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Error code reference

Samsung Multifunction Printer Error Code #06-016

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
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What #06-016 means on a Samsung multifunction printer

Error code #06-016 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 inside the developer unit, allowing the printer to maintain consistent print density and image quality. When this sensor fails to report accurate readings, or when the control board receives a signal outside the expected parameters, the printer halts operation and logs this error to protect image quality and prevent damage to internal components.

The most common entry point for diagnosis is the T/C sensor harness connection. A loose, corroded, or damaged connector between the sensor and the main control board can interrupt the signal entirely or introduce intermittent noise that the firmware interprets as a sensor fault. Beyond connection issues, the sensor itself can fail electrically, or the imaging unit may have reached the end of its service life, causing the sensor to read toner concentration levels outside acceptable limits.

Because the T/C sensor is integrated into or closely associated with the imaging unit assembly, problems with the developer section, including low toner, contaminated developer material, or a physically damaged sensor, can all trigger this code. Technicians should begin by inspecting the harness and connector for any visible damage, then verify sensor operation before replacing the imaging unit or sensor assembly outright.

Source: manufacturer service documentation.

Common causes of #06-016

  1. 01

    Loose or disconnected T/C sensor harness

    Wiring / connection

    The harness connecting the toner concentration sensor to the control board can work loose over time, especially after an imaging unit swap. Inspect the connector at both ends for a firm, fully seated connection.

  2. 02

    Damaged or corroded harness connector

    Part replacement

    Corrosion, bent pins, or physical damage to the wiring harness can cause intermittent or absent sensor signals. Visually inspect the connector pins and wire insulation for any signs of wear or oxidation.

  3. 03

    Failed T/C sensor

    Part replacement

    The sensor itself can fail electrically, producing readings outside the expected range or no signal at all. If the harness checks out, the sensor component or imaging unit containing it will need replacement.

  4. 04

    End-of-life or depleted imaging unit

    Part replacement

    An imaging unit that has exceeded its rated page yield may have degraded developer material, causing the T/C sensor to report abnormal toner concentration values. Check the imaging unit page count against its rated life.

  5. 05

    Toner cartridge seating issue

    Wiring / connection

    An improperly installed or incompatible toner cartridge can affect toner delivery to the developer section, leading to abnormal T/C sensor readings. Remove and reseat the toner cartridge, ensuring it is the correct model for the printer.

See the test procedure for each cause

Frequently asked questions about #06-016

What does #06-016 mean on a Samsung multifunction_printer?
Error #06-016 signals a fault with the toner concentration (T/C) sensor inside the imaging unit. This sensor monitors how much toner is present in the developer assembly during printing. When the printer detects a signal problem from this sensor, it stops operation and displays this code. The issue can originate from a loose harness, a damaged connector, a failed sensor, or a worn imaging unit.
How do I fix error #06-016 on my Samsung printer?
Start by checking the T/C sensor harness connection, as a loose or poorly seated connector is the most common cause of this error. Power the printer off, reseat the imaging unit, and confirm the harness is firmly connected at both ends. If the connection is secure and the error persists, inspect the wiring for damage and consider replacing the imaging unit or the T/C sensor itself.
Will resetting my Samsung printer clear error #06-016?
A simple power cycle may temporarily clear the error, but if the underlying hardware fault is not resolved, the code will return quickly. This error is tied to a sensor hardware condition rather than a software state, so a permanent fix requires addressing the T/C sensor harness or the imaging unit itself. Resetting without repairing the root cause is not a reliable solution.
Is it safe to continue using my printer when error #06-016 is displayed?
The printer will typically halt printing when this error is active, which is by design to prevent poor output and potential internal damage. Attempting to force the printer to operate through this fault is not recommended. Addressing the error promptly protects both print quality and the longevity of internal components.
How much does it cost to repair error #06-016 on a Samsung multifunction printer?
If the fix is a reseated harness connection, there is no parts cost involved. If the wiring harness needs replacement, costs are typically in the range of $10 to $40 for the part. Replacing the full imaging unit, which is the more involved repair, generally runs between $60 and $150 or more depending on the specific printer model. Adding a technician labor fee will increase the total, so weigh repair cost against the printer's age and value.

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