P0603 2011 Ford Fusion Code - ECM Keep Alive Memory Test Error
Quick Answer
Indicates the Powertrain Control Module (PCM) has experienced an internal memory concern. Common causes include Loose or poor battery terminal connection, Low battery charge, ECM power supply 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
- P0603 2011 Ford Fusion indicates ECM Keep Alive Memory Test Error.
- Common causes
- Common causes include Loose or poor battery terminal connection, Low battery charge, ECM power supply 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.
Code P0603 2011 Ford Fusion Description
What are the Possible Causes of the DTC P0603 2011 Ford Fusion?
- Loose or poor battery terminal connection
- Low battery charge
- ECM power supply circuit is open or shorted
- ECM Programing
- Faulty ECM
How to Fix the DTC P0603 2011 Ford Fusion?
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 2011 Ford Fusion 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 2011 Ford Fusion Code
1. What does the OBDII code P0603 mean for a 2011 Ford Fusion?
The code P0603 indicates an ECM Keep Alive Memory Test Error on the 2011 Ford Fusion.
2. What are the common symptoms of P0603 in a 2011 Ford Fusion?
Common symptoms of P0603 include engine stalling, rough idling, poor acceleration, and the illumination of the check engine light.
3. What causes the ECM Keep Alive Memory Test Error (P0603) in a 2011 Ford Fusion?
Potential causes of P0603 in a 2011 Ford Fusion include a faulty ECM (Engine Control Module), a weak vehicle battery, electrical issues, or a poor connection in the ECM circuit.
4. How can I diagnose the ECM Keep Alive Memory Test Error (P0603) in my 2011 Ford Fusion?
Diagnosing P0603 involves using an OBDII scanner to retrieve the code, checking the vehicle's battery voltage, inspecting for any loose or corroded connections, and testing the ECM for proper functioning.
5. Is it safe to continue driving a 2011 Ford Fusion with the P0603 code?
It is not recommended to drive a vehicle with the P0603 code, as it can lead to further damage to the engine and other components. It is best to address the issue promptly.
6. Can I reset the P0603 code in my 2011 Ford Fusion by disconnecting the battery?
While disconnecting the battery may temporarily clear the code, it is not a recommended method of repair. The underlying issue causing the P0603 code needs to be properly diagnosed and fixed.
7. How much does it typically cost to repair the ECM Keep Alive Memory Test Error (P0603) in a 2011 Ford Fusion?
The cost of repairing P0603 can vary depending on the exact cause of the issue. It may range from a simple fix like tightening a loose connection to replacing the ECM, which can be more expensive.
8. Are there any DIY repair tips for addressing the P0603 code in a 2011 Ford Fusion?
DIY repair tips may include checking and cleaning electrical connections, ensuring the vehicle battery is in good condition, and performing a visual inspection of the ECM for any signs of damage.
9. Will replacing the ECM solve the P0603 code issue in my 2011 Ford Fusion?
Replacing the ECM may solve the P0603 code problem if the issue lies with the module itself. However, it is important to properly diagnose the root cause before proceeding with any repairs.
10. How can I prevent the ECM Keep Alive Memory Test Error (P0603) from reoccurring in my 2011 Ford Fusion?
To prevent the recurrence of P0603, ensure your vehicle's electrical system is in good condition, regularly maintain the battery, and address any issues promptly to avoid potential ECM malfunctions.
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