AutoCodes – Chevrolet – P16E8 2015 Chevrolet Silverado

P16E8 2015 Chevrolet Silverado 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 2015 Chevrolet Silverado 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.

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Code Popularity 213

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

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Table of contents Created and updated by William Orellana on Sep 29, 2022

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P16E8 2015 Chevrolet Silverado 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 Engine Controls Ignition Relay Signal Message Counter Incorrect.

OBDII Code P16E8 2015 Chevrolet Silverado - Engine Controls Ignition Relay Signal Message Counter Incorrect - AutoCodes.com — P16E8 2015 Chevrolet Silverado Code - Engine Controls Ignition Relay Signal Message Counter Incorrect

What does this mean?

What are the Possible Causes of the DTC P16E8 2015 Chevrolet Silverado?

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 2015 Chevrolet Silverado?

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 2015 Chevrolet Silverado 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 2015 Chevrolet Silverado code?

Need more information on how to fix the P16E8 2015 Chevrolet Silverado 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 P16E8 2015 Chevrolet Silverado Code

1. What does the OBDII code P16E8 mean on a 2015 Chevrolet Silverado?

P16E8 indicates that the Engine Control Module (ECM) has detected an issue with the ignition relay signal message counter, which may result in communication or timing errors related to the ignition system.

2. What are common symptoms of the P16E8 code in a 2015 Chevrolet Silverado?

Common symptoms include difficulty starting the engine, stalling, reduced engine performance, and the illumination of the check engine light.

3. What causes the P16E8 code to appear?

The code can be caused by a faulty ignition relay, wiring issues, a malfunctioning Engine Control Module (ECM), or software problems within the ECM.

4. Can a bad ignition relay trigger the P16E8 code?

Yes, a defective or failing ignition relay can disrupt the signal and cause the ECM to log the P16E8 code.

5. How can I diagnose the P16E8 code on my 2015 Chevrolet Silverado?

Diagnose the code by inspecting the ignition relay, checking the wiring and connectors for damage or corrosion, and scanning the ECM for any related errors or updates.

6. Is the P16E8 code serious?

Yes, it can be serious as it may lead to starting issues or engine stalling while driving, potentially causing unsafe conditions.

7. How do I fix the P16E8 code on my Silverado?

Repairs may involve replacing the ignition relay, repairing damaged wiring, updating the ECM software, or replacing the ECM if necessary.

8. Can I drive my Silverado with the P16E8 code?

Itâ€™s not recommended to drive with this code active, as it may lead to unreliable engine performance or stalling, which can be dangerous.

9. Does the P16E8 code require ECM reprogramming?

In some cases, a software update or reprogramming of the ECM may be necessary to resolve the issue, especially if the problem is related to a software glitch.

10. How much does it cost to fix the P16E8 code?

The cost can vary depending on the root cause, ranging from $50 to $150 for an ignition relay replacement to several hundred dollars for ECM repairs or reprogramming.