Bosch Factory Service ManualFault Code: E01

Bosch Dryer Error Code E01: Exhaust Airflow Restriction / Lint Duct Overheat

Internal thermal sensors detect excessive temperature rise across the blower housing caused by an obstructed lint screen or clogged exterior exhaust duct.

Target Appliance

dryer

OEM Certified Technical Diagnostic Tree

Diagnostic Tool Required

Digital Multimeter

Measure Ohms resistance, continuity & line voltage.

Triage Complexity

Advanced Diagnostic

4 Sequential manufacturer inspection branches.

Sequential Factory Diagnostic Tree

Perform each diagnostic step in order. Disconnect electrical power and turn off utility shutoffs before inspecting wiring or internal mechanical assemblies.

Step 1: Physical & Electrical InspectionMultimeter & Visual

Action: Remove lint filter screen from door opening and inspect under strong light.

Bench Test: Wash lint screen with hot water and soap to remove invisible dryer sheet wax film.

Expected Standard: Water flows straight through mesh without pooling or beading.

If Failed / Out of Spec:

Clean lint screen thoroughly or replace filter (00652184).

If Passed:

Proceed to Step 2.

Step 2: Physical & Electrical InspectionMultimeter & Visual

Action: Disconnect exhaust duct from rear of dryer and inspect the rigid or semi-rigid ducting to outside wall cap.

Bench Test: Check entire duct run for crushed elbows, lint nests, or stuck exterior gravity louvers.

Expected Standard: Unobstructed, smooth 4-inch metal duct; outside damper opens fully under blower draft.

If Failed / Out of Spec:

Clean or replace exhaust ducting to restore required CFM airflow.

If Passed:

Proceed to Step 3.

Step 3: Physical & Electrical InspectionMultimeter & Visual

Action: Inspect exhaust NTC temperature sensor mounted on blower wheel housing.

Bench Test: Disconnect NTC sensor leads and measure resistance at room temperature (77°F).

Expected Standard: 10k ohms (10,000 Ω) at 77°F, dropping smoothly when warmed.

If Failed / Out of Spec:

Drifted or open thermistor. Replace blower NTC sensor (00613753).

If Passed:

Proceed to Step 4.

Step 4: Physical & Electrical InspectionMultimeter & Visual

Action: Test continuity across the manual-reset or one-shot thermal safety limit thermostat on heater box.

Bench Test: Measure resistance across thermostat spade terminals.

Expected Standard: 0 ohms (closed circuit).

If Failed / Out of Spec:

Replace high-limit thermal safety thermostat kit (00642879).

If Passed:

Replace main electronic control module (11006842).

Verified OEM Replacement Parts

Cross-referenced factory part numbers for Bosch dryer error code E01. Always replace defective components with authentic OEM parts to maintain UL safety certification.

Component Name	OEM Part Number	Manufacturer	Status
Dryer Fine Lint Filter Screen Assembly	`00652184`	Bosch	Direct Fit OEM
Blower Housing Exhaust NTC Thermistor	`00613753`	Bosch	Direct Fit OEM
Heater High-Limit Safety Thermostat Kit	`00642879`	Bosch	Direct Fit OEM

Need Local Diagnostic Assistance?

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If multimeter testing reveals an internal short, locked motor, or fried control board, let an experienced local technician complete the repair with certified OEM replacement parts.

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Frequently Asked Questions: Bosch E01

What causes Bosch dryer error code E01?

Internal thermal sensors detect excessive temperature rise across the blower housing caused by an obstructed lint screen or clogged exterior exhaust duct.

Can I reset the E01 code by unplugging the dryer?

While disconnecting power for 5 minutes may temporarily clear the display control memory, the E01 code will reoccur once the microcontroller detects the mechanical or electrical fault again.

What OEM replacement parts are required for Bosch E01?

Common OEM replacement components include: Dryer Fine Lint Filter Screen Assembly (OEM #00652184), Blower Housing Exhaust NTC Thermistor (OEM #00613753), Heater High-Limit Safety Thermostat Kit (OEM #00642879).