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Error code reference

Jenn-Air Dishwasher Error Code E:02

Pump control or pump switch-over defective; internal fault on power module.

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What the E:02 error code actually means

Your Jenn-Air dishwasher has detected a problem with the electronic board that controls how the wash and drain pumps operate. This is an internal failure inside the control board, not something caused by a clog or a simple reset. The dishwasher needs a part replaced before it will work normally again.

Diagnostic procedure

The full E:02 procedure

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1
First diagnostic step
Replace the power module.
More steps, wiring diagram references, and verified part numbers
Includes expected resistance and voltage values, connector pinouts, and supersession notes for replacement parts.
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Most common causes of E:02

Ranked by how often they cause this code
  1. 1Failed internal relay or triac on the power module
  2. 2Corrupted control logic on the power module
  3. 3Loose or corroded wiring connections at the power module
  4. 4Pump motor winding failure creating a feedback fault

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Questions people ask about E:02

What does E:02 mean on a Jenn-Air dishwasher?
E:02 indicates that the pump control circuit or the pump switch-over mechanism has a defect, and the fault is located internally within the power module. The power module manages when the wash and drain pumps activate, and when this switching logic fails, the dishwasher stops the cycle and displays E:02. This is a hardware-level fault rather than a recoverable software error.
Is it safe to keep using my dishwasher when E:02 is displayed?
Continuing to run the dishwasher with an active E:02 fault is not recommended. The error means the pump control circuitry is not functioning correctly, and repeated attempts to run a cycle could place additional stress on the pump motor. It is best to leave the unit off until the fault is diagnosed and the power module is replaced.
How much does it cost to fix E:02 on a Jenn-Air dishwasher?
Repair costs depend on whether you hire a technician or replace the part yourself. The power module part alone generally falls in the range of $100 to $250 depending on the specific model. With professional labor included, total repair costs typically range from $200 to $400. Getting a quote before proceeding is advisable, as the repair cost should be weighed against the age and overall condition of the appliance.
Can I fix E:02 on my Jenn-Air dishwasher myself?
A technician or confident DIYer can address this error by first checking all wiring connections between the power module and the pump assembly for corrosion or looseness. If connections are secure and the error persists, the power module itself needs to be replaced. This involves working with line voltage components, so the dishwasher should be fully disconnected from power before any work begins.
Will resetting the dishwasher clear the E:02 error code?
A reset is unlikely to resolve E:02 because the fault is an internal hardware problem within the power module, not a temporary communication glitch. The error code will typically return immediately or after the next attempted cycle. Replacing the power module is the correct corrective step rather than repeated resets.

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