Bosch Cooktop Error Codes with Solutions 2018-06-04T15:59:24+00:00

Bosch Cooktop Error Codes & Suggested Solutions

There are many Bosch appliances and in certain situations these appliances could either stop working or start working incorrectly. TAS Canada is here to help with that. On this page you will find a list of Bosch Error Codes for Cooktop (Stove) and related error codes with solutions, which can help you  solve the problem with your Bosch Home Appliance.


Please Note that before every repair you should disconnect the appliance from the mains for at least 30 seconds and then reconnect. If a fault display is still present, carry out diagnosis and troubleshooting.

  • General fault codes ƒ Glass ceramic is damp in the area of the touch key Dry and clean the glass ceramic ƒ Object on the touch key Æ Remove the object

E Continuous operation of touch key See operating instructions (no fault). ƒ Childproof lock was inadvertently activated by the user Æ Press the childproof lock key until the signal sounds (appliance ready for operation again) ƒ Automatic childproof lock is switched on Æ Switch off the childproof lock in the basic settings (c1)

N Key symbol Childproof lock See operating instructions (no fault). ƒ Basic settings were not restored Æ Run customer service programme P2

h / H (resetting to factory settings) or 0 immediately after switching on Virtual residual heat indicator ƒ Time shown in the residual heat indicator (prior to a mains reset) had not yet completely expired Residual heat indicator goes out of its own accord after a maximum of 60 minutes: h / H or 0 after activation and setting of frying sensor Frying sensor can be activated and set; settings are not applied, however ƒ Defective component Æ Replace faulty components ƒ Faulty wiring (discontinuity, short circuit, contact resistance, incorrectly plugged) Æ Check all lines and plug connections between electronic components.

F0 1. Gray code rotary selector communication error 2. Cooking/frying sensor module communication error 3. Island master/slave communication error ƒ Defective component Æ Replace faulty components

F1 TouchControl NTC fault (only for Gaggenau) ƒ The NTC in the intrinsic temperature monitoring system is sending illogical measurement values Æ Replace TouchControl Æ Allow appliance to cool down. Æ Cancel fault message by pressing a touch key.

F2 TouchControl switching off due to overheating ƒ TouchControl temperature above 105 °C See operating instructions (no fault). ƒ

F3 Cooking sensor fault, Faulty wiring Check all lines and plug connections ƒ Defective cooking sensor Æ Replace cooking sensor ƒ Defective cooking sensor module Æ Replace cooking sensor module See operating instructions

F 4 TouchControl switching off due to overheating ƒ TouchControl temperature above 120 °C Allow appliance to cool down. Æ Cancel fault message by pressing a touch key. See operating instructions (no fault).

F6 Temperature increase at the sensor does not correspond to the selected values ƒ Defective regulator module Deep fryer: ƒ No oil, or too little (protector switched off) Æ Fill with oil and switch protector on ƒ Defective heater Æ Check heater and replace if necessary ƒ No power supply to the heater (defective leads or electronics) Æ Check power supply and if necessary repair leads or replace electronics ƒ Sensor defective or not correctly fixed in place Æ Check sensor and replace if necessary ƒ Defective regulator module Æ Check regulator module and replace if necessary Teppan yaki: ƒ Defective heater Æ Check heater and replace if necessary ƒ No power supply to the heater (defective leads or electronics) Æ Check power supply and if necessary repair leads or replace electronics ƒ Sensor defective or not correctly fixed in place Æ Check sensor and replace if necessary Æ Check regulator module and replace if necessary, IH5 PH Fault code Description Cause Inspection/rectification/comment ƒ Frying sensor temperature too high Æ Allow frying sensor cooking zone to cool ƒ Faulty wiring Æ Check all lines and plug connections ƒ Defective frying sensor Æ Replace cooking zone frying sensor ƒ Defective frying sensor module Æ Replace frying sensor module See operating instructions Teppan yaki and deep fryer ƒ Sensor open/short-circuit or incorrect value Æ Replace sensor

F7 Frying sensor fault ƒ Faulty wiring Æ Check all lines and plug connections Frying sensor temperature too high Æ Allow frying sensor cooking zone to cool ƒ Faulty wiring Æ Check all lines and plug connections ƒ Defective frying sensor Æ Replace cooking zone frying sensor ƒ Defective frying sensor module Æ Replace frying sensor module See operating instructions Teppan yaki and deep fryer ƒ Sensor open/short-circuit or incorrect value Æ Replace sensor

F8 Cooking time limiter ƒ After a while, the cooking zone was switched off automatically by the cooking time limiter The cooking zone can be operated again immediately. The time depends on the selected heat setting (1 to 10 hours without setting change). See User manual (no faults). Æ Check all lines and plug connections

F9 PiezoControl fault Æ Replace PiezoPanel ƒ Data transfer fault between PiezoPanel and control/display module Æ Replace control/display module

1.2 Touch Control fault codes Æ Replace the electronics module

ErXY Internal TouchControl fault ƒ Not relevant for fault rectification XY corresponds to a number from 00 to 99 Æ Note the following special cases ƒ Cooking zones next to the control module in Æ Allow appliance to cool down. operation for long periods and using high power

Er21 and signal Control module overheating Æ Press the touch key to switch off the acoustic signal ƒ Electrical link between two touch keys Æ Remove electronics and check all touch keys (visual inspection). Refit electronics correctly

Er22 Touch key fault, Electrical link between two touch keys Æ Remove electronics and check all touch keys (visual inspection). Refit electronics correctly, Defective touch key Æ If the fault is still present, replace the Defective touch key Æ If the fault is still present, replace the electronics

Er25 Faulty electronics connection ƒ Faulty electronics connection Æ Check the connections 1. Flat conductor between TouchControl and relay circuit board incorrectly plugged Æ Check that flat conductor is plugged straight

Er26 Relay circuit board fault and firmly 1. Flat conductor between TouchControl and relay circuit board incorrectly plugged Æ Check that flat conductor is plugged straight 2. Defective relay circuit board Æ Replace complete TouchContro

Er38 Hall sensor fault at TwistPad/TipPad, Control knob incorrectly positioned Æ Fit the control knob in the correct position ƒ TipPad incorrectly operated (TipPad turning handle pushed like TwistPad turning handle) Æ Operate TipPad correctly (tip function) – see operating instructions (not a fault) Defective TwistPad/TipPad Æ Disconnect the appliance from the mains for 30 seconds and then switch on again Æ If the fault has still not been rectified, replace the TwistPad/TipPad Defective TwistPad/TipPad Æ Disconnect the appliance from the mains for 30 seconds and then switch on again Æ If the fault has still not been rectified, replace the TwistPad/TipPad Æ Check the mains connections

Er42 Power supply fault ƒ Faulty voltage Æ Replace the electronics module Disconnect the appliance from the mains immediately ƒ Excess voltage in the electronics due to a faulty connection or wiring fault

U240, U400 Excess voltage Æ Check the mains connection and wiring Disconnect the appliance from the mains immediately Æ Check the mains connection and wiring No display or function when the main switch is activated ƒ Excess voltage in the electronics due to a Safety switch-off due to excess voltage faulty connection or wiring fault ƒ No mains voltage The safety switch-off function protects the appliance in the event of a faulty connection

Contact or submit service request

Toronto Appliance Service Canada (TAS Canada) is authorized Bosch’s service provider for all Bosch home appliances. Which means that we repair Bosch’s appliances often, we know them very well and you will be happy with  our work. If you  are looking to repair Bosch appliance you are at the right place. Contact Toronto Appliance Service repair company to learn what options you have when it comes to fix Bosch appliance.