AutoCodes – Nissan – P0605 2010 Nissan Sentra

P0605 2010 Nissan Sentra 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 2010 Nissan Sentra 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 4,098

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 Sep 02, 2019

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code P0605 2010 Nissan Sentra 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 2010 Nissan Sentra - Engine Control Module Fault - AutoCodes.com — P0605 2010 Nissan Sentra Code - Engine Control Module Fault

What does this mean?

What are the Possible Causes of the DTC P0605 2010 Nissan Sentra?

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 2010 Nissan Sentra?

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 Engine Control Module (ECM) to repair the problem.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0605 2010 Nissan Sentra 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 2010 Nissan Sentra code?

Need more information on how to fix the P0605 2010 Nissan Sentra 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 2010 Nissan Sentra Code

1. What does the OBDII code P0605 mean on a 2010 Nissan Sentra?

P0605 indicates an Engine Control Module (ECM) fault, specifically a problem with the ECMâ€™s internal memory or programming.

2. What are the common symptoms of the P0605 code in a 2010 Nissan Sentra?

Symptoms may include the Check Engine Light being illuminated, engine misfiring, poor performance, stalling, or trouble starting the engine.

3. What causes the P0605 code in a 2010 Nissan Sentra?

Common causes include a malfunctioning ECM, corrupted programming, electrical issues such as damaged wiring or poor connections, or a failed ECM memory module.

4. Can I drive my 2010 Nissan Sentra with the P0605 code?

Itâ€™s not recommended to drive for long periods with this code, as it may lead to erratic engine behavior or poor fuel efficiency, potentially causing further damage.

5. How is the P0605 code diagnosed in a 2010 Nissan Sentra?

A technician will use a scan tool to confirm the code, inspect the ECMâ€™s wiring and connections, check for additional codes, and potentially test the ECM itself for internal failure.

6. How do I fix the P0605 code on a 2010 Nissan Sentra?

Repairs may include reprogramming or updating the ECM firmware, repairing damaged wiring or connectors, or replacing the ECM if it is determined to be faulty.

7. How much does it cost to fix the P0605 code on a 2010 Nissan Sentra?

Repair costs vary, but reprogramming the ECM typically costs $100â€“$200, while replacing the ECM can range from $500 to $1,500, including labor.

8. Can a low battery cause the P0605 code on a 2010 Nissan Sentra?

Yes, a low or failing battery can cause voltage issues that may temporarily trigger the P0605 code, though itâ€™s less common.

9. Does the P0605 code always mean the ECM needs replacement?

No, sometimes reprogramming or fixing electrical issues can resolve the problem without replacing the ECM.

10. What should I do if my 2010 Nissan Sentra shows a P0605 code?

Start by checking the battery and ECM connections for loose or corroded terminals. If the issue persists, consult a professional mechanic for a detailed diagnosis.