repair tips may include replacing the faulty ignition relay, repairing any damaged wiring, ensuring proper connections, and clearing the trouble code with a diagnostic scanner.
7. How serious is the OBDII code P16E8 in a GMC vehicle?
- The P16E8 code should be addressed promptly to avoid potential engine performance issues and prevent further damage to the vehicle.
8. Can I reset the OBDII code P16E8 in my GMC vehicle without fixing the underlying issue?
- While you can clear the code with a diagnostic scanner, it is recommended to fix the underlying issue causing the code to prevent future problems.
9. Does the OBDII code P16E8 GMC require professional repair?
- Depending on your level of automotive experience, you may need professional assistance to diagnose and repair the underlying issue causing the P16E8 code.
10. How can I prevent the OBDII code P16E8 from recurring in my GMC vehicle?
- Regular maintenance, timely repairs of any related issues, and using high-quality parts can help prevent the recurrence of the P16E8 trouble code.
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