AutoCodes – GMC – P14A0 2016 GMC Sierra

P14A0 2016 GMC Sierra Code - Charge Air Cooler Coolant Pump Status 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 Charge Air Cooler Coolant Pump, Charge Air Cooler Coolant Pump harness is open or shorted, Charge Air Cooler Coolant Pump 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: P14A0 2016 GMC Sierra indicates Charge Air Cooler Coolant Pump Status Signal Message Counter Incorrect.
Common causes: Common causes include Faulty Charge Air Cooler Coolant Pump, Charge Air Cooler Coolant Pump harness is open or shorted, Charge Air Cooler Coolant Pump 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 169

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 28, 2022

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P14A0 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 Charge Air Cooler Coolant Pump Status Signal Message Counter is Incorrect.

OBDII Code P14A0 2016 GMC Sierra - Charge Air Cooler Coolant Pump Status Signal Message Counter Incorrect - AutoCodes.com — P14A0 2016 GMC Sierra Code - Charge Air Cooler Coolant Pump Status Signal Message Counter Incorrect

What does this mean?

What are the Possible Causes of the DTC P14A0 2016 GMC Sierra?

Faulty Charge Air Cooler Coolant Pump
Charge Air Cooler Coolant Pump harness is open or shorted
Charge Air Cooler Coolant Pump circuit poor electrical connection

How to Fix the DTC P14A0 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 P14A0 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 P14A0 2016 GMC Sierra code?

Need more information on how to fix the P14A0 2016 GMC Sierra code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P14A0 2016 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 P14A0 2016 GMC Sierra Code

1. What does the OBDII code P14A0 mean on a 2016 GMC Sierra?

The P14A0 code indicates an issue with the Charge Air Cooler Coolant Pump Status Signal Message Counter being incorrect, often related to communication or performance problems in the cooling system.

2. What are common symptoms of the P14A0 code on a 2016 GMC Sierra?

Symptoms may include reduced engine performance, increased intake air temperatures, a check engine light, or potential overheating in extreme cases.

3. What causes the P14A0 code to appear?

Common causes include a malfunctioning charge air cooler coolant pump, wiring or connector issues, a faulty control module, or an issue with the CAN bus communication.

4. Can I drive my 2016 GMC Sierra with the P14A0 code?

While the vehicle may still be drivable, itâ€™s not recommended as the code can indicate cooling inefficiencies that may lead to higher intake air temperatures and reduced engine performance.

5. How do I diagnose the P14A0 code on a 2016 GMC Sierra?

Diagnosis typically involves checking the charge air cooler coolant pump operation, inspecting wiring and connectors for damage, and using a scan tool to monitor the pump status signal and CAN bus communication.

6. What tools are needed to fix the P14A0 code?

Youâ€™ll need a scan tool capable of reading live data, a multimeter for testing electrical components, and possibly a repair manual specific to the 2016 GMC Sierra.

7. How is the P14A0 code repaired?

Repairs may include replacing the charge air cooler coolant pump, repairing or replacing damaged wiring or connectors, or reprogramming or replacing the control module.

8. How much does it cost to fix the P14A0 code on a 2016 GMC Sierra?

Costs can vary, but replacing the charge air cooler coolant pump can range from $200 to $600, depending on labor and parts. Additional diagnostics or repairs may increase costs.

9. Can a faulty charge air cooler coolant pump cause other issues?

Yes, a faulty pump can lead to higher intake air temperatures, reduced engine efficiency, and potential long-term damage to engine components if not addressed.

10. Is this a common issue for the 2016 GMC Sierra?

The P14A0 code is not extremely common but can occur, especially in vehicles with high mileage or poor maintenance of the cooling system. Regular inspections can help prevent it.