Bosch Factory Service ManualFault Code: E29

Bosch Washer Error Code E29: Water Influx Pressure Unrecognized / Flow Low

The machine detected an unexpected drop in fill pressure or flow rate during mid-cycle wash or rinse fill operations.

Target Appliance

washer

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: Inspect water supply shutoff valves behind washer and check supply hose strain relief.

Bench Test: Ensure cold water shutoff is fully opened and supply hose is not pinched against wall.

Expected Standard: Supply valve fully open; 20–100 PSI dynamic flow.

If Failed / Out of Spec:

Open valve fully or replace damaged supply hose.

If Passed:

Proceed to Step 2.

Step 2: Physical & Electrical InspectionMultimeter & Visual

Action: Inspect mesh filter screens in the water inlet valve connection fittings.

Bench Test: Check screen mesh for silt, iron oxide particles, or hard water scale.

Expected Standard: Clean screen mesh with zero sediment occlusion.

If Failed / Out of Spec:

Extract and clean filter screens (00424981).

If Passed:

Proceed to Step 3.

Step 3: Physical & Electrical InspectionMultimeter & Visual

Action: Measure resistance across cold and rinse water valve solenoids.

Bench Test: Unplug solenoid terminals and test resistance using digital multimeter.

Expected Standard: 3.8k to 4.5k ohms across each solenoid coil.

If Failed / Out of Spec:

Replace water inlet triple valve assembly (00622324).

If Passed:

Proceed to Step 4.

Step 4: Physical & Electrical InspectionMultimeter & Visual

Action: Inspect electronic pressure sensor air bell on tub bottom.

Bench Test: Inspect plastic air dome for soapy sludge or detergent buildup dampening pressure pulses.

Expected Standard: Clean, clear air bell with unrestricted air passage.

If Failed / Out of Spec:

Flush air bell and replace pressure sensor hose (00605923).

If Passed:

Replace electronic pressure switch (00627460).

Verified OEM Replacement Parts

Cross-referenced factory part numbers for Bosch washer error code E29. Always replace defective components with authentic OEM parts to maintain UL safety certification.

Component Name	OEM Part Number	Manufacturer	Status
Water Inlet Solenoid Valve Assembly	`00622324`	Bosch	Direct Fit OEM
Electronic Water Level Pressure Switch	`00627460`	Bosch	Direct Fit OEM
Pressure Switch Air Tube Hose	`00605923`	Bosch	Direct Fit OEM

Need Local Diagnostic Assistance?

Connect with a Certified Bosch Technician in Your Area

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 E29

What causes Bosch washer error code E29?

The machine detected an unexpected drop in fill pressure or flow rate during mid-cycle wash or rinse fill operations.

Can I reset the E29 code by unplugging the washer?

While disconnecting power for 5 minutes may temporarily clear the display control memory, the E29 code will reoccur once the microcontroller detects the mechanical or electrical fault again.

What OEM replacement parts are required for Bosch E29?

Common OEM replacement components include: Water Inlet Solenoid Valve Assembly (OEM #00622324), Electronic Water Level Pressure Switch (OEM #00627460), Pressure Switch Air Tube Hose (OEM #00605923).