Engine-Codes.com
Engine-Codes – Nissan – P0603 2009 Nissan Rogue

P0603 2009 Nissan Rogue Code - Engine Control Module Power Supply Circuit

Quick Answer

The P0603 diagnostic trouble code (DTC) for a 2009 Nissan Rogue specifically refers to a malfunction in the Engine Control Module (ECM) power supply circuit. Common causes include Faulty ECM power supply relay, Damaged wiring harness or connectors, Corrosion or loose connections in the power supply circuit. 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
P0603 2009 Nissan Rogue indicates Engine Control Module Power Supply Circuit.
Common causes
Common causes include Faulty ECM power supply relay, Damaged wiring harness or connectors, Corrosion or loose connections in the power supply circuit.
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 17, 2024
💬 Need more help? Ask Auto Expert for instant answers — it's free!
AutoCodes App

Fix Your Car Smarter

Try the New AutoCodes App!

Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.

AutoCodes App on Google Play

Code P0603 2009 Nissan Rogue Description

The P0603 diagnostic trouble code (DTC) for a 2009 Nissan Rogue specifically refers to a malfunction in the Engine Control Module (ECM) power supply circuit. The ECM, also known as the engine control unit (ECU), is a crucial component of the vehicle's electronic control system. It is responsible for managing various engine functions, such as fuel injection, ignition timing, and emissions control. The ECM relies on a stable power supply to function properly, and any disruption in this supply can lead to significant issues with the vehicle's performance.

OBDII Code P0603 2009 Nissan Rogue - Engine Control Module Power Supply Circuit
P0603 2009 Nissan Rogue Code - Engine Control Module Power Supply Circuit

Common Causes of P0603 2009 Nissan Rogue

  1. Faulty ECM power supply relay.
  2. Damaged wiring harness or connectors.
  3. Corrosion or loose connections in the power supply circuit.
  4. ECM internal failure.
  5. Issues with the vehicle's battery or charging system.

Symptoms of P0603 2009 Nissan Rogue

  1. Engine misfires or hesitation during acceleration.
  2. Check Engine Light illuminated on the dashboard.
  3. Rough idling or stalling while driving.
  4. Reduced fuel efficiency.
  5. Difficulty starting the engine.

How to Fix P0603 2009 Nissan Rogue

  1. Begin by conducting a thorough inspection of the ECM power supply circuit, including the relay, wiring, and connectors.
  2. Test the ECM power supply relay to determine if it is functioning correctly. Replace if necessary.
  3. Check for any signs of corrosion or damage in the wiring harness and connectors. Repair or replace as needed.
  4. If the ECM is found to be faulty, it may need to be reprogrammed or replaced with a new unit.
  5. After completing the repairs, clear the DTC and test drive the vehicle to ensure that the issue has been resolved.

Cost to Fix P0603 2009 Nissan Rogue

The typical repair costs for addressing a P0603 DTC in a 2009 Nissan Rogue can range from $200 to $600, depending on the specific cause of the issue and the required repairs. This estimate includes the cost of parts such as a new ECM power supply relay or ECM, as well as labor charges for diagnosis and repair. It is important to note that the actual cost may vary based on factors such as the location of the repair shop, the vehicle's make and model, and the extent of the damage. Additionally, diagnostic time and labor rates at auto repair shops can vary, with hourly rates typically ranging from $80 to $150. It is recommended to obtain a detailed quote from a trusted mechanic to determine the precise cost of addressing this issue.

What does this mean?

Tech Notes for P0603 2009 Nissan Rogue

Start by charging the vehicles battery and clean terminal, once the battery is charged and the terminals are clean and secure, erase code. If the code comes back ON you may have to reprogram or replaced ECM

When is the Code Detected?

Indicates the ECM has experienced an internal memory fault.

Need more information about the P0603 2009 Nissan Rogue code?

Need more information on how to fix the P0603 2009 Nissan Rogue code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P0603 2009 Nissan Rogue 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 P0603 2009 Nissan Rogue Code

1. What does the OBDII code P0603 mean for a 2009 Nissan Rogue?

The P0603 code indicates an issue with the Engine Control Module (ECM) memory power supply, typically caused by a disruption in the power or ground circuits.

2. What are the common symptoms of P0603 in a 2009 Nissan Rogue?

Symptoms may include an illuminated check engine light, engine stalling, poor fuel efficiency, or difficulty starting the vehicle.

3. What causes the P0603 code in a 2009 Nissan Rogue?

Common causes include a weak or disconnected battery, faulty ECM, corroded or damaged wiring, or a failing alternator.

4. Can a low battery trigger the P0603 code?

Yes, a low or disconnected battery can interrupt the ECM memory power supply and cause this code to appear.

5. How do I fix the P0603 code on my 2009 Nissan Rogue?

Start by checking the battery voltage, inspecting the power and ground connections to the ECM, and ensuring the alternator and charging system are functioning properly.

6. Can I drive with the P0603 code on my 2009 Nissan Rogue?

While the vehicle may still run, driving with this code can lead to further electrical issues or potential stalling, so it’s best to diagnose and repair it promptly.

7. Does the P0603 code mean the ECM is faulty?

Not necessarily. While a failing ECM can cause this code, it’s often due to power supply issues like a bad battery, wiring problems, or a poor ground connection.

8. How much does it cost to repair the P0603 code on a 2009 Nissan Rogue?

Repair costs vary depending on the cause. Battery replacement costs around $100-$200, while ECM replacement can cost $500-$1,500.

9. Do I need to reset the ECM after fixing the P0603 code?

Yes, after repairs, you should clear the code with an OBDII scanner and perform a drive cycle to ensure the issue is resolved.

10. Can bad wiring cause the P0603 code in a 2009 Nissan Rogue?

Yes, corroded or damaged wiring to the ECM can disrupt the power supply and trigger this code. Inspect all connections thoroughly.

Discuss the causes and fixes for P0603 2009 Nissan Rogue OBDII Code

Submit a New Comment

Code P0603 2009 Nissan Rogue comments

No comments found for this page.