AutoCodes – Nissan – P0605 2012 Nissan Sentra

P0605 2012 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 2012 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 4,397

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 2012 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 2012 Nissan Sentra - Engine Control Module Fault - AutoCodes.com — P0605 2012 Nissan Sentra Code - Engine Control Module Fault

What does this mean?

What are the Possible Causes of the DTC P0605 2012 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 2012 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 2012 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 2012 Nissan Sentra code?

Need more information on how to fix the P0605 2012 Nissan Sentra code? Get Access to Factory Service Manuals

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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 2012 Nissan Sentra Code

What does the OBDII code P0605 mean for a 2012 Nissan Sentra?

The code P0605 indicates a fault in the Engine Control Module (ECM), suggesting that the module has detected an internal error or malfunction.

What are the common symptoms of the P0605 code in a 2012 Nissan Sentra?

Common symptoms may include the check engine light being illuminated, poor engine performance, reduced fuel efficiency, and difficulty starting the vehicle.

What can cause the P0605 code to trigger in a Nissan Sentra?

Possible causes include a defective ECM, poor electrical connections, corroded wiring, or issues with the vehicle's power supply.

How can I diagnose the P0605 code in my 2012 Nissan Sentra?

To diagnose the P0605 code, use an OBDII scanner to confirm the code, check for other related codes, inspect the ECM connections and wiring, and test the ECM for proper function.

Is it safe to drive a 2012 Nissan Sentra with the P0605 code?

It is generally advised to avoid driving the vehicle until the issue is resolved, as it may lead to further engine performance problems or potential damage.

What are some common repair tips for the P0605 code?

Repairs may include checking and cleaning electrical connections, repairing or replacing damaged wiring, and if necessary, replacing the ECM.

Can a software update fix the P0605 code issue?

Yes, sometimes a software update from the manufacturer can resolve internal ECM issues, so checking for updates is a good first step.

What should I do if replacing the ECM doesn't fix the P0605 code?

If replacing the ECM doesn't resolve the issue, further diagnosis may be needed to check for underlying electrical problems, such as shorts or battery issues.

How much does it typically cost to repair the P0605 code in a 2012 Nissan Sentra?

Repair costs can vary widely; simple wiring repairs may cost a few hundred dollars, while ECM replacement might range from $500 to over $1,000, depending on labor and parts.