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Error code reference

Samsung Multifunction Printer Error Code #06-013

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 #06-013 means on a Samsung multifunction printer

Error code #06-013 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 particles to carrier beads inside the developer unit, allowing the printer to regulate toner density and maintain consistent print quality. When this sensor fails to communicate expected readings, or reports values outside the acceptable range, the printer halts operation and logs this error to prevent degraded output or internal component damage.

The most common entry point for diagnosing this fault 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 path and cause the printer to register a sensor error even when the sensor itself is functional. Wiring harnesses routed near moving components can develop intermittent breaks or wear points that produce inconsistent sensor readings under operating conditions.

If the harness and connectors check out, the fault may lie with the T/C sensor itself, which can fail due to contamination from toner accumulation, physical damage, or component aging. The imaging unit as a whole should also be evaluated, as a failing or improperly seated imaging unit can prevent the sensor from obtaining valid readings. In some cases, the main board circuitry responsible for processing the sensor signal may be at fault, though this is a less frequent cause.

Source: manufacturer service documentation.

Common causes of #06-013

  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 developed a poor connection. Inspecting and reseating the connector at both ends is the recommended first step.

  2. 02

    Damaged wiring harness

    Part replacement

    The harness itself may have a break, pinch, or wear point that interrupts the sensor signal. Visually trace the harness for any visible damage and test for continuity.

  3. 03

    Failed or contaminated T/C sensor

    Part replacement

    The T/C sensor can fail outright or become coated with toner particles, causing it to read incorrectly. If the harness is intact, the sensor should be inspected for contamination or replaced.

  4. 04

    Faulty or improperly seated imaging unit

    Part replacement

    An imaging unit that is not fully seated or is near the end of its service life may prevent the T/C sensor from obtaining valid readings. Removing and reinstalling the imaging unit can rule out a seating issue.

  5. 05

    Main control board fault

    Part replacement

    If the sensor, harness, and imaging unit all test correctly, the board circuitry that processes the T/C sensor signal may be defective. This is the least common cause and typically requires board-level diagnostics or replacement.

See the test procedure for each cause

Frequently asked questions about #06-013

What does #06-013 mean on a Samsung multifunction_printer?
Error #06-013 indicates a problem with the toner concentration (T/C) sensor in the imaging unit. This sensor monitors the toner-to-carrier ratio inside the developer section to regulate print density. When the sensor signal is absent or out of range, the printer stops and displays this code to prevent print quality issues or internal damage.
How do I fix error #06-013 on my Samsung printer?
Start by checking the T/C sensor harness connection, ensuring it is fully seated at both the sensor and control board ends. If the connection is secure, inspect the harness for physical damage and test for continuity. If the wiring is intact, the T/C sensor itself or the imaging unit may need to be replaced. In rare cases, the main control board is responsible.
Will resetting the printer clear error #06-013?
A simple power cycle or reset is unlikely to permanently clear this error because it is triggered by an active hardware fault in the T/C sensor circuit. The error will typically return if the underlying issue with the sensor, harness, or imaging unit has not been resolved. Resetting may be useful as a temporary step to confirm whether the fault is intermittent, but it is not a substitute for proper diagnosis.
Is it safe to continue using my printer when error #06-013 appears?
The printer will generally halt operation when this error is active, which is intended to prevent poor output and protect internal components. You should not attempt to bypass the error and continue printing without addressing the root cause. Operating with a faulty T/C sensor can lead to inconsistent toner application and potential damage to the imaging unit or developer assembly.
How much does it cost to repair error #06-013 on a Samsung multifunction printer?
If the fix is simply reseating a loose harness connector, there may be no parts cost involved, only labor time. Replacing a T/C sensor or wiring harness typically ranges from moderate to mid-level parts cost, generally between $20 and $80 depending on the model and supplier. If the imaging unit itself needs replacement, costs can range from $50 to $200 or more. Main board replacement represents the most expensive scenario, often ranging from $150 to $400 or higher.

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