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P0606 Chevrolet Code - Control Module Processor Performance

Quick Answer

The P0606 code for Chevrolet vehicles indicates a problem with the control module processor performance. Common causes include Electrical Faults: Issues with the electrical connections to the control module can disrupt its performance and trigger the P0606 code, Software Glitches: Software errors or corruption within the ECM can cause the processor to malfunction, Wiring Issues: Damaged or frayed wiring connected to the control module can interfere with its operation. 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 Chevrolet indicates Control Module Processor Performance.
Common causes
Common causes include Electrical Faults: Issues with the electrical connections to the control module can disrupt its performance and trigger the P0606 code, Software Glitches: Software errors or corruption within the ECM can cause the processor to malfunction, Wiring Issues: Damaged or frayed wiring connected to the control module can interfere with its operation.
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 06, 2024
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Code P0606 Chevrolet Description

The P0606 code for Chevrolet vehicles indicates a problem with the control module processor performance. The control module, also known as the engine control module (ECM) or powertrain control module (PCM), is a crucial component of the vehicle's electronic systems. It is responsible for monitoring and controlling various functions, such as engine performance, emissions, fuel efficiency, and more. When the control module processor performance is compromised, it can lead to a range of issues that affect the overall operation of the vehicle.

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

Common Causes of P0606 Chevrolet

  1. Electrical Faults: Issues with the electrical connections to the control module can disrupt its performance and trigger the P0606 code.
  2. Software Glitches: Software errors or corruption within the ECM can cause the processor to malfunction.
  3. Wiring Issues: Damaged or frayed wiring connected to the control module can interfere with its operation.
  4. Faulty ECM: A defective or failing ECM can also lead to control module processor performance issues.

Symptoms of P0606 Chevrolet

  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. Poor Performance: The vehicle may experience a decrease in performance, including reduced power output, rough idling, or hesitation during acceleration.
  3. Increased Emissions: A faulty control module processor can lead to increased emissions from the vehicle, which may result in a failed emissions test.
  4. Stalling: The engine may stall unexpectedly, especially at idle or low speeds.
  5. Difficulty Starting: The vehicle may have difficulty starting, requiring multiple attempts before the engine turns over.

How to Fix P0606 Chevrolet

  1. Diagnose the Issue: The first step is to use a diagnostic scanner to retrieve the trouble codes and perform a thorough inspection of the control module and related components.
  2. Check for Loose Connections: Inspect the electrical connections to the control module for any signs of damage or corrosion and ensure they are securely connected.
  3. Test the Control Module: The control module may need to be tested using specialized equipment to determine if it is functioning correctly.
  4. Repair or Replace Components: Depending on the diagnosis, repair any damaged wiring, reflash the ECM if necessary, or replace the control module altogether.
  5. Clear Codes and Test Drive: After the repairs are completed, clear the trouble codes from the ECM memory and test drive the vehicle to ensure the issue has been resolved.

Cost to Fix P0606 Chevrolet

The typical repair costs for addressing the P0606 code can range from $200 to $800, including parts and labor. Keep in mind that the specific 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 is advisable to check with local shops for a more accurate estimate based on your specific circumstances. Additionally, rates may be higher at dealerships or in metropolitan areas, while independent shops may offer more competitive pricing.

What does this mean?

Tech Notes for P0606 Chevrolet

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

Need more information about the P0606 Chevrolet code?

Need more information on how to fix the P0606 Chevrolet code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P0606 Chevrolet code diagnosed by a professional: Find a repair shop in your area

Information for Specific Chevrolet Models

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 Chevrolet Code

1. What are the common symptoms of OBDII code P0606 in a Chevrolet vehicle?

- Common symptoms include the Check Engine light illuminating, engine performance issues, and possible stalling or rough idling.

2. What does the OBDII code P0606 Chevrolet indicate about the Control Module Processor Performance?

- This code indicates that there is a malfunction in the Engine Control Module (ECM) or Powertrain Control Module (PCM) processor performance.

3. What are the possible causes of OBDII code P0606 in a Chevrolet?

- Possible causes include a faulty ECM/PCM, software issues, wiring problems, a dead or weak battery, or a faulty ground connection.

4. How can I diagnose the OBDII code P0606 in my Chevrolet?

- Diagnosis typically involves using an OBDII scanner to retrieve the code, checking for any other related codes, and performing a thorough inspection of the ECM/PCM connections and wiring.

5. Can I still drive my Chevrolet with the OBDII code P0606 present?

- It is not recommended to drive the vehicle with this code present, as it can lead to potential engine performance issues and further damage if left unresolved.

6. How can I repair OBDII code P0606 in my Chevrolet?

- Repair options may include reprogramming the ECM/PCM, replacing the ECM/PCM, checking and repairing any wiring issues, and ensuring proper battery and ground connections.

7. Is it safe to clear the OBDII code P0606 in my Chevrolet using an OBDII scanner?

- Clearing the code with a scanner may temporarily turn off the Check Engine light, but it will not fix the underlying issue causing the code. It is recommended to diagnose and repair the problem first.

8. Can a DIY enthusiast fix the OBDII code P0606 in a Chevrolet?

- Depending on the cause of the code, some DIY enthusiasts may be able to address it by checking and repairing wiring connections or replacing the ECM/PCM. However, more complex issues may require professional assistance.

9. How much does it cost to fix OBDII code P0606 in a Chevrolet at a repair shop?

- The cost of repairs can vary depending on the exact cause of the code and the labor rates of the repair shop. It is recommended to get a diagnostic assessment to determine the specific cost.

10. Will OBDII code P0606 cause my Chevrolet to fail an emissions test?

- Yes, the presence of this code can cause your vehicle to fail an emissions test, as it indicates a potential issue with the engine control module that affects emissions control systems.

Discuss the causes and fixes for P0606 Chevrolet OBDII Code

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  • 2008 Chevy Silverado had camshaft position sensor code. I changed the sensor and it ran fine. Next morning truck suddenly died and would not start or turn over. Code ran crankshaft position sensor. Changed the crankshaft position sensor and the truck ran fine again for 20 minutes and died again and will not start or turn over again. Now code shows p0606 ECM. When trying to start the traction control showed disabled. Would a ECM relearn resolve my issues. or is a new ECM required?

    Reply to Comment

  • Reprogramming the ECM is definitely the first step. You should call your local dealer, the ECM may still be under warranty. It's worth to try.

    Reply to Comment

  • comment résoudre le code defaut p0606 je viens de changer le module ces une chevrolet equinox année 2012 4 cylindre moteur essence

    Reply to Comment

    • Merci pour votre question. Le code P0606 sur votre Chevrolet Equinox 2012 (moteur 4 cylindres essence) indique un problème avec le processeur du module de commande moteur (ECM). Même après avoir remplacé le module, ce code peut toujours apparaître si certaines étapes ne sont pas suivies.

      Voici ce qu’il faut vérifier :

      • Après l’installation d’un nouveau module, il est souvent nécessaire de programmer ou "flasher" le module avec les bons fichiers logiciels pour votre véhicule spécifique. Le simple remplacement physique du module ne suffit pas.
      • Vérifiez aussi les connexions et le câblage vers le module. Une mauvaise masse, des broches sales ou tordues peuvent causer ce code.
      • Il est également important de vérifier si le module que vous avez installé est correctement compatible avec votre modèle exact.
      • Enfin, une batterie faible ou des variations de tension peuvent provoquer ce genre de problème. Assurez-vous que la batterie et le système de charge fonctionnent bien.

      Je vous recommande de retourner chez un professionnel avec un outil de diagnostic avancé pour programmer correctement le nouveau module et vérifier toutes les alimentations et masses.

      Bon courage!

      Reply to Comment