P0603Lack of proper voltage to the Keep Alive Memory connection on the PCM, Defective PCM Keep Alive Memory Module (KAM), Defective PCM ground circuit(s), Defective PCM controlled output devices
Error en la memoria de acceso de llave (Keep Alive Memory) de la ECU.
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Can I keep driving? With caution
You can drive to the shop, but do not postpone the repair. The problem may worsen and damage other components.
Sistema Afectado
Motor · Powertrain
La falla pertenece al grupo motopropulsor (motor y gestión electrónica).
Espacio para vendedores de repuestos
Aún no hay un anunciante en este espacio.
Symptoms You Will Notice
What you may observe when this code appears
- Reajuste de configuraciones del motor
- Comportamiento inestable
Possible Causes
The components or conditions that trigger this code
- 1ECU defectuosa
- 2Desconexión de batería
How to Fix It — Step by Step
Recommended diagnostic and repair procedure
- 1Conectar batería cargada.
- 2Reemplazar ECU si persiste.
Note: This information is for general reference. For precise diagnostics and safety repairs, always consult a certified mechanic.
Estimated Cost
Approximate range in USD (varies by region and shop)
Varies by diagnosis
* Diagnosis only: $50–$150
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