AutoCodes – GMC – P117A 2016 GMC Sierra

P117A 2016 GMC Sierra Code - Engine Block Coolant Valve 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 Block Coolant Valve, Engine Block Coolant Valve harness is open or shorted, Engine Block Coolant Valve 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: P117A 2016 GMC Sierra indicates Engine Block Coolant Valve Signal Message Counter Incorrect.
Common causes: Common causes include Faulty Engine Block Coolant Valve, Engine Block Coolant Valve harness is open or shorted, Engine Block Coolant Valve 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 320

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 Sep 26, 2022

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P117A 2016 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 Engine Block Coolant Valve Signal Message Counter is Incorrect.

OBDII Code P117A 2016 GMC Sierra - Engine Block Coolant Valve Signal Message Counter Incorrect - AutoCodes.com — P117A 2016 GMC Sierra Code - Engine Block Coolant Valve Signal Message Counter Incorrect

What does this mean?

What are the Possible Causes of the DTC P117A 2016 GMC Sierra?

Faulty Engine Block Coolant Valve
Engine Block Coolant Valve harness is open or shorted
Engine Block Coolant Valve circuit poor electrical connection

How to Fix the DTC P117A 2016 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 P117A 2016 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 P117A 2016 GMC Sierra 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 P117A 2016 GMC Sierra Code

1. What does the OBDII code P117A mean on a 2016 GMC Sierra?

P117A indicates an issue with the Engine Block Coolant Valve Signal, specifically that the message counter from the valve is incorrect or outside expected parameters.

2. What are the common symptoms of code P117A on a 2016 GMC Sierra?

Symptoms may include an illuminated check engine light, engine overheating, reduced engine performance, or inconsistent cabin heating.

3. What causes the P117A code to appear on a 2016 GMC Sierra?

Common causes include a faulty engine block coolant valve, wiring or connector issues, a malfunctioning control module, or software-related problems.

4. Can I drive my 2016 GMC Sierra with a P117A code?

Driving with this code is not recommended, as it may lead to engine overheating or reduced performance, potentially causing further damage.

5. How do I diagnose a P117A code on my 2016 GMC Sierra?

Diagnosis involves inspecting the engine block coolant valve, checking for damaged wiring or connectors, and scanning the system for related codes or control module issues.

6. How do I fix the P117A code on a 2016 GMC Sierra?

Repairs may include replacing the engine block coolant valve, repairing damaged wiring or connectors, or reprogramming the control module if necessary.

7. How much does it cost to fix the P117A code on a 2016 GMC Sierra?

Repair costs can vary but typically range from $150 to $500, depending on whether the valve, wiring, or control module requires replacement or repair.

8. Can a faulty thermostat cause a P117A code on a 2016 GMC Sierra?

While unlikely, a faulty thermostat could contribute to overheating issues, but the code specifically points to the engine block coolant valve.

9. Does the P117A code require reprogramming the control module on a 2016 GMC Sierra?

In some cases, reprogramming or updating the control module software may be needed if a glitch or outdated firmware is causing the issue.

10. How can I prevent the P117A code from appearing again on my 2016 GMC Sierra?

Regular maintenance, inspecting the cooling system components, and addressing any wiring or connector issues early can help prevent recurrence of this code.