mypros+
Error code reference

Cove Dishwasher Error Code 900132

MCM

Cove codesCove dishwasher codes

MCM: Motor control firmware not compatible.

First step from the service manual

Replace the MCM assembly.

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 900132.

  • 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 900132 means on a Cove dishwasher

Error code 900132 on a Cove dishwasher indicates a firmware incompatibility within the Motor Control Module (MCM). The MCM is the dedicated electronic control assembly responsible for regulating the wash motor, drain motor, and associated pump operations. When the dishwasher's main control system attempts to communicate with the MCM, it checks for a compatible firmware version. If the MCM firmware does not match the expected version or protocol, the system flags this error and halts normal operation to prevent potential damage from miscommunicated motor commands.

This type of error typically arises when an MCM assembly has been replaced with a unit carrying a different firmware revision, or when the existing MCM has experienced internal firmware corruption. Unlike sensor faults or wiring issues, firmware incompatibility is not resolved through resetting or recalibrating the appliance. The control board and the MCM must be running mutually compatible software versions to coordinate motor speed, direction, and timing correctly.

Because this fault points directly to a firmware-level mismatch rather than a mechanical or electrical failure, the prescribed diagnostic path is straightforward: the MCM assembly itself must be replaced. Attempting to run the dishwasher while this error is active is not recommended, as the motor control system cannot operate reliably without verified firmware compatibility between modules.

Source: manufacturer service documentation.

Common causes of 900132

  1. 01

    Incompatible replacement MCM installed

    Part replacement

    If the MCM was recently replaced, the new unit may carry a different firmware version than what the dishwasher's main control system expects. This is the most common trigger for error 900132.

  2. 02

    MCM firmware corruption

    Part replacement

    The existing MCM's internal firmware may have become corrupted due to a power surge, voltage fluctuation, or internal component failure. Corrupted firmware cannot be reflashed in the field, making replacement necessary.

  3. 03

    MCM assembly failure

    Part replacement

    Internal failure of the MCM board can cause it to report an incorrect or unrecognized firmware version to the main control system, triggering this compatibility error even if no replacement was performed.

  4. 04

    Incomplete or failed prior MCM replacement

    Part replacement

    If a previous repair involved the MCM and the replacement process was not completed correctly, the module may be seated improperly or partially initialized, causing a firmware mismatch to be reported.

See the test procedure for each cause

Frequently asked questions about 900132

What does 900132 mean on a Cove dishwasher?
Error code 900132 means the Motor Control Module (MCM) is running firmware that is not compatible with the dishwasher's main control system. The MCM handles all motor and pump operations, and when the firmware versions do not match, the dishwasher cannot run safely. This error requires replacement of the MCM assembly to resolve.
Can I fix error code 900132 myself on a Cove dishwasher?
Resolving this error requires replacing the MCM assembly, which involves working with the internal electronics of the dishwasher. A knowledgeable DIYer comfortable with appliance repair may be able to perform the replacement, but the job requires proper handling of electronic components and disconnecting power before beginning any work. If you are uncertain, a qualified appliance technician is the safer choice.
Will resetting my Cove dishwasher clear error code 900132?
No, a reset will not clear error 900132. Because the fault is caused by a firmware incompatibility at the hardware level, power cycling or resetting the dishwasher does not change the firmware version on the MCM. The error will return immediately after any reset until the MCM assembly is replaced with a compatible unit.
Is it safe to use my Cove dishwasher while error 900132 is active?
It is not recommended to operate the dishwasher while this error is active. The motor control system cannot reliably manage wash and drain motor functions without firmware compatibility between the MCM and the main control board. Running the unit in this state could result in improper motor operation or further component damage.
How much does it cost to fix error code 900132 on a Cove dishwasher?
The cost to fix this error depends on the price of the replacement MCM assembly and whether you hire a technician. Parts costs for electronic control modules on premium dishwasher brands can range from around $150 to $400 or more depending on availability. Adding professional labor typically brings the total repair cost to somewhere in the range of $250 to $600.

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