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Error code reference

Samsung Multifunction Printer Error Code #06-015

Imaging unit error

Samsung codesSamsung multifunction printer codes

Imaging unit error - T/C sensor issue.

First step from the service manual

Check the T/C sensor Harness connection.

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

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  • 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
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What #06-015 means on a Samsung multifunction printer

Error code #06-015 on a Samsung multifunction printer indicates a fault within the imaging unit, specifically related to the toner concentration (T/C) sensor. The T/C sensor monitors the ratio of toner to carrier beads within the developer unit, providing real-time feedback to the printer's control system so that toner density can be regulated accurately. When this sensor fails to report a signal within expected parameters, the printer halts operation and logs this error to prevent print quality degradation or internal component damage.

The most common origin of this fault is a wiring or connection problem between the T/C sensor and the printer's main control board. A loose, corroded, or damaged harness connector can interrupt the signal path, causing the control board to read an out-of-range or absent voltage from the sensor. This is why the first diagnostic step involves inspecting the T/C sensor harness connection directly.

Beyond connection issues, the T/C sensor itself can fail due to contamination from toner particles, physical damage, or component aging. The imaging unit as a whole may also be at fault if internal components have worn to a point where the sensor cannot function correctly. In some cases, the issue originates at the main board if it is unable to process or supply the correct signal to the sensor circuit. Systematic testing of each element in the signal chain is necessary to isolate the root cause before replacing parts.

Source: manufacturer service documentation.

Common causes of #06-015

  1. 01

    Loose or disconnected T/C sensor harness

    Wiring / connection

    The wiring harness connecting the toner concentration sensor to the control board may have come loose or been improperly seated. Inspect the connector at both ends of the harness for proper engagement and signs of damage.

  2. 02

    Damaged or corroded harness connector

    Part replacement

    Corrosion, bent pins, or physical damage to the harness connector can interrupt the sensor signal even when the connector appears seated. Visually inspect the connector pins and check for continuity along the harness.

  3. 03

    Failed T/C sensor

    Part replacement

    The toner concentration sensor itself may have failed due to toner contamination, wear, or electrical fault. If the harness checks out, the sensor will need to be tested and likely replaced.

  4. 04

    Defective or worn imaging unit

    Part replacement

    The imaging unit as a whole may have reached end of life or suffered internal damage, causing the T/C sensor to malfunction even if the sensor and harness are intact. Replacing the imaging unit may be required.

  5. 05

    Main control board fault

    Part replacement

    If the harness, connector, and sensor all test correctly, the main control board may be unable to properly supply or read the sensor signal. This is the least common cause and typically requires board-level diagnosis or replacement.

See the test procedure for each cause

Frequently asked questions about #06-015

What does #06-015 mean on a Samsung multifunction_printer?
Error #06-015 indicates a problem with the toner concentration (T/C) sensor inside the imaging unit. This sensor monitors toner density during printing, and when it fails to communicate a valid signal, the printer stops operation and displays this code. The fault can stem from a loose harness connection, a damaged connector, a failed sensor, or a defective imaging unit.
How do I fix error #06-015 on my Samsung printer?
Start by powering off the printer and checking the T/C sensor harness connection for loose or damaged connectors. Reseat the harness firmly at both ends and inspect the pins for corrosion or bending. If the connection is secure and the error persists, the T/C sensor or imaging unit may need to be replaced. A qualified technician can perform continuity testing on the harness and sensor to confirm which component has failed.
Will resetting the printer clear error #06-015?
A simple power cycle or reset is unlikely to permanently clear error #06-015 because it points to a hardware fault in the T/C sensor circuit. The error may disappear temporarily after a reset, but it will return if the underlying problem with the sensor or harness is not corrected. Addressing the root cause is necessary for a lasting fix.
Is it safe to continue using my printer while error #06-015 is displayed?
It is not recommended to continue printing with this error active. The T/C sensor controls toner concentration, and operating without accurate feedback can result in poor print quality and potential damage to internal components. The printer typically halts automatically to prevent this, and the underlying fault should be resolved before resuming normal use.
How much will it cost to repair error #06-015 on a Samsung printer?
Repair costs vary depending on the failed component. If the issue is only a loose or damaged harness, the cost may be minimal, primarily covering a service call or technician labor in the range of $50 to $150. Replacing the T/C sensor or imaging unit will add parts costs, which can range from $30 to $200 or more depending on the specific model. A main control board replacement would be the most expensive scenario, potentially reaching $150 to $400 or higher for parts and labor.

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