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P0603 2011 Nissan Rogue Code - Engine Control Module Power Supply Circuit

Quick Answer

The P0603 diagnostic trouble code (DTC) for a 2011 Nissan Rogue indicates a malfunction in the Engine Control Module (ECM) power supply circuit. Common causes include Faulty ECM power supply relay, Loose or corroded wiring connections in the power supply circuit, Defective ECM power supply fuse. 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 2011 Nissan Rogue indicates Engine Control Module Power Supply Circuit.
Common causes
Common causes include Faulty ECM power supply relay, Loose or corroded wiring connections in the power supply circuit, Defective ECM power supply fuse.
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 11, 2024
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Code P0603 2011 Nissan Rogue Description

The P0603 diagnostic trouble code (DTC) for a 2011 Nissan Rogue indicates a malfunction in the Engine Control Module (ECM) power supply circuit. The ECM, also known as the engine control unit (ECU), is a critical component of the vehicle's electronic control system. It is responsible for monitoring and controlling various engine functions, such as fuel injection, ignition timing, and emissions control.

OBDII Code P0603 2011 Nissan Rogue - Engine Control Module Power Supply Circuit
P0603 2011 Nissan Rogue Code - Engine Control Module Power Supply Circuit

Common Causes of P0603 2011 Nissan Rogue

  1. Faulty ECM power supply relay
  2. Loose or corroded wiring connections in the power supply circuit
  3. Defective ECM power supply fuse
  4. ECM internal failure
  5. Battery voltage issues affecting the ECM power supply

Symptoms of P0603 2011 Nissan Rogue

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

How to Fix P0603 2011 Nissan Rogue

  1. Perform a thorough inspection of the ECM power supply circuit, including checking the power supply relay, wiring connections, and fuse for any signs of damage or corrosion.
  2. Test the ECM power supply relay using a multimeter to determine if it is functioning correctly. Replace the relay if necessary.
  3. Inspect the ECM power supply fuse and replace it if it is blown or damaged.
  4. Check the battery voltage to ensure it is within the proper range, as low or fluctuating voltage can affect the ECM power supply.
  5. Clear the DTC using a scan tool after completing the repair to reset the ECM and monitor for any recurring issues.

Cost to Fix P0603 2011 Nissan Rogue

The typical repair costs for addressing a P0603 DTC in a 2011 Nissan Rogue can vary depending on the specific cause of the issue. In general, replacing a faulty ECM power supply relay or fuse may cost between $50 to $150, including parts and labor. If the problem is more complex, such as an internal ECM failure, the repair costs can increase significantly, potentially ranging from $500 to $1000 or more.

What does this mean?

Tech Notes for P0603 2011 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.

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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 P0603 2011 Nissan Rogue Code

1. What does OBDII code P0603 for a 2011 Nissan Rogue mean?

The code P0603 indicates a malfunction in the Engine Control Module (ECM) power supply circuit.

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

Common symptoms include engine stalling, rough idling, poor acceleration, and the illumination of the Check Engine Light.

3. What are the possible causes of a P0603 code in a 2011 Nissan Rogue?

Potential causes may include a faulty ECM relay, damaged wiring or connectors in the power supply circuit, or a defective ECM itself.

4. How can I diagnose a P0603 error in my Nissan Rogue?

Diagnosing a P0603 code typically involves checking the ECM power supply circuit for any visible damage, testing the ECM relay, and conducting a thorough inspection of related wiring and connectors.

5. Can I drive my Nissan Rogue with a P0603 error code?

It is not recommended to drive your vehicle with a P0603 error code, as it can lead to further damage and potential safety hazards. It's advisable to address the issue promptly.

6. How can I repair a P0603 code in my 2011 Nissan Rogue?

Depending on the underlying cause, repairs may involve replacing the ECM relay, repairing damaged wiring or connectors, or replacing the ECM itself. It is recommended to consult a qualified mechanic for proper diagnosis and repair.

7. Will resetting the trouble codes make the P0603 code disappear?

Resetting the trouble codes may clear the Check Engine Light temporarily, but the underlying issue causing the P0603 code will persist unless properly diagnosed and repaired.

8. Is it safe to ignore a P0603 code in my Nissan Rogue?

Ignoring a P0603 code can lead to potential drivability issues, reduced fuel efficiency, and further damage to the engine control system. It is advisable to address the problem promptly.

9. Can a P0603 code be triggered by a dead battery in a Nissan Rogue?

A dead or weak battery can sometimes trigger a P0603 code due to voltage fluctuations affecting the ECM power supply circuit. It's recommended to ensure the battery is in good condition when diagnosing this code.

10. How much does it cost to repair a P0603 error in a 2011 Nissan Rogue?

The cost of repairing a P0603 error can vary depending on the exact cause of the issue, parts needed for replacement, and labor costs. It's best to get a diagnostic from a qualified mechanic for an accurate estimate.

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