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U1814 2014 Chevrolet Silverado Code - Powertrain Wake-Up Communication Circuit

Quick Answer

The U1814 diagnostic trouble code (DTC) in a 2014 Chevrolet Silverado relates to the Powertrain Wake-Up Communication Circuit. Common causes include Damaged wiring or connectors in the communication circuit, Faulty PCM, Malfunctioning module in the vehicle. 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
U1814 2014 Chevrolet Silverado indicates Powertrain Wake-Up Communication Circuit.
Common causes
Common causes include Damaged wiring or connectors in the communication circuit, Faulty PCM, Malfunctioning module in the vehicle.
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 15, 2024
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Code U1814 2014 Chevrolet Silverado Description

The U1814 diagnostic trouble code (DTC) in a 2014 Chevrolet Silverado relates to the Powertrain Wake-Up Communication Circuit. This code indicates a communication issue within the powertrain control module (PCM) or between the PCM and other modules in the vehicle. The Powertrain Wake-Up Communication Circuit is responsible for ensuring that all control modules in the vehicle are properly communicating and waking up when the vehicle is started.

OBDII Code U1814 2014 Chevrolet Silverado - Powertrain Wake-Up Communication Circuit
U1814 2014 Chevrolet Silverado Code - Powertrain Wake-Up Communication Circuit

Common Causes of U1814 2014 Chevrolet Silverado

  1. Damaged wiring or connectors in the communication circuit
  2. Faulty PCM
  3. Malfunctioning module in the vehicle
  4. Software glitch in the control modules

Symptoms of U1814 2014 Chevrolet Silverado

  1. Vehicle not starting or difficulty starting
  2. Poor acceleration
  3. Rough idling
  4. Stalling
  5. Loss of power while driving

How to Fix U1814 2014 Chevrolet Silverado

  1. Begin by conducting a thorough inspection of the wiring and connectors in the communication circuit to identify any damage or corrosion. Repair or replace any faulty components.
  2. Check the PCM for any signs of damage or malfunction. If necessary, replace the PCM with a new unit.
  3. Test the various modules in the vehicle to determine if any are malfunctioning. Replace any faulty modules as needed.
  4. Perform a software update or reflash on the control modules to address any potential glitches in the system.
  5. Clear the DTC and test drive the vehicle to ensure that the issue has been resolved.

Cost to Fix U1814 2014 Chevrolet Silverado

The typical repair costs for addressing the U1814 code in a 2014 Chevrolet Silverado can vary depending on the specific cause of the issue. On average, the cost of parts and labor for this repair could range from $200 to $800. However, it's important to note that diagnosis time and labor rates at auto repair shops can vary based on factors such as location, vehicle make and model, and engine type. It's recommended to check with local auto repair shops for a more accurate estimate. Generally, auto repair shops charge between $80 and $150 per hour for labor, but rates may be higher in metropolitan areas or at dealerships, while independent shops may offer lower rates.

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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 U1814 2014 Chevrolet Silverado Code

1. What does the OBDII code U1814 for a 2014 Chevrolet Silverado mean?

The U1814 code indicates a problem with the Powertrain Wake-Up Communication Circuit in the vehicle.

2. What are the common symptoms of a U1814 code in a 2014 Chevrolet Silverado?

Common symptoms include difficulty starting the vehicle, intermittent electrical issues, and possible illumination of the check engine light.

3. What are the possible causes of the U1814 code in a 2014 Chevrolet Silverado?

Possible causes include a faulty Powertrain Control Module (PCM), wiring issues, loose connections, or a malfunctioning communication module.

4. How can I diagnose the U1814 code in my 2014 Chevrolet Silverado?

Diagnosis typically involves using a scan tool to read the code, checking for related codes or symptoms, and inspecting the wiring and connections related to the Powertrain Wake-Up Communication Circuit.

5. Can I still drive my 2014 Chevrolet Silverado with a U1814 code?

It is not recommended to drive the vehicle with an unresolved U1814 code, as it may lead to further electrical issues or potential starting problems.

6. How can I repair the U1814 code in my 2014 Chevrolet Silverado?

Repairing the U1814 code may involve repairing or replacing damaged wiring, ensuring proper connections, or replacing the Powertrain Control Module (PCM) if necessary.

7. Is it possible to reset the U1814 code in a 2014 Chevrolet Silverado without repairs?

While clearing the code with a scan tool may temporarily turn off the check engine light, it will not fix the underlying issue causing the U1814 code.

8. Are there any common mistakes to avoid when dealing with the U1814 code in a 2014 Chevrolet Silverado?

Avoid neglecting proper diagnosis, overlooking wiring issues, or ignoring related codes when addressing the U1814 code to prevent further complications.

9. How much does it typically cost to repair a U1814 code in a 2014 Chevrolet Silverado?

The cost of repairing a U1814 code can vary depending on the underlying cause, but it may range from a simple wiring repair to a more expensive PCM replacement.

10. Can a DIY enthusiast fix the U1814 code in a 2014 Chevrolet Silverado?

While some simple wiring repairs may be possible for experienced DIY enthusiasts, diagnosing and repairing the U1814 code may require professional expertise and specialized tools.

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