Bosch E02 Error: Motor Circuit Electrical Short

Quick Answer

Bosch E02 is an electrical short in the motor circuit - do not run the dishwasher again until this is diagnosed. A short can damage the control board and is a shock hazard. Disconnect power at the breaker. The key test: set your multimeter to ohms and check between each motor terminal and the motor housing - any reading other than OL means the motor insulation has failed and the motor needs replacing.

Bosch E02 is an electrical short in the motor circuit - more serious than E01. Do not run the dishwasher again until this is diagnosed. A short circuit can cause control board damage and creates a potential electrical hazard. The motor insulation test is the key diagnostic step: disconnect the motor and test between the motor terminals and the motor housing. Any continuity here means the motor insulation has broken down and the motor must be replaced. Water from a prior E15 event is a common trigger for E02.

BoschDishwasherSeverity: criticalDifficulty: advanced55% DIY Success

Time to Fix

60–360 min

Difficulty

advanced

Parts Cost

$120 – $280

Tools Needed

Multimeter, Non-contact voltage tester

Wrong code?

Not seeing E02 on your display?

Select what your appliance is actually doing and we'll take you to the right guide.

open circuit fault in motor wiring

E01

motor not starting or reaching speed

E20

water in base tray triggering flood protection

E15

general troubleshooting starting point

HUB

What Does the E02 Code Mean?

E02 differs from E01 in severity: E01 is an open circuit or abnormal current draw, while E02 indicates a short circuit condition. A short can mean motor winding insulation has broken down (current is flowing between windings or between a winding and the motor casing), a damaged wiring harness has two conductors touching, or the control board's motor output circuit has failed internally. Each scenario requires a different repair approach.

Most Likely Causes

Based on aggregated repair data, here is the probability breakdown for this error code:

Motor winding insulation breakdown causing winding-to-ground short40%

Water intrusion from E15 event causing short in motor connector area24%

Control board output circuit internal short22%

Damaged wiring harness with two conductors bridged14%

Symptoms You May Notice

E02 displayed, dishwasher immediately shuts down
Circuit breaker may trip when attempting to start dishwasher
E02 appearing after a water leak event (E15 history)

Can you reset a Bosch dishwasher to clear the E02 code?

E02 will not clear while the short exists. After repair, turn on the circuit breaker and hold Start/Reset for 5 seconds.

Tools Required for Diagnosis

MultimeterNon-contact voltage testerTorx T20 screwdriver

Diagnostic Checklist

Follow these steps in order. We start with the easiest external fixes before opening up the machine.

Safety first: do not run the dishwasher

E02 indicates an electrical short. Turn off the circuit breaker. Do not press any buttons or attempt to clear the error without first locating the short. Running the appliance with a short circuit can damage the control board and creates a shock hazard.

Inspect wiring harness for damage

Motor insulation test

Replacement Parts

If your diagnostic testing proves the component has failed, you will need a replacement. We recommend OEM parts over aftermarket for water-handling components.

Part Name	OEM Number	Estimated Price
Wash Motor / Circulation Pump Assembly00654575 · $120–$280	00654575	$120 – $280

Verify part fitment for your Bosch model

Repair vs. Replace Calculator

Appliance Age (Years)7 Yrs

Labor Approach

Our Verdict

BORDERLINE

Estimated Cost: $200 (Parts) vs $650 (New Machine)

Frequently Asked Questions

Is E02 dangerous?

Yes, E02 represents an actual electrical short circuit. Do not use the dishwasher with E02 active. An unresolved short can trip the household circuit breaker repeatedly, cause the control board to overheat and fail, or in a worst-case scenario create a fire risk if the short generates sustained heat in the wiring. The circuit breaker's trip is a safety mechanism protecting against exactly this scenario.

Can water cause E02 on a Bosch?

Yes. This is actually one of the more common E02 triggers. If the dishwasher had a prior E15 (flood protection) event where water accumulated in the base tray, that water can wick into the motor connector area. Once water bridges two conductors in the motor connector, the short circuit triggers E02. Always investigate and dry out the base tray after an E15 event before returning the dishwasher to service.

What is the motor insulation testing procedure?

With the motor connector disconnected and the circuit breaker off, set your multimeter to resistance mode. Touch one probe to each motor terminal in turn and the other probe to the motor's metal housing. You are checking whether the motor winding has any electrical path to the motor case. A healthy motor shows OL (open circuit) on every terminal-to-housing test. Any reading - even a high-resistance reading - indicates insulation breakdown.

E02 after an E15 leak event - what is the repair sequence?

Start by fully drying the base tray. Remove the toe kick panel and use a turkey baster or towels to remove all standing water from the base. Dry the area for 24 hours with a fan if possible. Then inspect the motor connector area for moisture damage. If the connector shows water intrusion, clean it with electrical contact cleaner and let it dry completely before testing. If the motor fails the insulation test, replace it.

Can I repair the wiring instead of replacing the motor?

Yes, if the short is in the wiring harness rather than the motor itself. A chafed wire touching the metal frame can be repaired with heat-shrink tubing after the bare spot is wrapped with electrical tape. Use a multimeter to confirm the short has been eliminated before reconnecting power. If the short is inside the motor windings, there is no practical repair short of motor replacement.

Related Bosch Dishwasher Error Codes

Code: E01Bosch E01 Error: What's Wrong with the Motor Circuit Code: E20Bosch E20: Wash Motor Not Starting Up Code: E15Bosch E15: Fix the Anti-Flood Alert Fast Code: HUBBosch Dishwasher Troubleshooting Guide

Same Fix Works on These Brands

Bosch shares the same hardware platform with these brands. The diagnosis and repair steps are identical.

Bosch dishwasherBosch Dishwasher E15: Fix the Anti-Flood Alert Fast Bosch dishwasherBosch Dishwasher Error Codes: Complete List + Fixes Bosch dishwasherHow to Reset a Bosch Dishwasher (Every Method)Bosch dishwasherBosch E24 Error: Drain Problem Solved Step by Step Bosch dishwasherBosch E25 Code: Drain Pump Fix Without a Technician Bosch dishwasherBosch Dishwasher Not Draining: Every Cause Covered

Models Known to Experience E02 Errors

This repair applies to most Bosch dishwashers with this error code. Common model numbers include:

SHPM88Z75N, SHPM88Z55N, SHPK7ZL55N, SHE3AR75UC, SHEM63W55N, SHPM65Z55N, SHE3AR72UC, SHDF78Z55N, SHEM78ZH5N, SHPM98Z75N

Last verified for technical accuracy on March 14, 2026