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U1814 2016 Chevrolet Silverado Code - Powertrain Wake-Up Communication Circuit

Quick Answer

The U1814 diagnostic trouble code (DTC) for a 2016 Chevrolet Silverado relates to the Powertrain Wake-Up Communication Circuit. Common causes include Faulty powertrain control module, Wiring or connection issues in the wake-up communication circuit, Corrosion or damage to connectors. 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 2016 Chevrolet Silverado indicates Powertrain Wake-Up Communication Circuit.
Common causes
Common causes include Faulty powertrain control module, Wiring or connection issues in the wake-up communication circuit, Corrosion or damage to connectors.
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 13, 2024
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Code U1814 2016 Chevrolet Silverado Description

The U1814 diagnostic trouble code (DTC) for a 2016 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 control module is responsible for controlling various functions within the engine and transmission systems, such as fuel injection, ignition timing, and shifting points. When there is a problem with the wake-up communication circuit, it can lead to issues with starting the vehicle, poor performance, and potential safety concerns.

OBDII Code U1814 2016 Chevrolet Silverado - Powertrain Wake-Up Communication Circuit
U1814 2016 Chevrolet Silverado Code - Powertrain Wake-Up Communication Circuit

Common Causes of U1814 2016 Chevrolet Silverado

  1. Faulty powertrain control module
  2. Wiring or connection issues in the wake-up communication circuit
  3. Corrosion or damage to connectors
  4. Electrical interference from aftermarket accessories
  5. Software glitches in the PCM

Symptoms of U1814 2016 Chevrolet Silverado

  1. Engine stalling or rough idling
  2. Difficulty starting the vehicle
  3. Reduced fuel efficiency
  4. Illumination of the check engine light
  5. Loss of power or acceleration

How to Fix U1814 2016 Chevrolet Silverado

  1. Begin by conducting a thorough inspection of the wiring and connectors in the wake-up communication circuit to check for any visible damage or corrosion.
  2. Use a multimeter to test the continuity and resistance of the circuit to identify any faulty components.
  3. If no issues are found with the wiring, proceed to diagnose the powertrain control module for any internal faults.
  4. Replace any damaged wiring, connectors, or the powertrain control module as needed.
  5. Clear the DTC from the PCM memory and perform a test drive to ensure the issue has been resolved.

Cost to Fix U1814 2016 Chevrolet Silverado

The cost of repairing a Powertrain Wake-Up Communication Circuit issue can vary depending on the specific cause of the problem. In general, the cost of parts for this repair can range from $100 to $500, with labor costs adding an additional $100 to $300. Overall, the total repair cost could be anywhere from $200 to $800. It's important to note that diagnostic time and labor rates at auto repair shops can vary, so it's recommended to obtain quotes from multiple sources to ensure a competitive price.

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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 2016 Chevrolet Silverado Code

1. What does the OBDII code U1814 on a 2016 Chevrolet Silverado mean?

The code U1814 indicates a fault in the Powertrain Wake-Up Communication Circuit of the vehicle.

2. What are the common symptoms of a U1814 trouble code in a 2016 Chevrolet Silverado?

Common symptoms of the U1814 code may include issues with starting the vehicle, intermittent loss of power, or problems with the transmission shifting.

3. What are the possible causes of the U1814 trouble code in a 2016 Chevrolet Silverado?

Possible causes of the U1814 code include a faulty Powertrain Control Module (PCM), damaged wiring or connectors in the communication circuit, or a malfunctioning sensor.

4. How can I diagnose the U1814 trouble code on my 2016 Chevrolet Silverado?

Diagnosing the U1814 code typically involves using a diagnostic scanner to retrieve the trouble codes, checking the wiring and connectors in the communication circuit, and testing the sensors for proper functioning.

5. Can I still drive my 2016 Chevrolet Silverado with a U1814 trouble code?

It is not recommended to drive the vehicle with an unresolved U1814 trouble code, as it may lead to further damage or safety hazards. It is best to address the issue promptly.

6. How can I repair the U1814 trouble code on my 2016 Chevrolet Silverado?

Repairing the U1814 code may involve replacing the faulty sensor, repairing damaged wiring or connectors, or reprogramming the PCM to resolve the communication circuit issue.

7. Is it possible to reset the U1814 trouble code on a 2016 Chevrolet Silverado without fixing the underlying issue?

While you can clear the trouble code with a diagnostic scanner, it is important to address the root cause of the problem to prevent the code from reoccurring.

8. Can a DIY enthusiast fix the U1814 trouble code on a 2016 Chevrolet Silverado?

Depending on your skill level and access to tools, some DIY enthusiasts may be able to diagnose and repair the U1814 code. However, complex issues may require professional assistance.

9. How much does it cost to repair the U1814 trouble code on a 2016 Chevrolet Silverado?

The cost of repairing the U1814 code can vary depending on the specific cause of the issue, parts needed for replacement, and labor costs. It is recommended to obtain quotes from professional mechanics.

10. How can I prevent the U1814 trouble code from appearing on my 2016 Chevrolet Silverado in the future?

To prevent the U1814 trouble code from reoccurring, it is essential to perform regular maintenance on your vehicle, address any underlying issues promptly, and follow the manufacturer's recommended service schedule.

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