AutoCodes – Nissan – P0605 2007 Nissan Sentra

P0605 2007 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 2007 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.

Save to My Repairs My Repairs

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

Code Popularity 4,598

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
Add Comment

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

Code P0605 2007 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 2007 Nissan Sentra - Engine Control Module Fault - AutoCodes.com — P0605 2007 Nissan Sentra Code - Engine Control Module Fault

What does this mean?

What are the Possible Causes of the DTC P0605 2007 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 2007 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 2007 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 2007 Nissan Sentra code?

Need more information on how to fix the P0605 2007 Nissan Sentra code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P0605 2007 Nissan Sentra 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 2007 Nissan Sentra Code

1. What does the OBDII code P0605 mean on a 2007 Nissan Sentra?

The P0605 code indicates an internal fault in the Engine Control Module (ECM), specifically with the Read-Only Memory (ROM) of the module.

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

Symptoms may include poor engine performance, stalling, failure to start, a check engine light, and potentially entering limp mode.

3. What causes the P0605 code to appear in a 2007 Nissan Sentra?

Common causes include a malfunctioning ECM, corrupted or outdated software, electrical issues like poor connections or damaged wiring, or, in rare cases, interference from aftermarket modifications.

4. Can a bad battery cause the P0605 code in a Nissan Sentra?

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

5. How do I diagnose a P0605 code in my 2007 Nissan Sentra?

Start by inspecting the ECM connections and wiring for damage or corrosion. Use a scan tool to check for related codes and clear the code to see if it returns. If the code persists, testing or replacement of the ECM may be necessary.

6. Can I drive my 2007 Nissan Sentra with a P0605 code?

Driving with a P0605 code is not recommended, as it may lead to erratic engine behavior, reduced performance, or the vehicle stalling unexpectedly.

7. How much does it cost to fix a P0605 code on a 2007 Nissan Sentra?

Repair costs can vary widely. If the ECM needs replacement, the cost can range from $500 to $1,500, including parts and labor. Cheaper fixes, like repairing wiring or updating software, may cost significantly less.

8. Can the P0605 code be fixed by reprogramming the ECM?

In some cases, reprogramming or updating the ECM software can resolve the issue if the fault is caused by corrupted data or outdated programming.

9. Does a P0605 code mean I need a new ECM for my 2007 Nissan Sentra?

Not necessarily. The issue could be caused by wiring problems, software corruption, or low voltage. Proper diagnostics should be performed before replacing the ECM.

10. Can I clear the P0605 code myself on a Nissan Sentra?

You can clear the code with an OBDII scan tool, but if the underlying issue isnâ€™t resolved, the code will likely return.