mypros+
Error code reference

Maytag Range Error Code 1c4c

Micro communication failure

Maytag codesMaytag range codes

Micro communication failure – serial communications checksum invalid between microprocessors.

First step from the service manual

Disables all outputs; check control board connections and replace control if necessary.

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 1c4c.

  • 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 1c4c means on a Maytag range

The 1c4c error code indicates a power micro communication failure with an invalid CRC (Cyclic Redundancy Check). The main control board attempted to communicate with the power micro processor and received a corrupted or unverifiable data packet. CRC is a standard error-detection method used to confirm data integrity between microprocessors, so an invalid CRC means the control board cannot trust the signals it is receiving from the power micro, which manages power distribution to heating elements and other high-voltage components.

For homeowners, this means the brain of your range detected a communication breakdown between two of its internal computer chips. One chip handles overall control logic, and the other manages the actual power going to your burners and oven. When these two chips cannot communicate reliably, the range triggers this fault to prevent unpredictable behavior, such as elements heating without input or failing to shut off.

This code is most commonly resolved by replacing the main control board, as the failure typically originates there. In some cases, a damaged wiring harness connecting the control board to the power micro module can produce the same fault. Power surges or fluctuations that corrupt the board's firmware can also trigger invalid CRC errors.

Source: manufacturer service documentation.

Common causes of 1c4c

  1. 01

    Failed main control board

    Part replacement

    The main control board contains the primary processor that initiates communication with the power micro. When the board's communication circuitry fails or its firmware becomes corrupted, it generates invalid CRC data, triggering the 1c4c fault.

  2. 02

    Damaged wiring harness between control board and power micro

    Part replacement

    A pinched, burned, or corroded connector between the control board and the power micro module can interrupt data signals mid-transmission, causing the CRC check to fail even if both boards are otherwise functional.

  3. 03

    Power surge or voltage irregularity corrupting firmware

    Part replacement

    A power surge can corrupt the firmware stored on the control board's processor, causing it to send or interpret CRC-invalid data packets during communication with the power micro.

  4. 04

    Faulty power micro module

    Part replacement

    Although less common, the power micro module itself can fail and return invalid CRC responses to the main control board. If replacing the control board does not clear the code, the power micro module should be evaluated next.

See the test procedure for each cause

Frequently asked questions about 1c4c

What does error code 1c4c mean on a Maytag range?
The 1c4c code means the range detected a power micro communication failure with an invalid CRC (Cyclic Redundancy Check). This indicates the main control board and the power micro processor, which manages power delivery to heating elements, cannot communicate reliably. The range logs this fault to prevent unsafe or unpredictable heating behavior.
How do I fix error code 1c4c on a Maytag range?
The first recommended step is replacing the main control board, as this is the most common source of the invalid CRC signal. Before ordering parts, inspect the wiring harness connecting the control board to the power micro module for burns, corrosion, or loose connectors. If a new control board does not resolve the code, the power micro module itself may need replacement. A repair technician can run diagnostics to confirm which component has failed before you order parts.
Is it safe to use my Maytag range while the 1c4c error code is active?
Using the range with an active 1c4c code is not recommended. This fault involves unreliable communication between the control board and the power micro, which manages power to your heating elements. This creates a risk of elements not responding correctly to controls, including potentially failing to turn off. Disconnect the range from power until the fault is diagnosed and repaired.
How much does it cost to fix error code 1c4c on a Maytag range?
A replacement main control board for a Maytag range typically costs between $150 and $350 for the part alone, depending on the model. If you hire a technician, expect an additional $100 to $200 in labor. DIY replacement is feasible for someone comfortable working with appliance electronics, as control board swaps generally involve disconnecting wire harnesses and mounting screws, but always disconnect power before starting any repair.
Will resetting my Maytag range clear the 1c4c error code?
Disconnecting the range from power for 60 seconds and restoring it may temporarily clear the 1c4c code, but the fault will return if the underlying hardware issue is not fixed. A CRC communication failure is a hardware-level problem, not a software glitch that resolves on its own. If the code comes back after a reset, proceed with inspecting the wiring harness and replacing the control board.

Related Maytag range codes

All Maytag range codes
View all 106 Maytag range codes

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

Get Started

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