AutoCodes – Chevrolet – P0602 2018 Chevrolet Silverado

P0602 2018 Chevrolet Silverado Code - Control Module Not Programmed

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: P0602 2018 Chevrolet Silverado indicates Control Module Not Programmed.
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 493

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
Cost to Diagnose
FAQs
Comments
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Code P0602 2018 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 P0602 2018 Chevrolet Silverado - Control Module Not Programmed - AutoCodes.com — P0602 2018 Chevrolet Silverado Code - Control Module Not Programmed

What does this mean?

What are the Possible Causes of the DTC P0602 2018 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 P0602 2018 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 is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0602 2018 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 P0602 2018 Chevrolet Silverado code?

Need more information on how to fix the P0602 2018 Chevrolet Silverado code? Get Access to Factory Service Manuals

Need Help with the Code?

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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 P0602 2018 Chevrolet Silverado Code

What are the common symptoms of OBDII code P0602 in a 2018 Chevrolet Silverado?

Common symptoms include the check engine light turning on, issues with vehicle performance, and potential communication problems with various control modules.

What does the OBDII code P0602 indicate in a 2018 Chevrolet Silverado?

OBDII code P0602 indicates that the Engine Control Module (ECM) has detected that the Control Module is not programmed or has an internal programming error.

What are the possible causes of OBDII code P0602 in a 2018 Chevrolet Silverado?

Possible causes include a faulty or incorrectly programmed ECM, issues with the software in the ECM, wiring problems, or a poor connection between the ECM and other control modules.

How can I diagnose OBDII code P0602 in my 2018 Chevrolet Silverado?

Diagnosis typically involves using a diagnostic scanner to retrieve the trouble codes, checking for any related codes or symptoms, inspecting the ECM and its connections, and potentially reprogramming or replacing the ECM.

Can I still drive my 2018 Chevrolet Silverado with an OBDII code P0602?

It is not recommended to continue driving the vehicle with this code present, as it can lead to further issues and potentially affect the vehicle's performance and safety.

How do I repair OBDII code P0602 in a 2018 Chevrolet Silverado?

Repair options may include reprogramming the ECM, replacing the ECM if necessary, checking and repairing any wiring or connection issues, and clearing the trouble codes.

Is it possible to reset OBDII code P0602 in a 2018 Chevrolet Silverado without fixing the underlying issue?

While you can clear the trouble code with a diagnostic scanner, it is not advisable as the issue causing the code will likely persist and may lead to further problems down the line.

Can a DIY enthusiast fix OBDII code P0602 in a 2018 Chevrolet Silverado?

Depending on your skill level and access to tools, some DIY enthusiasts may be able to address this code by checking connections, reprogramming the ECM, or replacing it if necessary. However, professional help is recommended for more complex issues.

What should I do if OBDII code P0602 keeps returning in my 2018 Chevrolet Silverado after repairs?

If the code keeps coming back after repairs, it may indicate that the underlying issue was not fully resolved. Further diagnosis may be needed to identify and address the root cause of the problem.