mypros+
Error code reference

Cove Dishwasher Error Code 900131

MCM

Cove codesCove dishwasher codes

MCM: Develop block/config image not present or valid.

First step from the service manual

Replace the UIM.

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 900131.

  • 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 900131 means on a Cove dishwasher

Error code 900131 on a Cove dishwasher indicates a failure within the Machine Control Module (MCM) related to a missing or corrupted develop block or configuration image. The MCM is the primary control board that manages all operational sequences and communicates with the User Interface Module (UIM). The develop block and configuration image are firmware-level data structures stored within the control system that define how the machine is configured and how it should operate. When the MCM cannot locate or validate this data, it halts normal operation and throws this error.

The most common root cause of this fault is a corrupted or incomplete firmware image residing in the UIM, which is responsible for housing or relaying configuration data the MCM depends on. A failed software update, a brief power interruption during a programming cycle, or internal component degradation within the UIM can all result in the configuration image becoming unreadable or absent. Because the MCM cannot independently resolve a missing or invalid configuration image, the system enters a fault state and displays code 900131.

The recommended first diagnostic step is replacement of the UIM. This is because the UIM typically contains or communicates the develop block data that the MCM requires during initialization. Replacing the UIM with a properly programmed unit restores the valid configuration image, allowing the MCM to complete its startup sequence and return the dishwasher to normal function. If the error persists after UIM replacement, the MCM itself may require evaluation or replacement.

Source: manufacturer service documentation.

Common causes of 900131

  1. 01

    Corrupted UIM firmware or configuration image

    Part replacement

    The User Interface Module may contain a corrupted or incomplete configuration image, often caused by a failed software update or a power interruption during programming. This prevents the MCM from reading valid startup data.

  2. 02

    Failed or defective UIM hardware

    Part replacement

    Internal component failure within the UIM can render it unable to store or transmit the required configuration data to the MCM. This is the most directly addressed cause by the recommended diagnostic step of UIM replacement.

  3. 03

    Power surge or interruption during operation

    Part replacement

    A sudden loss of power or a voltage surge while the dishwasher was in use can corrupt the develop block data stored in the UIM. Inspecting for signs of electrical damage on the UIM board can help confirm this cause.

  4. 04

    Faulty MCM unable to validate configuration data

    Part replacement

    If UIM replacement does not resolve the error, the MCM itself may be failing and unable to properly read or process a valid configuration image. This is a secondary consideration after UIM replacement has been attempted.

  5. 05

    Poor or intermittent connection between UIM and MCM

    Wiring / connection

    A loose, corroded, or damaged wiring harness connection between the UIM and MCM can interrupt communication of configuration data. Inspecting and reseating all connectors between these two components is a worthwhile step before full part replacement.

See the test procedure for each cause

Frequently asked questions about 900131

What does 900131 mean on a Cove dishwasher?
Error code 900131 means the Machine Control Module (MCM) cannot find or validate the develop block or configuration image it needs to operate. This is a firmware-level fault that prevents the dishwasher from running. The configuration data is typically stored in or communicated by the User Interface Module (UIM), and replacing the UIM is the first recommended diagnostic step.
Can I fix error code 900131 myself?
This error requires replacing the User Interface Module (UIM), which involves working with the dishwasher's internal control components. A knowledgeable DIYer comfortable with appliance electronics may be able to perform a UIM replacement, but the repair does require careful handling of control boards and wiring connections. If the error continues after UIM replacement, the Machine Control Module may also need professional evaluation.
Will resetting my Cove dishwasher clear error code 900131?
A simple power reset is unlikely to permanently resolve error code 900131 because the fault is caused by missing or corrupted configuration data, not a temporary communication glitch. The dishwasher may restart briefly but will return to the fault state once the MCM again fails to locate a valid configuration image. Resolving this error requires addressing the underlying hardware issue, starting with UIM replacement.
Is it safe to use my Cove dishwasher when error code 900131 is displayed?
When error code 900131 is active, the dishwasher will not operate normally because the MCM has halted its startup sequence. The appliance is not functional in this state, so there is no immediate safety hazard from attempting to run it. However, you should avoid repeated reset attempts and have the UIM inspected and replaced promptly to prevent any further stress on the control system.
How much does it cost to fix error code 900131 on a Cove dishwasher?
Repair costs will depend on whether the UIM alone resolves the issue or if the MCM also needs replacement. UIM replacement parts and labor for a Cove dishwasher typically range from $150 to $400 depending on parts pricing and local labor rates. If the MCM also requires replacement, total costs can be higher. Getting a diagnostic estimate from an authorized Cove technician before committing to repairs is advisable.

Related Cove dishwasher codes

All Cove dishwasher codes
View all 62 Cove dishwasher codes

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

Get Started

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