Engine-CodesChevrolet – P0606 2016 Chevrolet Silverado

P0606 2016 Chevrolet Silverado Code - Control Module Processor Performance

Quick Answer

The P0606 diagnostic trouble code (DTC) for a 2016 Chevrolet Silverado refers to a fault in the Engine Control Module (ECM) or Engine Control Unit (ECU) processor. Common causes include Faulty ECM/ECU: The most common cause of the P0606 code is a malfunction in the ECM/ECU processor itself, which may be due to internal defects or software errors, Electrical Issues: Issues with the vehicle's wiring, connectors, or power supply can disrupt the communication between the ECM/ECU and other components, triggering the code, Software Malfunction: Corrupted or outdated software in the ECM/ECU can lead to performance issues and trigger the P0606 code. 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
P0606 2016 Chevrolet Silverado indicates Control Module Processor Performance.
Common causes
Common causes include Faulty ECM/ECU: The most common cause of the P0606 code is a malfunction in the ECM/ECU processor itself, which may be due to internal defects or software errors, Electrical Issues: Issues with the vehicle's wiring, connectors, or power supply can disrupt the communication between the ECM/ECU and other components, triggering the code, Software Malfunction: Corrupted or outdated software in the ECM/ECU can lead to performance issues and trigger the P0606 code.
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.
Table of contents Created and updated by William Orellana on Sep 11, 2024
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Code P0606 2016 Chevrolet Silverado Description

The P0606 diagnostic trouble code (DTC) for a 2016 Chevrolet Silverado refers to a fault in the Engine Control Module (ECM) or Engine Control Unit (ECU) processor. The ECM/ECU is a crucial component in the vehicle's electronic control system, responsible for managing and regulating various engine functions. When the processor performance is compromised, it can lead to a range of issues that affect the vehicle's overall performance and drivability.

OBDII Code P0606 2016 Chevrolet Silverado - Control Module Processor Performance
P0606 2016 Chevrolet Silverado Code - Control Module Processor Performance

Common Causes of P0606 2016 Chevrolet Silverado

  1. Faulty ECM/ECU: The most common cause of the P0606 code is a malfunction in the ECM/ECU processor itself, which may be due to internal defects or software errors.
  2. Electrical Issues: Issues with the vehicle's wiring, connectors, or power supply can disrupt the communication between the ECM/ECU and other components, triggering the code.
  3. Software Malfunction: Corrupted or outdated software in the ECM/ECU can lead to performance issues and trigger the P0606 code.
  4. Voltage Spikes: Sudden voltage spikes or fluctuations in the vehicle's electrical system can damage the ECM/ECU processor and cause it to malfunction.
  5. Environmental Factors: Exposure to extreme temperatures, moisture, or contaminants can affect the ECM/ECU's performance and trigger the code.

Symptoms of P0606 2016 Chevrolet Silverado

  1. Check Engine Light: The most common symptom associated with the P0606 code is the illumination of the Check Engine Light on the vehicle's dashboard.
  2. Reduced Performance: The vehicle may experience a loss of power, hesitation, or sluggish acceleration, indicating a problem with the ECM/ECU processor.
  3. Rough Idling: The engine may idle roughly or inconsistently, causing vibrations or shaking while the vehicle is stationary.
  4. Stalling: The vehicle may stall unexpectedly, especially when coming to a stop or accelerating from a standstill.
  5. Poor Fuel Efficiency: The vehicle may consume more fuel than usual, leading to decreased gas mileage and increased operating costs.

How to Fix P0606 2016 Chevrolet Silverado

  1. Diagnose the Issue: Use a diagnostic scanner to retrieve the trouble codes and perform a thorough inspection of the ECM/ECU and related components.
  2. Check for Wiring Issues: Inspect the wiring harness, connectors, and grounds for any damage, corrosion, or loose connections that may be affecting the ECM/ECU's performance.
  3. Update Software: If the issue is software-related, update or reflash the ECM/ECU with the latest software available from the manufacturer.
  4. Replace ECM/ECU: If the ECM/ECU processor is found to be faulty, replace it with a new unit and reprogram it to match the vehicle's specifications.
  5. Clear Codes: After completing the repairs, clear the trouble codes and perform a test drive to ensure that the issue has been resolved.

Cost to Fix P0606 2016 Chevrolet Silverado

The cost of repairing a P0606 code on a 2016 Chevrolet Silverado can vary depending on the extent of the issue and the specific repairs needed. In general, replacing the ECM/ECU processor can range from $500 to $1500, including parts and labor. Additional costs may apply for diagnostic testing, software updates, and any other necessary repairs. It's recommended to consult with a professional mechanic or auto repair shop for an accurate estimate based on your vehicle's specific requirements. Keep in mind that labor rates can vary between different locations and service providers, so it's advisable to shop around for the best price.

Tech Notes for P0606 2016 Chevrolet Silverado

Check the Powertrain Control Module (PCM) fuse, if the fuse is OK, then try erasing the code first and if the code comes back you may have to reprogram or replace the PCM.



There is a Factory Service Bulletin for the following Chevrolet models:

2010 Chevrolet Express

2011 Chevrolet Express

2011 Chevrolet Silverado

Chevrolet Factory Service Bulletin OBDII Code P0606

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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 P0606 2016 Chevrolet Silverado Code

What does the OBDII code P0606 mean for a 2016 Chevrolet Silverado?

P0606 indicates a problem with the Control Module Processor Performance, meaning the vehicle's powertrain control module (PCM) is malfunctioning or failing.

What are the common symptoms of code P0606 in a 2016 Chevrolet Silverado?

Symptoms may include engine stalling, poor performance, difficulty starting, reduced fuel efficiency, and the check engine light illuminated.

What causes the P0606 code in a 2016 Chevrolet Silverado?

The code can be caused by a faulty PCM, software corruption, electrical issues like damaged wiring or connectors, or power supply problems to the PCM.

Can I drive my 2016 Chevrolet Silverado with the P0606 code?

Driving with this code is not recommended as it may lead to unpredictable engine behavior, stalling, or further damage to the PCM and other components.

How do I diagnose code P0606 in a 2016 Chevrolet Silverado?

Diagnosis typically involves scanning for additional codes, inspecting the PCM for damage, checking the wiring and connectors, and testing the power supply to the PCM.

How is P0606 fixed in a 2016 Chevrolet Silverado?

Repairs may include reprogramming or replacing the PCM, fixing damaged wiring or connectors, or addressing power supply issues.

Does the PCM need to be replaced for code P0606 in a 2016 Chevrolet Silverado?

Not always; the issue may be resolved by reprogramming the PCM or fixing wiring and electrical issues. Replacement is necessary only if the PCM is irreparably damaged.

How much does it cost to repair a P0606 code in a 2016 Chevrolet Silverado?

Costs vary but can range from $300 to $1,200 depending on whether the PCM needs reprogramming or replacement and the labor involved.

Can a dead battery cause code P0606 in a 2016 Chevrolet Silverado?

Yes, a dead or weak battery can cause power supply issues that trigger the P0606 code.

Will clearing the code fix P0606 in a 2016 Chevrolet Silverado?

Clearing the code may temporarily turn off the check engine light, but the underlying issue must be resolved to prevent the code from returning.

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