AutoCodes – Subaru – P0602 Subaru

P0602 Subaru 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 Subaru 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 4,432

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 Aug 03, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P0602 Subaru 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 Subaru - Control Module Programming Error - AutoCodes.com — P0602 Subaru Code - Control Module Programming Error

What does this mean?

What are the Possible Causes of the DTC P0602 Subaru?

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

How to Fix the DTC P0602 Subaru?

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 Subaru 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 Subaru 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 Subaru Code

1. What are the common symptoms of OBDII code P0602 in a Subaru related to a Control Module Programming Error?

- Common symptoms include issues with engine performance, stalling, rough idling, and potential difficulty starting the vehicle.

2. What are the possible causes of the OBDII code P0602 in a Subaru?

- The code P0602 typically indicates a control module programming error, which can be caused by a faulty powertrain control module (PCM), a software issue, or a wiring problem.

3. How can I diagnose the OBDII code P0602 in my Subaru?

- To diagnose the P0602 code, you can use an OBDII scanner to retrieve the code and then perform further testing to determine if the issue lies with the PCM, software, or wiring.

4. Can I still drive my Subaru with the OBDII code P0602 present?

- It is not recommended to drive your Subaru with the P0602 code present, as it can lead to potential engine performance issues and further damage if left unresolved.

5. How can I repair the OBDII code P0602 in my Subaru?

- Repairing the P0602 code often involves reprogramming or replacing the PCM, addressing any software issues, and ensuring the wiring connections are secure and free of damage.

6. Is it possible to reset the OBDII code P0602 in a Subaru without fixing the underlying issue?

- While you can clear the code temporarily with an OBDII scanner, it is crucial to address the root cause of the P0602 code to prevent further problems.

7. Will the OBDII code P0602 in my Subaru cause the check engine light to illuminate?

- Yes, the P0602 code will trigger the check engine light to illuminate on your Subaru's dashboard, indicating a control module programming error.

8. Can a DIY enthusiast repair the OBDII code P0602 in a Subaru?

- Repairing the P0602 code may require advanced diagnostic tools and knowledge, so it is recommended to consult with a professional mechanic or technician for proper diagnosis and repair.

9. How long does it typically take to repair the OBDII code P0602 in a Subaru?

- The repair time for the P0602 code can vary depending on the exact cause of the issue, but it may take a few hours to reprogram or replace the PCM and address any software or wiring problems.

10. Are there any preventive measures to avoid the OBDII code P0602 in a Subaru?

- Regular maintenance, such as keeping the PCM software updated and checking for any wiring issues, can help prevent the occurrence of the P0602 code in your Subaru.