Bosch Coffee Makers Error Codes
Complete list of fault codes and troubleshooting guides. Use the search below to find your specific error.
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E01
Machine will not start a coffee cycle, display shows E01 shortly after power-on.
Flowmeter / Water Supply Fault
E02
Display shows E02 and the machine stops during heating or before brewing.
Thermal Sensor / NTC Fault on Thermoblock or Boiler
E03
Machine displays E03 and will not brew; sometimes accompanied by no water flow from spout.
Pump / Pressure System Fault
E04
Display shows E04 and the machine stops; often occurs when trying to brew or rinse.
Brew Unit Drive / Positioning Fault
E05
Machine shows E05 and may stop during steam or milk frothing operations.
Steam Thermoblock / Overheat Fault
E06
Display shows E06; grinder does not run or stops quickly when trying to brew.
Grinder Motor / Bean Sensor Fault
E07
Machine displays E07 and may leak slightly into the drip tray; brewing stops prematurely.
Drain Valve / Diverter Valve Fault
E08
Display shows E08; machine may not detect the water tank or stops with a water supply error even when tank is full.
Water Tank Presence / Level Detection Fault
E09
Machine shows E09 and does not heat water; coffee is cold or not dispensed.
Main Heater / Thermoblock Failure
E10
Display shows E10; machine may stop during rinsing or brewing with unusual noises from inside.
Internal Leak / Drip Tray Overflow Sensor Fault
E11
Machine displays E11 and may not respond to touch inputs correctly.
User Interface / Touch Control Fault
E12
Display shows E12; machine may not complete self-test and stops shortly after power-on.
Home Position / Brew Drive Sensor Fault
E13
Machine shows E13; often associated with steam or hot water functions not working correctly.
Steam Circuit Temperature / Sensor Fault
E14
Display shows E14; machine may shut down unexpectedly or not power up fully.
Power Supply / Low Voltage Fault
E15
Machine displays E15 and may not start; sometimes accompanied by a continuous pump noise.
Water Leakage / Safety Float Activation
E16
Display shows E16; machine may not recognize the bean container or grinder function.
Bean Container / Grinder Sensor Fault
E17
Machine shows E17; often related to milk system or carafe not detected.
Milk System / Carafe Detection Fault
E18
Display shows E18; machine may not complete descaling or cleaning cycles.
Descaling / Cleaning Program Fault
Symptom
Coffee is too strong or bitter, with very slow flow from the spouts.
Over-Extraction / Restricted Flow
Symptom
Coffee is weak or watery even on strong settings.
Under-Extraction / Incorrect Grind or Dose
Symptom
Coffee maker does not power on at all; no lights or display.
No Power / Dead Appliance
Symptom
Display is very dim, flickering, or unreadable, but machine still operates.
Display / Backlight Degradation
Symptom
Grinder is very loud, squeals, or makes grinding noises without beans.
Grinder Mechanical Damage
Symptom
Machine displays 'Empty drip tray' or 'Empty grounds container' even when they are empty and correctly inserted.
Tray / Container Sensor Fault
Symptom
Machine displays 'Fill beans' or similar message even though the bean container is full.
Bean Level / Grinder Load Detection Issue
Symptom
Machine emits a burning smell or electrical odor during operation.
Overheating / Electrical Component Failure
Symptom
Machine frequently asks to descale even after descaling was just performed.
Descale Sensor / Program Logic Issue
Symptom
Machine has a sour or rancid smell and coffee tastes off.
Contamination / Lack of Cleaning
Symptom
Machine leaks coffee or water into the interior around the brew unit area.
Brew Unit Seal Failure
Symptom
Machine leaks water under the unit or inside the cabinet.
Internal Water Leak
Symptom
Machine makes loud banging or clicking noises during startup or brewing.
Brew Drive / Gearbox Noise
Symptom
Machine powers on but will not start brewing; pressing start does nothing.
Start Inhibit / Safety Interlock Not Satisfied
Symptom
Machine shuts off unexpectedly during brewing or steaming.
Thermal Overload / Power Interruption
Symptom
Machine vibrates excessively or is very noisy during grinding or brewing.
Excessive Vibration / Mounting Issue
Symptom
Milk froth is poor, large bubbles, or no froth at all.
Milk Frothing Performance Issue
Symptom
No coffee comes out, but you hear the grinder and pump running.
Brew Path Blockage
Symptom
Steam or hot water output is weak or intermittent.
Restricted Steam / Hot Water Flow
Symptom
Touch buttons or rotary selector are unresponsive or respond erratically.
User Interface Input Fault
Symptom
Water or coffee drips continuously from the spout after brewing has finished.
Non-Closing Outlet / Valve Leak
Symptom
Water tank level is not detected correctly; machine stops with 'Fill water' even when tank is full.
Water Level Detection Issue
| Error Code | Symptom | Fault Type | Guide |
|---|---|---|---|
| E01 |
Machine will not start a coffee cycle, display shows E01 shortly after power-on.
|
Flowmeter / Water Supply Fault | View Details |
| E02 |
Display shows E02 and the machine stops during heating or before brewing.
|
Thermal Sensor / NTC Fault on Thermoblock or Boiler | View Details |
| E03 |
Machine displays E03 and will not brew; sometimes accompanied by no water flow from spout.
|
Pump / Pressure System Fault | View Details |
| E04 |
Display shows E04 and the machine stops; often occurs when trying to brew or rinse.
|
Brew Unit Drive / Positioning Fault | View Details |
| E05 |
Machine shows E05 and may stop during steam or milk frothing operations.
|
Steam Thermoblock / Overheat Fault | View Details |
| E06 |
Display shows E06; grinder does not run or stops quickly when trying to brew.
|
Grinder Motor / Bean Sensor Fault | View Details |
| E07 |
Machine displays E07 and may leak slightly into the drip tray; brewing stops prematurely.
|
Drain Valve / Diverter Valve Fault | View Details |
| E08 |
Display shows E08; machine may not detect the water tank or stops with a water supply error even when tank is full.
|
Water Tank Presence / Level Detection Fault | View Details |
| E09 |
Machine shows E09 and does not heat water; coffee is cold or not dispensed.
|
Main Heater / Thermoblock Failure | View Details |
| E10 |
Display shows E10; machine may stop during rinsing or brewing with unusual noises from inside.
|
Internal Leak / Drip Tray Overflow Sensor Fault | View Details |
| E11 |
Machine displays E11 and may not respond to touch inputs correctly.
|
User Interface / Touch Control Fault | View Details |
| E12 |
Display shows E12; machine may not complete self-test and stops shortly after power-on.
|
Home Position / Brew Drive Sensor Fault | View Details |
| E13 |
Machine shows E13; often associated with steam or hot water functions not working correctly.
|
Steam Circuit Temperature / Sensor Fault | View Details |
| E14 |
Display shows E14; machine may shut down unexpectedly or not power up fully.
|
Power Supply / Low Voltage Fault | View Details |
| E15 |
Machine displays E15 and may not start; sometimes accompanied by a continuous pump noise.
|
Water Leakage / Safety Float Activation | View Details |
| E16 |
Display shows E16; machine may not recognize the bean container or grinder function.
|
Bean Container / Grinder Sensor Fault | View Details |
| E17 |
Machine shows E17; often related to milk system or carafe not detected.
|
Milk System / Carafe Detection Fault | View Details |
| E18 |
Display shows E18; machine may not complete descaling or cleaning cycles.
|
Descaling / Cleaning Program Fault | View Details |
| – |
Coffee is too strong or bitter, with very slow flow from the spouts.
|
Over-Extraction / Restricted Flow | View Details |
| – |
Coffee is weak or watery even on strong settings.
|
Under-Extraction / Incorrect Grind or Dose | View Details |
| – |
Coffee maker does not power on at all; no lights or display.
|
No Power / Dead Appliance | View Details |
| – |
Display is very dim, flickering, or unreadable, but machine still operates.
|
Display / Backlight Degradation | View Details |
| – |
Grinder is very loud, squeals, or makes grinding noises without beans.
|
Grinder Mechanical Damage | View Details |
| – |
Machine displays 'Empty drip tray' or 'Empty grounds container' even when they are empty and correctly inserted.
|
Tray / Container Sensor Fault | View Details |
| – |
Machine displays 'Fill beans' or similar message even though the bean container is full.
|
Bean Level / Grinder Load Detection Issue | View Details |
| – |
Machine emits a burning smell or electrical odor during operation.
|
Overheating / Electrical Component Failure | View Details |
| – |
Machine frequently asks to descale even after descaling was just performed.
|
Descale Sensor / Program Logic Issue | View Details |
| – |
Machine has a sour or rancid smell and coffee tastes off.
|
Contamination / Lack of Cleaning | View Details |
| – |
Machine leaks coffee or water into the interior around the brew unit area.
|
Brew Unit Seal Failure | View Details |
| – |
Machine leaks water under the unit or inside the cabinet.
|
Internal Water Leak | View Details |
| – |
Machine makes loud banging or clicking noises during startup or brewing.
|
Brew Drive / Gearbox Noise | View Details |
| – |
Machine powers on but will not start brewing; pressing start does nothing.
|
Start Inhibit / Safety Interlock Not Satisfied | View Details |
| – |
Machine shuts off unexpectedly during brewing or steaming.
|
Thermal Overload / Power Interruption | View Details |
| – |
Machine vibrates excessively or is very noisy during grinding or brewing.
|
Excessive Vibration / Mounting Issue | View Details |
| – |
Milk froth is poor, large bubbles, or no froth at all.
|
Milk Frothing Performance Issue | View Details |
| – |
No coffee comes out, but you hear the grinder and pump running.
|
Brew Path Blockage | View Details |
| – |
Steam or hot water output is weak or intermittent.
|
Restricted Steam / Hot Water Flow | View Details |
| – |
Touch buttons or rotary selector are unresponsive or respond erratically.
|
User Interface Input Fault | View Details |
| – |
Water or coffee drips continuously from the spout after brewing has finished.
|
Non-Closing Outlet / Valve Leak | View Details |
| – |
Water tank level is not detected correctly; machine stops with 'Fill water' even when tank is full.
|
Water Level Detection Issue | View Details |
No matching codes found
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