Bosch Dishwasher E01 Error: Causes & Fixes
On a Bosch dishwasher, error code E01 (also shown as E:01) means there is a heat pump motor circuit fault at the main control board, per Bosch's own support page; this is a control-board/circuit fault, not simply a failed heating element.
What Bosch dishwasher E01 means
Bosch's dishwasher error-code table shows E01 is distinct from the neighboring E02 and E03 codes: E01 is a heat pump motor circuit fault at the main control board, while E02 and E03 are both described as a main control board relay fault/error, a different control-board circuit.
Unlike E01, which Bosch documents with a 30-second breaker-reset step, E04 is described as the appliance detecting faulty heater electronics during a self-test, and Bosch's fix for E04 skips the reset step and goes straight to contacting Bosch Customer Support.
E01 and E05 are both control-board circuit faults on Bosch's list but affect different subsystems: E01 is a heat pump motor circuit fault, while E05 is a wash arm diverter circuit fault at the main control board; both use the same 30-second breaker-reset step.
E01 and E09 both concern Bosch's heat pump subsystem but are separate faults: E01 is a heat pump motor circuit fault at the main control board, while E09 is a heat pump internal heater fault/error; Bosch documents the same 30-second breaker-reset step for both before contacting support.
E01 (heat pump motor circuit fault) is distinct from E06, which Bosch describes as a door sensor circuit fault/error at the main control board; both codes are cleared using the same breaker-reset step.
E01 is documented as a control-board circuit fault, whereas the neighboring E07 code is described differently by Bosch, as the Zeolite (Crystal Dry) fan motor itself being defective rather than a circuit fault, showing that not every E-code near E01 points to the same kind of failure.
Before you work on your dishwasher
- Power: Unplug the dishwasher or switch off its circuit breaker before removing panels or touching wiring.
- Water: Turn off the water supply valve before disconnecting hoses or the inlet valve.
- Heat: Water and the heating element can be hot right after a cycle; let the dishwasher cool first.
- Sharp debris: Wear gloves when reaching into the filter or sump; broken glass often collects there.
- Stop: If you smell burning, see smoke or sparks, or find water near wiring, switch off the breaker and call a technician.
- Disconnect power before accessing internal dishwasher parts: Unplug the dishwasher or switch off the circuit breaker that powers it before removing panels, the filter, or the drain pump cover, or before reaching into the sump.
What causes Bosch E01
- Heat pump motor circuit fault at the main control board: Bosch attributes E01 to a fault in the heat pump motor circuit on the dishwasher's main control board, rather than to a simple heating-element burnout. Difficulty 5/5.
- Temporary/transient fault cleared by a power reset: Bosch's documented first step for E01 is a power reset: reset power at the breaker for about 30 seconds (or disconnect the dishwasher from the power supply for at least 5 seconds), then restore power and run a cycle to see whether the fault clears. Difficulty 1/5.
Find the cause of E01 on your dishwasher
Step-by-step checks for Bosch E01
Power-cycle the dishwasher
About 5 minutes
- Record the E01 code shown on the display.
- First try the simple reset Bosch asks for: turn the dishwasher off and then back on.
- If that does not clear it, reset power at the breaker for about 30 seconds, or disconnect the dishwasher from the power supply for a few minutes.
- Restore power and run a normal cycle to see whether the fault clears.
How to fix Bosch E01
Power-cycle the dishwasher
About 5 minutes · Difficulty 1/5
- Disconnect the dishwasher from the power supply for at least 5 seconds, or switch off its breaker for about 30 seconds.
- Reconnect power and run a normal cycle to confirm the code has cleared.
- If E01 returns, stop DIY troubleshooting and contact Bosch Customer Service.
When to call a technician about Bosch E01
- Contact Bosch Customer Service for a suspected main control board fault
Sources
- Dishwasher SP.. Instruction Manual, Bosch Home Appliances US (retrieved 2026-09-18)
- Dishwasher SMS6HAI01A User Manual, Bosch Home Appliances US (retrieved 2026-09-18)
- Bosch Dishwasher Troubleshooting & Repair Guide, Bosch Home Appliances US (retrieved 2026-09-18)
- Dishwasher Error Codes | Support | Bosch, Bosch Home Appliances US (retrieved 2026-09-19)
- e 01 error message bosch dishwasher - Bosch Dishwasher SHU5315UC-06 - iFixit, iFixit (retrieved 2026-09-19)
Reader feedback
Guidance only; follow your appliance manual and local codes. If anything looks unsafe, stop and call a qualified technician. Safety disclaimer