P0603 Ford Code - ECM Keep Alive Memory Test Error
Quick Answer
Battery voltage is supplied to the 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, 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 Ford 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 Ford Description
What are the Possible Causes of the DTC P0603 Ford?
- 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 Ford?
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 Ford 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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Information for Specific Ford Models
- P0603 1997 Ford F150 — Powertrain Control Module KAM Test Error
- P0603 1998 Ford F150 — Powertrain Control Module KAM Test Error
- P0603 1999 Ford F150 — Powertrain Control Module KAM Test Error
- P0603 2000 Ford F150 — Powertrain Control Module KAM Test Error
- P0603 2001 Ford F150 — Powertrain Control Module KAM Test Error
- P0603 2002 Ford F150 — Powertrain Control Module KAM Test Error
- P0603 2003 Ford F150 — Powertrain Control Module KAM Test Error
- P0603 2006 Ford Fusion — ECM Keep Alive Memory Test Error
- P0603 2007 Ford Fusion — ECM Keep Alive Memory Test Error
- P0603 2008 Ford Fusion — ECM Keep Alive Memory Test Error
- P0603 2009 Ford Fusion — ECM Keep Alive Memory Test Error
- P0603 2010 Ford Fusion — ECM Keep Alive Memory Test Error
- P0603 2011 Ford Fusion — ECM Keep Alive Memory Test Error
- P0603 2012 Ford Fusion — ECM Keep Alive Memory Test Error
Frequently Asked Questions about P0603 Ford Code
No Frequently Asked Questions about P0603 Ford Code found.
Discuss the causes and fixes for P0603 Ford OBDII Code
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would this have anything to do with shifting i rev and rev and sometimes it goes and sometimes it doesnt and its the same for reverse
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