Dishwasher service code f4e1 is on the display. Dishwasher will not turn on. The unit is a kenmore elite model 66513963k017

Resetting your dishwasher would be the first step and go from there,

Kenmore elite dishwasher - Fixya

If this doesn't solve the problem,or it persists,please review these links,

service code F4E1 66513963K017 Kenmore Elite ... | SearsPartsDirect

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The F4E1 is a code that signifies a wash motor issue. Specifically, no communication. This is usually caused by a loose connection in wash motor circuit, motor communication circuit and/or an open wash motor.

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Kenmore Elite Dishwasher service code F4E1 | ShopYourWay

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1. Unplug dishwasher or disconnect power. 2. Check all connections in Wash/Rinse Circuit and Motor Communications Circuit with meter. Fix/replace an open connection/part. Motor fuse on control open. 1. Start Service Diagnostics Cycle using keypad and advance through the error code intervals to interval 19. ( shown on image below ) 2. Listen for 2 relay contact clicks at the start of interval 19 (to confirm both the pilot and motor relays are turning on.

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Faulty wash motor. 1. Unplug dishwasher or disconnect power. 2. Use inspection mirror to inspect for water leakage and/or overheating on the wash motor. If evidence of overheating exists, replace wash motor. If evidence of moisture exists, check seals and hoses

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I only quoted the main parts in both links but review the whole thing in both. They have links to a service technician in case you cannot solve this on your own.