mypros+
Error code reference

Bosch Refrigerator Error Code 3-3-7

Ice maker

Bosch codesBosch refrigerator codes

Ice maker: Water valve of water dispenser faulty.

First step from the service manual

Check water fill valve of dispenser; if problematic replace; if OK replace icemaker.

The complete diagnostic procedure includes additional test steps, resistance specifications, wiring diagram references, and component test points.

MyPros+ Max

Get the full diagnostic procedure for 3-3-7.

  • Step-by-step tests with expected resistance, voltage, and continuity values
  • Wiring diagram references and connector pinouts from the OEM service manual
  • Verified part numbers when replacement is required
Get the full procedure

$29/month · Cancel anytime · Or $9.95 3-day pass

What 3-3-7 means on a Bosch refrigerator

Error code 3-3-7 on a Bosch refrigerator indicates a fault detected in the water fill valve associated with the water dispenser and ice maker system. This valve controls the flow of water from the household supply line into the ice maker for ice production. When the refrigerator's control board detects an abnormal electrical signal, incorrect resistance, or a failure in the valve's solenoid circuit, it triggers this code to alert the technician that the dispenser water valve is not operating within expected parameters.

The water fill valve is a solenoid-operated component that opens and closes in response to voltage signals from the control board. A faulty valve can present as an open or shorted solenoid coil, physical damage to the valve body, or a wiring harness issue between the control board and the valve. In some cases, mineral scale buildup from hard water can restrict the valve's flow or damage its internal components, causing erratic behavior that the control system interprets as a fault.

The diagnostic process is straightforward: begin by inspecting and testing the water fill valve for the dispenser. If the valve tests out of specification or shows visible damage, replacing it is the correct repair. If the valve checks out as functional, the fault likely lies within the ice maker assembly itself, which should then be replaced as a unit. Checking wiring continuity between the valve and control board is also an important intermediate step.

Source: manufacturer service documentation.

Common causes of 3-3-7

  1. 01

    Faulty water fill valve solenoid

    Part replacement

    The solenoid coil inside the water fill valve can fail electrically, presenting as an open circuit or a short. This is the most common cause of a 3-3-7 code and requires replacing the dispenser water valve.

  2. 02

    Wiring harness fault between valve and control board

    Wiring / connection

    Damaged, corroded, or disconnected wiring between the water fill valve and the control board can cause the board to read a false fault. Inspect the connector and wire runs for visible damage or corrosion before replacing any parts.

  3. 03

    Mineral scale or debris clogging the valve

    Part replacement

    Hard water deposits can accumulate inside the valve body, restricting flow or interfering with the solenoid mechanism. A visually clogged or stuck valve should be replaced rather than cleaned.

  4. 04

    Failed ice maker assembly

    Part replacement

    If the dispenser water valve tests as functional, the fault may originate within the ice maker unit itself. In this scenario, replacing the ice maker assembly is the recommended next step.

  5. 05

    Low household water pressure

    Wiring / connection

    Insufficient incoming water pressure can prevent the valve from operating correctly, which may trigger a fault. Verify that the household supply pressure meets the refrigerator's minimum requirements before condemning the valve.

See the test procedure for each cause

Frequently asked questions about 3-3-7

What does 3-3-7 mean on a Bosch refrigerator?
Error code 3-3-7 on a Bosch refrigerator indicates that the water fill valve serving the water dispenser and ice maker has been detected as faulty. The control board monitors the valve's solenoid circuit and triggers this code when the valve does not respond or operate within expected parameters. The result is typically a disruption in ice production or water dispensing. Diagnosis starts with testing the water fill valve and replacing it if faulty, or replacing the ice maker if the valve checks out.
Can I fix a 3-3-7 error on my Bosch refrigerator myself?
A knowledgeable DIYer can address this error by locating the dispenser water valve, typically found at the back lower section of the refrigerator, and inspecting it for visible damage or testing it with a multimeter for solenoid continuity. If the valve is confirmed bad, replacing it involves disconnecting the water supply line and electrical connector and installing the new part. If you are not comfortable working with water supply connections or electrical components, a qualified appliance technician should handle the repair.
Is it safe to keep using my refrigerator when error code 3-3-7 is showing?
A 3-3-7 error does not typically create an immediate safety hazard, and the refrigerator's cooling functions will generally continue to operate. However, the ice maker may stop producing ice or the dispenser may not function properly. It is best to address the fault promptly, as a valve stuck in the open position could potentially cause a water leak.
How much does it cost to fix a Bosch refrigerator 3-3-7 error?
If the repair requires only a new water fill valve, parts costs typically range from roughly $30 to $80 depending on the specific model. If the ice maker assembly itself needs replacement, parts can range from $80 to $200 or more. Adding professional labor, the total repair cost can range from $150 to $350 or higher depending on your location and service provider.
Will resetting my Bosch refrigerator clear the 3-3-7 error code?
A reset may temporarily clear the 3-3-7 error code, but the code will return if the underlying fault with the water fill valve or ice maker has not been repaired. Resetting the unit is not a fix and should only be used as a step in diagnosing whether a fault is persistent. The actual component causing the fault must be identified and replaced for the error to be resolved permanently.

Related Bosch refrigerator codes

All Bosch refrigerator codes
View all 209 Bosch refrigerator codes

78,000+ service manuals · 160,000+ error codes · 55+ brands

Get Started

$29/month · Cancel anytime · Or $9.95 3-day pass