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U1814 2015 Chevrolet Silverado Code - Powertrain Wake-Up Communication Circuit

Quick Answer

The U1814 diagnostic trouble code (DTC) in a 2015 Chevrolet Silverado relates to the Powertrain Wake-Up Communication Circuit. Common causes include Damaged wiring or connectors in the wake-up communication circuit, Faulty powertrain control module (PCM), Software glitch in the PCM or related systems. 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 2015 Chevrolet Silverado indicates Powertrain Wake-Up Communication Circuit.
Common causes
Common causes include Damaged wiring or connectors in the wake-up communication circuit, Faulty powertrain control module (PCM), Software glitch in the PCM or related systems.
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 11, 2024
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Code U1814 2015 Chevrolet Silverado Description

The U1814 diagnostic trouble code (DTC) in a 2015 Chevrolet Silverado relates to the Powertrain Wake-Up Communication Circuit. This code indicates a communication issue within the vehicle's powertrain system, specifically with the wake-up circuit. In modern vehicles, the powertrain control module (PCM) communicates with various components and systems in the vehicle to ensure proper functionality and performance. The wake-up communication circuit is responsible for waking up or initializing these systems when the vehicle is started or when certain conditions are met.

OBDII Code U1814 2015 Chevrolet Silverado - Powertrain Wake-Up Communication Circuit
U1814 2015 Chevrolet Silverado Code - Powertrain Wake-Up Communication Circuit

Common Causes of U1814 2015 Chevrolet Silverado

  1. Damaged wiring or connectors in the wake-up communication circuit
  2. Faulty powertrain control module (PCM)
  3. Software glitch in the PCM or related systems
  4. Malfunctioning sensor in the powertrain system
  5. Corrosion or moisture in the electrical connections

Symptoms of U1814 2015 Chevrolet Silverado

  1. Difficulty starting the vehicle
  2. Engine stalling or rough idling
  3. Reduced fuel efficiency
  4. Warning lights on the dashboard (such as the check engine light)
  5. Unresponsive powertrain components (such as transmission shifting irregularities)

How to Fix U1814 2015 Chevrolet Silverado

  1. Diagnose the issue using a scan tool to retrieve the DTC and pinpoint the root cause.
  2. Inspect the wiring and connectors in the wake-up communication circuit for damage or corrosion.
  3. Test the powertrain control module (PCM) for proper functionality and software updates.
  4. Replace any faulty components, such as sensors or wiring, as needed.
  5. Clear the DTC and perform a road test to ensure the issue has been resolved.

Cost to Fix U1814 2015 Chevrolet Silverado

The typical repair costs for addressing the U1814 code in a 2015 Chevrolet Silverado can range from $150 to $500, depending on the specific cause of the issue and the cost of parts and labor. This estimate includes diagnostic time, parts replacement, and labor costs. It's important to note that rates for auto repairs can vary based on location, the vehicle's make and model, and the type of engine. It's recommended to obtain quotes from local auto repair shops for a more accurate estimate.

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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 2015 Chevrolet Silverado Code

1. What does the OBDII code U1814 for a 2015 Chevrolet Silverado mean?

The code U1814 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 2015 Chevrolet Silverado?

Common symptoms of a U1814 code may include issues with starting the vehicle, poor engine performance, and possible illumination of the check engine light.

3. What are some possible causes of the U1814 code in a 2015 Chevrolet Silverado?

Possible causes of the U1814 code can 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 2015 Chevrolet Silverado?

Diagnosing the U1814 code typically involves checking the wiring and connections related to the Powertrain Wake-Up Communication Circuit, testing the communication module, and inspecting the PCM for any signs of damage.

5. Can I still drive my 2015 Chevrolet Silverado with a U1814 code?

It is not recommended to drive your vehicle with an unresolved U1814 code, as it can lead to further damage and potential safety issues. It is best to address the issue promptly.

6. How can I repair the U1814 code in my 2015 Chevrolet Silverado?

Repairing the U1814 code may involve fixing any wiring or connection issues, replacing a faulty communication module or PCM, and clearing the code with a diagnostic tool.

7. Is it possible to reset the U1814 code in a 2015 Chevrolet Silverado without repairs?

While you can clear the code using a diagnostic tool, it is essential to address the underlying issue causing the U1814 code to prevent it from reoccurring.

8. Will a U1814 code cause my 2015 Chevrolet Silverado to fail an emissions test?

Yes, a U1814 code can cause your vehicle to fail an emissions test, as it indicates a problem with the Powertrain Wake-Up Communication Circuit that can affect emissions control systems.

9. How much does it typically cost to repair a U1814 code in a 2015 Chevrolet Silverado?

The cost of repairing a U1814 code can vary depending on the specific cause of the issue, but it may involve expenses for parts and labor, ranging from a few hundred to over a thousand dollars.

10. Can a DIY enthusiast fix a U1814 code in a 2015 Chevrolet Silverado?

Depending on your skill level and access to tools, you may be able to address simpler causes of the U1814 code, such as checking and securing connections. However, more complex issues may require professional intervention.

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