P0603 2009 Nissan Rogue Code - Engine Control Module Power Supply Circuit
Quick Answer
Battery voltage is supplied to the Engine Control Module (ECM) even when the ignition switch is turned OFF for the ECM memory function of the DTC memory, the air-fuel ratio feedback compensation value memory, the idle air volume learning value memory, etc. Common causes include Loose or poor battery terminal connection, Low battery charge, Faulty Engine Control Module (ECM). 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 Loose or poor battery terminal connection, Low battery charge, Faulty Engine Control Module (ECM).
- 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.
Code P0603 2009 Nissan Rogue Description
What are the Possible Causes of the DTC P0603 2009 Nissan Rogue?
- Loose or poor battery terminal connection
- Low battery charge
- Faulty Engine Control Module (ECM)
- ECM power supply circuit is open or shorted
- ECM Outdated Program
How to Fix the DTC P0603 2009 Nissan Rogue?
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.
Code Tech Notes
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P0603 2009 Nissan Rogue 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.
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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.
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