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Error code reference

Bosch Dryer Error Code E:2013

Drum temperature NTC defective

Bosch codesBosch dryer codes

Drum temperature NTC defective - drying tunnel inlet NTC error (Error) (4-digit equivalent of E:08).

First step from the service manual

Check NTC wire harness and connectors.

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

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What E:2013 means on a Bosch dryer

Error code E:2013 on a Bosch dryer indicates a fault with the drum temperature NTC sensor located at the drying tunnel inlet. This is the 4-digit equivalent of the older E:08 code. The NTC (Negative Temperature Coefficient) thermistor is a resistance-based temperature sensor that changes its electrical resistance in response to heat. As temperature rises, the resistance of an NTC sensor decreases in a predictable curve. The dryer's control board monitors this resistance continuously to regulate drum temperature during the drying cycle. When the board receives a signal that falls outside the expected resistance range, it flags the sensor circuit as defective and triggers E:2013.

The drying tunnel inlet NTC is positioned to measure incoming air temperature before it reaches the drum, giving the control board critical data for managing heat output and protecting fabrics. A defective reading can result from an open circuit, a short circuit, or severely degraded sensor resistance caused by heat damage or age. Because the control board cannot confirm accurate temperature data, it will halt or interrupt the drying cycle as a safety measure.

The first diagnostic step is to inspect the NTC wire harness and all connectors in that circuit. Loose, corroded, or damaged connector pins are a frequent cause of intermittent or permanent NTC faults, and they should be checked before condemning the sensor itself. If the harness checks out, the NTC sensor resistance should be measured at the sensor terminals and compared against the expected temperature-resistance curve for the specific unit.

Source: manufacturer service documentation.

Common causes of E:2013

  1. 01

    Loose or corroded NTC connector

    Wiring / connection

    A poor connection at the NTC sensor connector or along the wire harness is the most common cause of this error. Inspect all connectors in the NTC circuit for corrosion, bent pins, or incomplete seating.

  2. 02

    Damaged NTC wire harness

    Part replacement

    The wiring between the NTC sensor and the control board can become pinched, frayed, or broken, especially near routing clips or moving components. A continuity test along the harness will reveal any open or short circuit.

  3. 03

    Failed NTC temperature sensor

    Part replacement

    The NTC thermistor itself can fail due to heat stress or age, producing a resistance value outside the acceptable range. If the harness and connectors are intact, measure the sensor resistance directly to determine if the sensor has drifted or failed open.

  4. 04

    Moisture or contamination in the connector

    Wiring / connection

    Lint buildup or moisture intrusion into the NTC connector can alter resistance readings and trigger this fault. Cleaning the connector thoroughly and ensuring the harness routing keeps it away from moisture sources may resolve the issue.

  5. 05

    Faulty control board

    Part replacement

    If the NTC sensor and its entire wiring circuit test correctly, the control board may be misreading the signal due to a failed input circuit on the board itself. This is the least common cause and should only be considered after all other components are confirmed good.

See the test procedure for each cause

Frequently asked questions about E:2013

What does E:2013 mean on a Bosch dryer?
E:2013 indicates a defective drum temperature NTC sensor at the drying tunnel inlet. This is the 4-digit equivalent of the legacy E:08 code. The control board monitors the NTC sensor's resistance to track air temperature entering the drum, and this error appears when that circuit produces a reading outside the expected range. The dryer will stop the cycle until the fault is resolved.
How do I fix error code E:2013 on a Bosch dryer?
Start by inspecting the NTC sensor wire harness and all connectors for damage, corrosion, or loose pins, as connection issues are the most frequent cause. If the wiring checks out, test the NTC sensor resistance directly at its terminals to see if the sensor has failed. Depending on the findings, the repair will involve either reseating connectors, replacing the wire harness, or replacing the NTC sensor itself.
Is it safe to keep using my dryer when E:2013 is displayed?
No, you should not continue using the dryer while E:2013 is active. The error means the control board cannot reliably monitor drum inlet temperature, which removes an important safety layer that protects against overheating. Running the dryer in this condition could pose a fire risk or damage your clothing. Have the fault diagnosed and repaired before resuming use.
Will resetting the dryer clear the E:2013 error?
A reset may temporarily clear the error code from the display, but it will return as soon as the control board samples the NTC circuit again and detects the same out-of-range reading. The underlying fault in the sensor, wiring, or connector must be corrected for the code to stay cleared. Repeated resets without repair do not resolve the root cause.
How much does it cost to repair a Bosch dryer showing E:2013?
If the fix is a loose or corroded connector, the cost may be limited to a service call fee, typically in the range of $75 to $150. Replacing an NTC sensor or a section of wiring harness generally adds $50 to $200 in parts depending on the specific model. If the control board is at fault, repair costs can rise to the $200 to $400 range or higher, including parts and labor.

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