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P0603 2012 Nissan Rogue Code - Engine Control Module Power Supply Circuit

Quick Answer

The P0603 code in a 2012 Nissan Rogue indicates a problem with the Engine Control Module (ECM) power supply circuit. Common causes include Faulty ECM power supply relay, Wiring or connection issues in the power supply circuit, Failed 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 2012 Nissan Rogue indicates Engine Control Module Power Supply Circuit.
Common causes
Common causes include Faulty ECM power supply relay, Wiring or connection issues in the power supply circuit, Failed 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 10, 2024
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Code P0603 2012 Nissan Rogue Description

The P0603 code in a 2012 Nissan Rogue indicates a problem with 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 monitoring and controlling various engine functions to ensure optimal performance and efficiency. The power supply circuit provides the necessary voltage and current to the ECM for it to function correctly.

OBDII Code P0603 2012 Nissan Rogue - Engine Control Module Power Supply Circuit
P0603 2012 Nissan Rogue Code - Engine Control Module Power Supply Circuit

Common Causes of P0603 2012 Nissan Rogue

  1. Faulty ECM power supply relay
  2. Wiring or connection issues in the power supply circuit
  3. Failed ECM power supply fuse
  4. Voltage irregularities in the power supply system
  5. ECM internal failure

Symptoms of P0603 2012 Nissan Rogue

  1. Engine misfires or rough idling
  2. Reduced fuel efficiency
  3. Engine stalling or difficulty starting
  4. Illuminated check engine light
  5. Loss of engine performance or responsiveness

How to Fix P0603 2012 Nissan Rogue

  1. Begin by conducting a thorough inspection of the ECM power supply circuit, checking for any visible damage, loose connections, or corrosion.
  2. Test the ECM power supply relay and fuse to ensure they are functioning correctly. Replace any faulty components as needed.
  3. Use a multimeter to measure the voltage output of the power supply circuit and identify any irregularities.
  4. Inspect the wiring harness for signs of wear or damage, repairing or replacing any compromised sections.
  5. Clear the diagnostic trouble codes (DTCs) from the vehicle's memory using a scan tool, then test drive the vehicle to verify that the issue has been resolved.

Cost to Fix P0603 2012 Nissan Rogue

The typical repair costs for addressing a P0603 code in a 2012 Nissan Rogue can range from $200 to $500, depending on the specific cause of the issue and the cost of parts and labor in your area. Keep in mind that diagnosis time and labor rates at auto repair shops can vary, so it's advisable to check with local shops for a more accurate estimate. In general, auto repair shops charge between $80 and $150 per hour for labor, with rates potentially higher at dealerships or metropolitan areas and lower at independent shops.

What does this mean?

Tech Notes for P0603 2012 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 2012 Nissan Rogue Code

1. What does the OBDII code P0603 mean on a 2012 Nissan Rogue?

P0603 indicates an issue with the Engine Control Module (ECM) power supply circuit, often caused by power interruptions or memory errors in the ECM.

2. What are the common symptoms of code P0603 on a 2012 Nissan Rogue?

Symptoms may include a check engine light, erratic engine performance, difficulty starting, or intermittent stalling.

3. What causes the P0603 code on a 2012 Nissan Rogue?

Common causes include a weak or disconnected battery, faulty ECM, damaged wiring, or electrical interference in the ECM power supply circuit.

4. Can a weak battery cause the P0603 code?

Yes, a weak or discharged battery can trigger this code if the ECM experiences power interruptions.

5. How do you diagnose code P0603 on a 2012 Nissan Rogue?

Start by checking the battery condition, inspecting ECM wiring and connectors for damage, and testing for consistent power supply to the ECM.

6. Can driving with the P0603 code damage my 2012 Nissan Rogue?

While it may not cause immediate damage, unresolved ECM power issues could lead to poor engine performance or leave you stranded.

7. How is the P0603 code fixed on a 2012 Nissan Rogue?

Repairs may include replacing the battery, repairing or replacing damaged wiring, or reprogramming or replacing the ECM.

8. Can clearing the P0603 code solve the issue?

Clearing the code may temporarily remove the check engine light, but the underlying issue needs to be fixed to prevent recurrence.

9. How much does it cost to fix code P0603 on a 2012 Nissan Rogue?

Costs vary depending on the root cause. Battery replacement might cost $100-$200, while ECM replacement could exceed $1,000.

10. Is the P0603 code specific to the 2012 Nissan Rogue?

No, the P0603 code is a generic OBDII code that can appear on various vehicles but may have vehicle-specific causes and symptoms.

Discuss the causes and fixes for P0603 2012 Nissan Rogue OBDII Code

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  • My car all of a sudden would not restart plus the check engine light was on so I got a hot shot went straight to an auto store got a free code test po603 came up battery was weak I brought a new battery but the check engine light is still on how do I turn it off.

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  • You can use and OBDII scanner to clear the code, disconnect the car battery for about 30 minutes, or just wait for a few days for the light to clear it self. If there is still a problem, then the light will come back.

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