Lock symbol or controls won't respond
The cooktop has power, but the touch controls do nothing or a lock indicator stays on.
Start here: Start with the control lock and touch-panel cleaning check.
Cooktop troubleshooting
Bosch Cooktop Error Codes
Direct answer: Bosch cooktop error codes usually point to one of a few real-world problems: the controls are locked, the touch area is wet or dirty, the unit overheated, the pan is not being detected on an induction zone, or a burner control part has failed. Start with the display behavior and what the cooktop is doing right now, not with parts.
Most likely: The most common fixes are drying and cleaning the control area, clearing anything resting on the glass, letting an overheated zone cool down fully, and doing a full power reset at the breaker.
Separate the easy lookalikes first. If the cooktop still heats and only one zone acts up, think burner-specific trouble. If every zone is dead or the touch panel is flashing, think lock mode, moisture, power reset, or a control problem. Reality check: some codes are just the cooktop telling you it protected itself. Common wrong move: scrubbing the touch panel with a soaking-wet rag and making the code worse.
Don’t start with: Do not start by ordering a cooktop switch, igniter, or burner just because a code showed up. A lot of these codes clear once the control area is dry, the lock is off, or power has been reset.
If the display shows a lock symbol or the controls ignore you,check for control lock before assuming the cooktop failed.
If the code appeared after boiling over or heavy cooking,dry the glass and let the cooktop cool completely before going deeper.
Last reviewed: 2026-04-17
What the code is doing helps more than the code alone
Code appeared after a spill or cleaning
The display started beeping, flashing, or showing an error after water, steam, or cleaner got on the glass.
Start here: Dry the control area completely and reset power before assuming a failed part.
One burner shows the problem
Only one cooking zone will not heat, drops out, or keeps showing a code while the others work normally.
Start here: Focus on that burner zone, cookware fit, and the burner control part for that position.
Whole cooktop shut down or keeps flashing
Multiple zones stopped working, the display cycles, or the unit comes back only after cooling off.
Start here: Check for overheating, blocked airflow below the cooktop, and then do a full breaker reset.
Most likely causes
1. Moisture or residue on the touch controls
This is one of the most common reasons for random beeping, flashing displays, false touches, and temporary error codes, especially after boil-overs or wiping the glass.
Quick check: Dry the entire control area with a soft cloth, remove any pot or utensil touching the panel, and wait a few minutes.
2. Control lock is on
A locked cooktop can look dead even though power is present. Homeowners often read the display as a fault when it is just locked out.
Quick check: Look for a lock symbol or a control that responds only after a long press on the lock area.
3. Overheat protection tripped
If the code showed up during heavy cooking, after a large pan trapped heat, or inside a tight cabinet with poor airflow, the cooktop may shut a zone down to protect itself.
Quick check: Turn the unit off, let it cool fully, and make sure the area below the cooktop is not packed with stored items blocking ventilation.
4. A burner-specific part or control has failed
When one zone repeatedly throws the same error after cleaning, cooling, and resetting, the problem is more likely in that burner's switch, igniter, or surface element depending on cooktop type.
Quick check: See whether the same burner fails every time while the rest of the cooktop works normally.
Step-by-step fix
Step 1: Match the error to the way the cooktop is acting
The same display can mean very different things depending on whether the whole cooktop is down, one burner is down, or the controls are simply locked or wet.
- Write down the exact code or symbol before you reset anything.
- Check whether the whole cooktop is affected or only one burner zone.
- Notice whether the cooktop still powers on, beeps, flashes, or heats briefly before shutting off.
- If there was a recent spill, boil-over, deep cleaning, or heavy cooking session, treat that as your first clue.
Next move: You now have the problem narrowed to lock/moisture, overheating, or one bad burner path instead of guessing. If the display is blank and the cooktop is completely dead, the issue may be incoming power or a failed main control, which is not a good guess-and-buy situation.
What to conclude: A code by itself is not enough. The behavior around it tells you where to look first.
Stop if:
- You smell burning insulation or see scorching under the glass.
- The glass is cracked or chipped near the affected burner.
- The breaker trips immediately when the cooktop is turned on.
Step 2: Clear lock mode and dry the control area completely
Locked controls and moisture on the touch panel cause a lot of false error calls, and they are the safest things to rule out first.
- Remove all cookware, utensils, foil, and anything resting on the glass near the controls.
- Wipe the control area and surrounding glass dry with a soft cloth.
- If there is greasy residue, use a lightly damp cloth with a little mild dish soap, then wipe again with clean water and dry fully.
- Try the control lock command shown on the panel, usually a press-and-hold on the lock area for several seconds.
- Wait 2 to 5 minutes with the surface dry before testing again.
Next move: If the code clears and the controls respond normally, the problem was lock mode, moisture, or residue on the touch area. If the same code returns right away on a dry panel, move on to cooling and power reset.
What to conclude: A cooktop that comes back after drying usually does not need parts.
Step 3: Let the cooktop cool fully and check for blocked airflow
Cooktops can shut down a hot zone or the whole unit when heat builds up faster than it can escape.
- Turn the cooktop off and leave it off until the surface and cabinet below feel cool.
- Open the cabinet or drawer below and remove stored pans, liners, or items packed tightly against the underside of the cooktop.
- Make sure no oversized pan was covering the control area or trapping heat over the front edge.
- After cooling, test one burner at a moderate setting instead of turning several zones on high at once.
Next move: If the code stays gone after a full cool-down, overheating was the likely trigger. If the code returns on a cool cooktop with normal use, keep going.
Step 4: Do a full breaker reset and retest one burner at a time
A proper power reset can clear a latched fault after a surge, false touch event, or temporary control glitch.
- Turn the cooktop off at the controls.
- Switch the cooktop breaker off for at least 2 minutes.
- Turn the breaker back on and wait for the display to settle.
- Test one burner zone at a time, starting with the one that showed the code most often.
- On an induction cooktop, use a pan that normally works on another zone before blaming the burner.
Next move: If the code clears and normal cooking returns, the fault was likely temporary and no part is supported yet. If one burner still fails while the others work, you have a burner-specific problem. If every zone still fails, the control side is more likely.
Step 5: Use the repeat pattern to decide whether a part is justified or a pro is the right next move
Once the easy causes are ruled out, the repeat pattern tells you whether you are dealing with a single burner part or a broader control failure.
- If only one electric radiant burner never heats or heats unevenly after the reset, suspect that cooktop surface element or its cooktop burner switch.
- If only one gas burner will not light but you hear clicking and other burners work, the likely part is that cooktop igniter or burner assembly, not the whole cooktop.
- If one induction zone repeatedly rejects known-good pans while other zones work, the fault is usually internal to that burner circuit and is better handled as a model-specific service call.
- If all burners or the whole touch panel keep throwing errors after drying, cooling, and resetting, stop short of random parts and schedule service for control diagnosis.
A good result: You have a clear next move: replace the confirmed burner-specific part or call for service on a whole-cooktop control fault.
If not: If the symptoms do not stay consistent, keep the unit off and get a technician involved rather than chasing intermittent electrical faults.
What to conclude: Consistent single-burner failure supports a burner part. Whole-cooktop repeat errors usually do not.
Replacement Parts
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FAQ
What does it mean when my Bosch cooktop shows an error code but still works?
Usually the cooktop is warning about a temporary condition such as moisture on the controls, overheating, or a pan-detection issue on one zone. If it clears after drying, cooling, or a breaker reset, that points away from a failed part.
Why did the code show up right after I cleaned the cooktop?
The touch controls can read water, cleaner residue, or a damp cloth as a stuck touch. Dry the panel completely and give it a few minutes before testing again.
Should I reset the breaker right away?
Yes, but do the simple checks first. Clear any lock mode, dry the control area, and let the cooktop cool if it was just used hard. Then do a full breaker reset for at least 2 minutes.
If only one burner shows the error, is that a bad sign?
It is actually useful. One repeat offender usually means a burner-specific problem, such as a cooktop surface element, cooktop burner switch, cooktop igniter, or cooktop burner assembly depending on the cooktop type.
Can the wrong pan cause an error on an induction cooktop?
Yes. A pan that is too small, warped, or not induction-compatible can trigger pan-detection errors or make the zone shut off. Try a pan that works on another zone before assuming the burner failed.
When should I call for service instead of replacing a part myself?
Call for service if the whole cooktop keeps throwing codes, the breaker trips, the glass is damaged, liquid got under the glass, or the problem points to the main electronic controls rather than one burner part.