E8 Moderate Easy DIY

Bosch Refrigerator E8 — Water Filter Reminder / Water Supply Issue

Bosch Refrigerator · Error code E8

What E8 Means

On many Bosch models E8 is a service reminder that the water filter is past its useful life, or indicates the unit is not detecting water flow during a dispenser/ice fill. Filtration quality and ice production are affected.

Symptoms

  • E8 on display
  • Water dispensing slow or stopped
  • Ice maker not filling
  • Filter status light red

Common Causes

1
Water filter past life or clogged

Bosch tracks runtime/throughput and triggers E8 at the interval.

2
Water supply valve closed

Household shutoff to the fridge is off.

3
Kinked water line

Supply tube pinched behind the unit.

4
Failed inlet valve

Solenoid valve does not open on command.

How to Fix It

  1. Replace the water filter with the correct Bosch cartridge.
  2. Reset the filter indicator from the menu per the owner's manual.
  3. Confirm the household water shutoff is fully open.
  4. Inspect the line behind the unit for kinks.
  5. If water still does not flow, test the inlet valve solenoid for resistance and 120VAC at the terminals during a dispense.

Parts You May Need

If diagnosis points to a failed part, these are the common replacements. As an Amazon Associate we earn from qualifying purchases.

Common replacement Bosch UltraClarity Pro water filter View on Amazon→ Common replacement Bosch refrigerator water inlet valve View on Amazon→

More Bosch Refrigerator Codes

E1 E1 — Refrigerator Compartment Sensor Fault E10 E10 — Inverter Compressor / Compressor Drive Fault E11 E11 — Condenser Fan Motor Fault E12 E12 — Damper Control Fault E13 E13 — Ice Maker Fault E14 E14 — Filter Reset Reminder

All Bosch codes → All refrigerator codes →

Verified against manufacturer documentation: bosch-home.com

Always unplug an appliance before servicing it. This guide is for informational purposes and is not a substitute for a qualified technician.