AutoCodes – Generic – P0602

P0602 Code - Control Module Programming Error

Quick Answer

The Engine Control Module (ECM) monitors itself for programming errors. Common causes include Engine Control Module (ECM) not programmed, Engine Control Module program, 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 indicates Control Module Programming Error.
Common causes: Common causes include Engine Control Module (ECM) not programmed, Engine Control Module program, 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 43,253

How popular is this code, among other codes? Medium

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 Aug 03, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
Comments
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Code P0602 Description

The Engine Control Module (ECM) monitors itself for programming errors. The Diagnostic Trouble Code (DTC) indicates a programming error within the Engine Control Module.

OBDII Code P0602 - Control Module Programming Error - AutoCodes.com — P0602 Code - Control Module Programming Error

What does this mean?

What are the Possible Causes of the DTC P0602?

Engine Control Module (ECM) not programmed
Engine Control Module program
Faulty Engine Control Module
Wrong Engine Control Module

How to Fix the DTC P0602?

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 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.

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Information for Specific Makes

P0602 Acura — Powertrain Control Module Programming Error
P0602 Buick — Control Module Not Programmed
P0602 Cadillac — Control Module Not Programmed
P0602 Chevrolet — Control Module Not Programmed
P0602 Chrysler — Powertrain Control Module Programming Error
P0602 Dodge — Powertrain Control Module Programming Error
P0602 Ford — Powertrain Control Module Programming Error
P0602 GMC — Control Module Not Programmed
P0602 Honda — Powertrain Control Module Programming Error
P0602 Isuzu — Control Module Programming Error
P0602 Jeep — Powertrain Control Module Programming Error
P0602 KIA — Control Module Programming Error
P0602 Lincoln — Powertrain Control Module Programming Error
P0602 Mazda — Control Module Programming Error
P0602 Mercedes-Benz — Control Module Programming Error
P0602 Mercury — Powertrain Control Module Programming Error
P0602 Mitsubishi — Control Module Programming Error
P0602 Pontiac — Powertrain Control Module Programming Error
P0602 RAM — Powertrain Control Module Programming Error
P0602 Saab — Control Module Not Programmed
P0602 Saturn — Powertrain Control Module Programming Error
P0602 Subaru — Control Module Programming Error

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.