AutoCodes – Infiniti – P0605 2006 Infiniti G35

P0605 2006 Infiniti G35 Code - Engine Control Module Fault

Quick Answer

The Engine Control Module (ECM) continuously monitors its own internal memory status, internal circuits, and output signals transmitted to the throttle actuator. Common causes include Engine Control Module (ECM) may be faulty, ECM harness power supply circuit is open or shorted, ECM harness ground circuit is open or shorted. 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 2006 Infiniti G35 indicates Engine Control Module Fault.
Common causes: Common causes include Engine Control Module (ECM) may be faulty, ECM harness power supply circuit is open or shorted, ECM harness ground circuit is open or shorted.
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.

Save to My Repairs My Repairs

AI answers can be wrong. Verify repairs with testing. Open full chat

Code Popularity 2,729

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 May 22, 2019

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
Add Comment

💬 Need more help? Ask Coddy for instant answers — it's free!

Code P0605 2006 Infiniti G35 Description

The Engine Control Module (ECM) continuously monitors its own internal memory status, internal circuits, and output signals transmitted to the throttle actuator. This self-check insures that the ECM is functioning properly. If any malfunction is detected, the ECM sets the P0605 code and illuminates the MIL.

OBDII Code P0605 2006 Infiniti G35 - Engine Control Module Fault - AutoCodes.com — P0605 2006 Infiniti G35 Code - Engine Control Module Fault

What does this mean?

What are the Possible Causes of the DTC P0605 2006 Infiniti G35?

Engine Control Module (ECM) may be faulty
ECM harness power supply circuit is open or shorted
ECM harness ground circuit is open or shorted

How to Fix the DTC P0605 2006 Infiniti G35?

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

Try erasing the code first, if the light comes back ON you may have to replace the ECM to repair the problem.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0605 2006 Infiniti G35 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 2006 Infiniti G35 code?

Need more information on how to fix the P0605 2006 Infiniti G35 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P0605 2006 Infiniti G35 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 P0605 2006 Infiniti G35 Code

1. What does the OBDII code P0605 mean on a 2006 Infiniti G35?

P0605 indicates an "Engine Control Module (ECM) Fault," meaning the ECM has detected an internal issue or corruption in its memory.

2. What are the common symptoms of a P0605 code on a 2006 Infiniti G35?

Symptoms may include a check engine light, poor engine performance, reduced fuel efficiency, hard starting, or the engine failing to start.

3. What causes the P0605 code to appear on a 2006 Infiniti G35?

Common causes include a faulty ECM, software corruption, electrical issues such as poor connections or damaged wiring, or a failed ECM reflash.

4. Can a bad battery cause the P0605 code on a 2006 Infiniti G35?

Yes, a weak or failing battery can cause voltage fluctuations that may disrupt the ECM and trigger the P0605 code.

5. How do I diagnose the P0605 code on a 2006 Infiniti G35?

Start by checking the battery and electrical connections, inspect wiring to the ECM, and use a scan tool to verify the code. If necessary, consult a professional for ECM testing.

6. Can the P0605 code be fixed without replacing the ECM on a 2006 Infiniti G35?

In some cases, the issue can be resolved by repairing wiring, cleaning corroded terminals, or reprogramming the ECM. However, if the ECM hardware is damaged, it may need replacement.

7. How much does it cost to fix the P0605 code on a 2006 Infiniti G35?

Costs vary depending on the cause. Reprogramming the ECM may cost $100â€“$200, while ECM replacement can range from $500 to $1,500 including labor.

8. Can I drive my 2006 Infiniti G35 with a P0605 code?

Driving with a P0605 code is not recommended, as it may lead to drivability issues or further damage to the ECM or other components.

9. Will disconnecting the battery clear the P0605 code on a 2006 Infiniti G35?

Disconnecting the battery may temporarily clear the code, but it wonâ€™t fix the underlying issue. The code will likely return if the problem persists.

10. Is the P0605 code common on a 2006 Infiniti G35?

P0605 is relatively rare but can occur due to ECM aging, voltage issues, or improper maintenance. Regular checks on electrical systems can help prevent it.