mypros+
Error code reference

Bosch Dryer Error Code E:0105

Power Unit

Bosch codesBosch dryer codes

Power Unit - door switch circuit error (4-digit equivalent of E:36).

First step from the service manual

Check door switch electrical connections.

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

MyPros+ Max

Get the full diagnostic procedure for E:0105.

  • 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
Get the full procedure

$29/month · Cancel anytime · Or $9.95 3-day pass

What E:0105 means on a Bosch dryer

Error code E:0105 on a Bosch dryer indicates a door switch circuit fault within the power unit control system. This code is the 4-digit equivalent of the shorter E:36 code and points specifically to an electrical signal problem in the door switch circuit. The power unit monitors the door switch continuously to confirm the door is properly latched before and during a drying cycle. When the control detects an unexpected signal, an open circuit, or a short within that circuit, it triggers E:0105 and halts operation to prevent the drum from running with an open or unsecured door.

The door switch circuit includes the physical door latch switch, the wiring harness connecting it to the control board, and the connectors at both ends. A fault can originate at any point along this path. The most common entry points for failure are loose or corroded connector pins at the switch or at the control board, a mechanically worn switch that no longer closes reliably, or damaged wiring caused by repeated door use over time.

Because E:0105 is a circuit-level fault rather than a simple mechanical jam, the diagnostic process should begin with a visual and physical inspection of all electrical connections in the door switch circuit before condemning any individual component. Resistance and continuity checks across the switch terminals, with the door both open and closed, will confirm whether the switch itself is operating within specification or has failed internally.

Source: manufacturer service documentation.

Common causes of E:0105

  1. 01

    Loose or disconnected electrical connector

    Wiring / connection

    The wiring connector at the door switch or at the control board can work loose over time from vibration and repeated door use. Inspect both ends of the door switch harness and reseat any connectors that feel loose or show signs of backing out.

  2. 02

    Faulty door switch

    Part replacement

    The door switch itself can wear out mechanically or develop an internal open circuit, causing it to send an incorrect signal to the power unit. A continuity test across the switch terminals with the door pressed closed will reveal whether the switch is functioning properly.

  3. 03

    Damaged wiring in the door hinge area

    Part replacement

    The wiring harness that runs to the door switch passes through or near the door hinge, where repeated flexing can cause insulation cracking or wire breakage. Inspect this section of harness carefully for chafing, pinching, or visible breaks.

  4. 04

    Corroded connector terminals

    Wiring / connection

    Moisture or heat exposure can cause oxidation on the connector pins in the door switch circuit, increasing resistance and causing intermittent or complete circuit failures. Look for greenish or darkened pin surfaces and clean or replace affected connectors as needed.

  5. 05

    Control board fault

    Part replacement

    If the wiring, connectors, and door switch all test correctly, the power unit control board itself may have a failed input circuit for the door switch signal. This is the least common cause and should only be considered after all other components have been confirmed good.

See the test procedure for each cause

Frequently asked questions about E:0105

What does E:0105 mean on a Bosch dryer?
E:0105 indicates a door switch circuit error detected by the power unit control system. It is the 4-digit version of error E:36 and means the dryer cannot confirm a valid signal from the door switch circuit. The dryer will not run while this fault is active. The circuit includes the door switch, its wiring harness, and the connectors linking it to the control board.
Can I fix E:0105 myself or do I need a technician?
Some causes of E:0105, such as a loose connector or a harness that has come unplugged, can be resolved without special tools or replacement parts. However, replacing the door switch or diagnosing a control board fault requires basic electrical testing skills and comfort working inside the dryer cabinet. If you are not comfortable performing continuity tests or working around appliance wiring, a qualified technician is the safer choice.
Is it safe to use my Bosch dryer when E:0105 is displayed?
No. The dryer is designed to stop and display this code specifically because it cannot confirm the door is securely closed. Running a dryer with an unconfirmed door position creates a safety risk, as the drum could operate with the door open. Do not attempt to bypass or ignore this error and instead diagnose the root cause before resuming use.
Will resetting the dryer clear the E:0105 error?
A power reset by unplugging the dryer for a few minutes may temporarily clear the code if the fault was caused by a momentary signal glitch. However, if the underlying cause is a worn door switch, damaged wiring, or a loose connector, the error will return as soon as the dryer attempts to run a cycle. A reset should be treated as a first step in diagnosing, not as a fix.
How much does it cost to repair a Bosch dryer showing E:0105?
If the fix is simply reseating a loose connector, there may be no parts cost at all, though a service call to diagnose the issue typically runs between $75 and $150. Replacing the door switch itself is a relatively affordable repair, with parts generally ranging from $15 to $50 and total repair costs including labor falling in the $100 to $200 range. A control board replacement, if required, is significantly more expensive, often ranging from $200 to $400 or more depending on parts availability and labor rates in your area.

Related Bosch dryer codes

All Bosch dryer codes
View all 94 Bosch dryer codes

78,000+ service manuals · 160,000+ error codes · 55+ brands

Get Started

$29/month · Cancel anytime · Or $9.95 3-day pass