AutoCodes – GMC – P0605 GMC

P0605 GMC Code - Control Module Programming Read Only Memory Performance

Quick Answer

This diagnostic applies to internal microprocessor integrity conditions within the device. Common causes include Low battery voltage, Reprogram Powertrain Control Module (PCM), Faulty Powertrain 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: P0605 GMC indicates Control Module Programming Read Only Memory Performance.
Common causes: Common causes include Low battery voltage, Reprogram Powertrain Control Module (PCM), Faulty Powertrain 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 800

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 Jul 26, 2021

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P0605 GMC Description

This diagnostic applies to internal microprocessor integrity conditions within the device. This diagnostic also addresses if the device is not programmed. The device 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 device detects an internal malfunction or incomplete programming.

OBDII Code P0605 GMC - Control Module Programming Read Only Memory Performance - AutoCodes.com — P0605 GMC Code - Control Module Programming Read Only Memory Performance

What does this mean?

What are the Possible Causes of the DTC P0605 GMC?

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

How to Fix the DTC P0605 GMC?

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 P0605 GMC 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 P0605 GMC code?

Need more information on how to fix the P0605 GMC 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 P0605 GMC Code

1. What does OBDII code P0605 GMC mean?

The code P0605 GMC indicates a Control Module Programming Read Only Memory Performance issue.

2. What are common symptoms of P0605 GMC?

Common symptoms of P0605 GMC may include the vehicle stalling, poor engine performance, or difficulties starting the engine.

3. What are possible causes of the P0605 GMC code?

Possible causes of the P0605 GMC code include a faulty Engine Control Module (ECM), corrupted software in the ECM, or a poor connection between the ECM and other components.

4. How can I diagnose the P0605 GMC code?

Diagnosing the P0605 GMC code involves using an OBDII scanner to read the code and then checking the ECM for any visible signs of damage or loose connections.

5. Can I still drive my vehicle with the P0605 GMC code?

It is not recommended to drive your vehicle with the P0605 GMC code as it can lead to further damage and potential safety hazards.

6. How can I repair the P0605 GMC code?

Repairing the P0605 GMC code may involve reprogramming or replacing the ECM, ensuring all connections are secure, and clearing the code with an OBDII scanner.

7. Can I fix the P0605 GMC code myself?

While some DIY enthusiasts may attempt to address the P0605 GMC code themselves, it is recommended to consult a professional mechanic for accurate diagnosis and repair.

8. Will resetting the code make it go away permanently?

Resetting the code may temporarily clear the P0605 GMC code, but if the underlying issue is not addressed, the code is likely to reappear.

9. How much does it cost to repair the P0605 GMC code?

The cost of repairing the P0605 GMC code can vary depending on the extent of the issue, the labor rates in your area, and whether you choose to replace or reprogram the ECM.

10. Is the P0605 GMC code a serious issue?

The P0605 GMC code should be addressed promptly to prevent further damage to your vehicle and ensure optimal performance.