55-00color laserjet pro m155a

HP Color LaserJet Pro M155a error 55.00: Comm Fault

The HP Color LaserJet Pro M155a error 55.00 is an internal communication failure between the printer's main controller (DC Controller) and its engine motor. This prevents the printer from initializing, stopping all workflows instantly.

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Common causes

  • 1DC Controller communication error.
  • 2Corrupted system firmware.
  • 3Power regulation fault on board.
  • 4High EMI interference.

Solutions

Quick Diagnosis

If this error persists, the hardware internal board (DC Controller) is failing to relay information to the motor units.

Step-by-step Solution

  1. Disconnect the power cord.
  2. Wait for 15 minutes to let capacitors drain.
  3. Re-plug into a wall outlet directly.
  4. Check the HP support site for a firmware update if the unit allows it.

Maintenance and Prevention

Use a surge protector. Avoid power surges by ensuring your electrical wiring is stable.

When to contact a technician

If 55.00 appears on every boot, the DC Controller board requires replacement by a qualified service center.

Device Technical Specifications

  • Technology: Color Laser
  • Controller: Integrated DC Controller
  • Supplies: Toner 215A
  • Communication: Internal digital link
  • Drivers / firmware

Steps to follow

  1. 1

    Reset

    Power off and unplug the device completely.

  2. 2

    Check connections

    Verify internal cables are seated correctly.

  3. 3

    Update

    Install latest official firmware.

Frequently asked questions

It is a digital communication error between the DC controller and the print engine motor.

Try a full power reset. If it repeats, the issue is typically a board or firmware fault.

The printer will not print at all while this error is present.

No, it is an electronic board error that simply disables device functionality.