AutoCodes – Nissan – P0605 2008 Nissan Altima Sedan

P0605 2008 Nissan Altima Sedan 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 2008 Nissan Altima Sedan 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.

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Code Popularity 4,735

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
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Code P0605 2008 Nissan Altima Sedan 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 2008 Nissan Altima Sedan - Engine Control Module Fault - AutoCodes.com — P0605 2008 Nissan Altima Sedan Code - Engine Control Module Fault

What does this mean?

What are the Possible Causes of the DTC P0605 2008 Nissan Altima Sedan?

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 2008 Nissan Altima Sedan?

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 2008 Nissan Altima Sedan 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 2008 Nissan Altima Sedan 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 2008 Nissan Altima Sedan Code

1. What does the OBDII code P0605 indicate on a 2008 Nissan Altima Sedan?

The P0605 code on a 2008 Nissan Altima Sedan indicates a fault in the Engine Control Module (ECM) memory, suggesting that there is an issue with the ROM (Read-Only Memory) part of the module.

2. What are common symptoms of the P0605 code in a 2008 Nissan Altima Sedan?

Common symptoms include the Check Engine Light turning on, poor engine performance, the engine failing to start, or the vehicle entering a failsafe mode.

3. How serious is the P0605 code for a 2008 Nissan Altima Sedan?

The P0605 code is quite serious as it can result in the vehicle's engine having starting issues, poor performance, or becoming non-operational, which might render the vehicle unreliable or unsafe to drive.

4. What could cause a P0605 code to appear on a 2008 Nissan Altima Sedan?

Possible causes for a P0605 code include a failure within the ECM itself, such as corrupted or damaged memory, or issues related to power supply and voltage irregularities to the ECM.

5. How can the P0605 code be diagnosed in a 2008 Nissan Altima Sedan?

Diagnosing the P0605 code typically involves using a professional OBD-II scanner to confirm the code, checking the ECM for any visible signs of damage or corrosion, and verifying the integrity of its connections and power supply.

6. What are the typical steps to repair a P0605 code in a 2008 Nissan Altima Sedan?

Repair steps usually include checking and repairing any electrical issues related to the ECM, such as loose connections or faulty wiring, and often replacing the ECM if it is determined to be faulty.

7. Can I drive my 2008 Nissan Altima Sedan with a P0605 code?

It is not recommended to drive your vehicle with a P0605 code, as the engine may experience severe performance issues or fail to start, which could leave you stranded or lead to further damage.

8. Is replacing the ECM the only solution for fixing a P0605 code in a 2008 Nissan Altima Sedan?

While replacing the ECM is a common solution, it is important first to thoroughly diagnose other potential issues, such as wiring or power supply problems, as these might also trigger the code.

9. How much does it typically cost to resolve a P0605 code in a 2008 Nissan Altima Sedan?

The cost can vary widely, but replacing an ECM can be expensive, often ranging from $500 to $1500, including parts and labor, depending on the service provider and geographic location.