E:11 on Your Bosch Dishwasher: Two Sensors That Disagree

What E:11 means

Bosch fits the heat pump with a pair of NTC temperature sensors so the control can cross-check them. E:11 means their readings have drifted apart or fallen outside the expected resistance band, so the control no longer believes the water temperature it is being given. The service instruction: measure both, replace the pump when one reads wrong, or fix the connections when those are to blame.

Common causes of E:11

One NTC in the heat pump drifted or failed
Connector at the pump loose or corroded
Cable run from the pump to the power module damaged

✓ One safe check you can try

1. Skip any panel removal; this is a meter test at the pump connector on a dead machine. 2. Over the next few loads, notice whether the wash water seems cooler than before, or the dishes feel less clean. 3. Pass that along when you call so we know what to expect.

! Why to stop there

Each sensor must be read at specific pins, and a mistake in reading can condemn a good pump.
The heat pump is a costly part, so replacing it without measuring is an expensive way to guess.
Corroded connectors can mimic a failed sensor, and a reflowed connection costs far less than a new pump.

Opening a panel yourself does not automatically cancel a manufacturer warranty, but it can cause accidental damage, and some manufacturers set their own service conditions. Check your warranty terms, or ask us, before deciding.

→Same appliance

Other Dishwasher codes

E:01Bosch Dishwasher E:01: Cycle Ended Early, Heater Relay or Pump Unconfirmed E:30Bosch Dishwasher E:30, Voltage Too High and the Machine Shut Down E:31Water in the Zeolite Container - Bosch Dishwasher E:31 FBosch Dishwasher F on an Older Display (Water Filling) 2HBosch Dishwasher 2H: Long Cycle Warning on Older Displays 1Bosch Dishwasher Service Test Result 1: Aqua Sensor 2Bosch Dishwasher Service Test Result 2: Heating Group 4Bosch Dishwasher Service Test Result 4: Water Filling

E:11E:11 questions

Why does Bosch use two sensors?

So the control can cross-check. If both agree the reading is trusted; if they diverge, the machine flags E:11 rather than wash with water that might be too hot or too cold.

Can E:11 clear by itself?

Occasionally a damp connector dries out and the reading returns to normal, but the cause is still there. If it comes back, it is better to have the sensors measured than to wait for it to settle.

Will you replace the whole heat pump?

Only if a sensor measures out of range, because that is how the part is supplied. If the wiring is the problem, we repair that instead, and the written price reflects whichever job applies.