AutoCodes – Chevrolet – P0604 2015 Chevrolet Silverado

P0604 2015 Chevrolet Silverado Code - Control Module Random Access Memory Performance

Quick Answer

This diagnostic applies to internal microprocessor integrity conditions within the Engine Control Module (ECM). Common causes include Low battery voltage, Reprogram Engine Control Module (ECM), Faulty Engine Control Module. 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: P0604 2015 Chevrolet Silverado indicates Control Module Random Access Memory Performance.
Common causes: Common causes include Low battery voltage, Reprogram Engine Control Module (ECM), Faulty Engine Control Module.
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.

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Code Popularity 357

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Mar 29, 2024

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code P0604 2015 Chevrolet Silverado Description

This diagnostic applies to internal microprocessor integrity conditions within the Engine Control Module (ECM). This diagnostic also addresses if the ECM is not programmed. The ECM monitors its ability to read and write to the memory. It also monitors a timing function. No external circuits are involved. The Diagnostic Trouble Code (DTC) will be set when the ECM detects an internal failure or incomplete programming for more than 10 s.

OBDII Code P0604 2015 Chevrolet Silverado - Control Module Random Access Memory Performance - AutoCodes.com — P0604 2015 Chevrolet Silverado Code - Control Module Random Access Memory Performance

What does this mean?

What are the Possible Causes of the DTC P0604 2015 Chevrolet Silverado?

Low battery voltage
Reprogram Engine Control Module (ECM)
Faulty Engine Control Module
Engine Control Module harness is open or shorted
Engine Control Module circuit poor electrical connection

How to Fix the DTC P0604 2015 Chevrolet Silverado?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What does this mean?

Code Tech Notes

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.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0604 2015 Chevrolet Silverado code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

Need more information about the P0604 2015 Chevrolet Silverado code?

Need more information on how to fix the P0604 2015 Chevrolet Silverado code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P0604 2015 Chevrolet Silverado code diagnosed by a professional: Find a repair shop in your area

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 P0604 2015 Chevrolet Silverado Code

1. What are the common symptoms of OBDII code P0604 in a 2015 Chevrolet Silverado?

The common symptoms of code P0604 include check engine light illumination, poor vehicle performance, and possible stalling or rough idling.

2. What does OBDII code P0604 mean for a 2015 Chevrolet Silverado?

Code P0604 indicates a malfunction in the Engine Control Module (ECM) random access memory, affecting the module's ability to perform properly.

3. What are the possible causes of OBDII code P0604 in a 2015 Chevrolet Silverado?

Potential causes of code P0604 include a faulty ECM, damaged wiring or connectors, low voltage issues, or a software malfunction within the control module.

4. How can I diagnose OBDII code P0604 in my 2015 Chevrolet Silverado?

Diagnosing code P0604 typically involves using a diagnostic scanner to retrieve the fault code, checking the ECM connections, inspecting for wiring damage, and testing the ECM for proper functionality.

5. Can I still drive my 2015 Chevrolet Silverado with OBDII code P0604?

It is not recommended to drive your vehicle with an unresolved P0604 code, as it can lead to potential performance issues and further damage to the vehicle's ECM.

6. Is it possible to repair OBDII code P0604 in a 2015 Chevrolet Silverado myself?

While some DIY enthusiasts may attempt to address code P0604 by checking connections and wiring, resolving ECM-related issues often requires specialized tools and expertise, so professional help is recommended.

7. How much does it cost to fix OBDII code P0604 in a 2015 Chevrolet Silverado?

The cost of repairing code P0604 can vary depending on the specific cause of the issue. It may range from a simple wiring repair to a complete ECM replacement, which can be a costly repair.

8. Can a software update fix OBDII code P0604 in a 2015 Chevrolet Silverado?

In some cases, a software update or reprogramming of the ECM may resolve code P0604 if the issue is related to software malfunction. Consult with a professional technician for the most appropriate solution.

9. Will resetting the ECM clear OBDII code P0604 in a 2015 Chevrolet Silverado?

Resetting the ECM may temporarily clear the code, but if the underlying issue causing code P0604 is not addressed, the code is likely to reappear once the ECM detects the problem again.

10. How can I prevent OBDII code P0604 in my 2015 Chevrolet Silverado?

To prevent code P0604, it's important to perform regular vehicle maintenance, address any electrical issues promptly, and avoid jump-starting the vehicle, which can lead to ECM damage.