My bosch5315 dishwasher displays error code 1. Is this a problem with the temperature sensor, the heat pump, or the control module?

About the F4 error code on the Fisher and Paykel DD60DDFX9 dishwasher:
The F4 error code on your DD60DDFX9 dishwasher indicates a fault with the heating element or the temperature sensor. When the dishwasher encounters a heating fault, it is unable to heat the water to the correct temperature required for the wash and rinse cycles. This can result in poor cleaning performance and may also affect the dishwasher's ability to sanitize the dishes.
To troubleshoot the F4 error code, you can try the following:

1. Check the heating element: Use a multimeter to test the heating element for continuity. If the heating element is faulty, it will need to be replaced.
2. Check the temperature sensor: Test the temperature sensor using a multimeter. The sensor should show a resistance value of between 10,000 and 12,000 ohms at room temperature. If the resistance value is outside of this range, the sensor may need to be replaced.
3. Check the wiring and connections: Inspect the wiring and connections between the heating element and the control board. Make sure all connections are secure and free of damage or corrosion.
4. Check the control board: If the heating element and temperature sensor are both working properly, the issue may be with the control board. A certified repair technician will need to diagnose and replace the control board if necessary.

Error Code 05 is a NTC fault, either open circuit or shorted.
If during the water heating step in the wash cycle, the water temperature sensor (NTC) value is out of range, the "E05" error code will be displayed.

Possible Causes / Procedure:
1. Unplug washer or disconnect power.
2. Check the water temperature sensor. Check connections to the water temperature sensor.
3. Check resistance of heating element, if present on this model. (abnormal = infinity).

Replace failed component. It could be the sensor or the temperature control module (NTC module).

Good luck.

ALARMS THAT STOP THE DISHWASHER

A1 Want of water

Is the water cock open?

Does the water load solenoid valve work?

Is the water feed flow a min. of 5 l/min?

Is the water inlet filter clean?

Is the load solenoid valve filter clean?

Is the overflow inserted?

Do the tank/boiler pressure switches work properly?



C9 Automatic hood out of order

Alarm codes for automatic hood type dishwasher (see paragraph 9.2.1 Alarm codes for automatic

hood type dishwashers)



C12 Tank level sensor out of order

Are the connectors correctly connected?

Are connector contacts cleaned?

Does the air trap of the tank work correctly?

Is the level sensor broken (replace it with a new one)?



Alarm codes for automatic hood type dishwashers

When the alarm C9 appears, to facilitate fault-finding a parameter providing a more detailed indication has

been introduced.

The parameter is C9 and is found in the ron family.

The possible cause of the anomaly can be found (see next table) according to the value of the parameter C9.

E.g.: With an automatic hood type the alarm C9 appears.

Access the parameter C9 in the ron family.

Assuming the value displayed is:

20 ? During lifting, the current absorbed by the lifting motor has exceeded the threshold. This can happen if

a rack or other heavy material was placed on the hood.









ALARMS THAT DON'T STOP THE DISHWASHER (SHOWN ON THE USER INTERFACE AT REGULAR INTERVALS)

b1 Drain not efficient

Has the overflow been removed?

Is the water drain blocked?

Is the drain pump blocked?

Are the air trap and tank pressure switch clean?

Is there a constriction in the drain tube?

Is the pump breather pipe returning to the tank clogged or constricted?

Does the tank pressure switch work properly?

Is there a hole in the drain tube (only for versions with drain pump)?



b2 Overflow alarm

Is the water drain blocked?

Are the air trap and tank pressure switch clean?

Does the tank pressure switch work properly?

Is the load solenoid valve blocked? (see electrical wiring diagram - YV1 Filling solenoid valve)

Is the load solenoid valve relay stuck? (see electrical wiring diagram - RL5 relay of AP2 board)



C1 Boiler temperature rise too fast

Does the boiler level sensor work properly? The boiler could be empty.

Are no-original power resistances installed?



C2 Boiler temperature too high

Has the boiler temperature been changed (btC - increased above 90°C)?

Has the software alarm value been modified (bH,)?

Does the boiler level sensor work properly?

Boiler relay/relays sticked (see electrical wiring diagram - RL1/ RL2/ RL3 relays of AP2 board)?



C3 Tank temperature too high

Is the feed water above 60°C?

Has the software alarm value been modified (tHi)?

Is the rinse water temperature too high?

Is the tank relay stuck (see electrical wiring diagram - RL4 relay of AP2 board)?



C4 Tank temperature sensor out of order

Is the temperature sensor broken or disconnected (see electrical wiring diagram - ST1 Tank

probe)?

Is the temperature sensor connector correctly inserted?



C5 Tank temperature sensor out of order

Is the temperature sensor short-circuited (see electrical wiring diagram - ST1 Tank probe)?



C6 Boiler temperature sensor out of order

Is the temperature sensor broken or disconnected (see electrical wiring diagram - ST2 Boiler

probe)?

Is the temperature sensor connector correctly inserted?



C7 Boiler temperature sensor out of order

Is the temperature sensor short-circuited (see electrical wiring diagram - ST2 boiler probe)?



C10 Rinse temperature sensor out of order (only on machines with temperature sensor on the rinse circuit)

Is the temperature sensor broken or disconnected?

Is the temperature sensor connector correctly inserted?

C11 Rinse temperature sensor out of order (only on machines with temperature sensor on the rinse circuit)

Is the temperature sensor short-circuited?

C13 Rinse pump out of order (the water level of the boiler does not decrease)

Does the rinse pump work correctly?

Is there any bottleneck in the hose, that connect the air trap and the board sensor?



WARNING:

Alarms C2, C6 and C7 lock the boiler temperature control.

Alarms C3, C4 and C5 lock the tank temperature control.

In the case of alarms C6 and C7, the boiler waiting phase is not executed (the rinse may be performed

with cold water) and, during the initial warm-up and subsequent rinses ( btF > 0 ), the boiler heating

phase is not executed.

In the case of an open probe error ( C4, C6 e C10 ), the displayed temperature is 10°C

In the case of a shorted probe error ( C5,C7 e C11 ) , the displayed temperature is 99°C.



E1 Communication error

Is the connection between main board and control panel correct? Are the connectors correctly

connected?

Are connector contacts clean?

E2 Tank temperature low

Does the tank heating element work properly?

Are the connectors correctly connected?

Are the dishwasher feed voltage and current correct?

Is the relay RL4 (see electrical wiring diagram - RL4 relay of AP2 board) on the board disconnected

or faulty?

E3 Boiler temperature low

Does/do the boiler heating element/s work properly?

Are the connectors correctly connected?

Does the possible remote control switch connected to the heating element work correctly?

Is there power at the remote control switch input terminals?

Do boiler relays (see electrical wiring diagram - RL1/ RL2/ RL3 relays of AP2 board) work properly?



CAUTION: IF THERE IS A MALFUNCTION ON RELAY RL1 AND THE BOILER HEATING ELEMENTS

ARE FED BY MEANS OF A REMOTE CONTROL SWITCH, THE BOARD DOES NOT

HAVE TO BE REPLACED; JUST MOVE THE BOILER HEATING ELEMENT CONNECTOR TO

ONE OF THE TWO FREE POSITIONS ON THE BOARD.

CAUTION: WHEN ONE BRANCH OF THE HEATING ELEMENT DOES NOT WORK AND THE

OTHER TWO CONTINUE TO FUNCTION, ON REACHING THE SET TEMPERATURE VALUE,

ALARM 3 DISAPPEARS AND REAPPEARS IN THE SUBSEQUENT RINSE PHASE. THIS

ALSO OCCURS WHEN A PHASE IS MISSING.



Dado

test the steps and fix it. God bless you

Heating Element

If lights are flashing on the control panel, the heating element might have burned out. The heating element heats the water up to operating temperature. After a set amount of time if the temperature isn't reached a light on the control panel might start flashing. The heating element can be checked for continuity with an Ohm meter.


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Heating Element Assembly

If lights are flashing on the control panel, the heating element assembly might have burned out. The heating element assembly heats the water up to operating temperature. After a set amount of time if the temperature isn't reached a light on the control panel might start flashing. The heating element assembly can be checked for continuity with an Ohm meter.


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Help me find my model number

Check Fault Codes

If the display lights are flashing and there is an error code in the display window, check the wiring diagram and tech sheet in the dishwasher that will provide information on the fault.

Drain Pump

If lights are flashing on the control panel, the drain pump might not be working properly. For two-wire drain pump motors check them for continuity using an Ohm meter. If it's defective You'll need to replace it. Drain pumps are not repairable.


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Help me find my model number

Touchpad and Control Panel

If the lights are flashing on the display the entire touchpad and control panel assembly might be defective. If the display works but the dishwasher functions are all out of synch, or some of the buttons don't respond properly the entire touchpad and control panel might need to be replaced.


Enter your model number to see parts for your dishwasher.
Help me find my model number

Touchpad

If the display lights are flickering for no reason, the touchpad might need to be replaced. Sometimes when the touchpad is defective the display lights are flashing randomly.

follow this steps and fix it. God bless you

Heating Element

If lights are flashing on the control panel, the heating element might have burned out. The heating element heats the water up to operating temperature. After a set amount of time if the temperature isn't reached a light on the control panel might start flashing. The heating element can be checked for continuity with an Ohm meter.


Enter your model number to see parts for your dishwasher.
Help me find my model number

Heating Element Assembly

If lights are flashing on the control panel, the heating element assembly might have burned out. The heating element assembly heats the water up to operating temperature. After a set amount of time if the temperature isn't reached a light on the control panel might start flashing. The heating element assembly can be checked for continuity with an Ohm meter.


Enter your model number to see parts for your dishwasher.
Help me find my model number

Check Fault Codes

If the display lights are flashing and there is an error code in the display window, check the wiring diagram and tech sheet in the dishwasher that will provide information on the fault.

Drain Pump

If lights are flashing on the control panel, the drain pump might not be working properly. For two-wire drain pump motors check them for continuity using an Ohm meter. If it's defective You'll need to replace it. Drain pumps are not repairable.


Enter your model number to see parts for your dishwasher.
Help me find my model number

Touchpad and Control Panel

If the lights are flashing on the display the entire touchpad and control panel assembly might be defective. If the display works but the dishwasher functions are all out of synch, or some of the buttons don't respond properly the entire touchpad and control panel might need to be replaced.


Enter your model number to see parts for your dishwasher.
Help me find my model number

Touchpad

If the display lights are flickering for no reason, the touchpad might need to be replaced. Sometimes when the touchpad is defective the display lights are flashing

Try these.
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P1114Intake Air Temperature 2 Circuit Low Input
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P1151Lack of Upstream Heated Oxygen Sensor Switch - Sensor Indicates Lean - Bank No. 2
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P1169FRP Sensor In Range But High
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P1181Fuel Delivery System High
P1183EOT Sensor Circuit Malfunction
P1184EOT Sensor Out Of Range
P1220Series Throttle Control fault
P1224Throttle Position Sensor B out of Self-Test Range
P1229Supercharger Intercooler Pump Not Working
P1230Open Power to Fuel Pump circuit
P1231High Speed Fuel Pump Relay activated
P1232Low Speed Fuel Pump Primary circuit failure
P1233Fuel Pump Driver Module off-line
P1234Fuel Pump Driver Module off-line
P1235Fuel Pump Control out of range
P1236Fuel Pump Control out of range
P1237Fuel Pump Secondary circuit fault
P1238Fuel Pump Secondary circuit fault
P1244Generator Load Input Low
P1245Generator Load Input High
P1246Generator Load Input Failed
P1250Lack of Power to FPRC Solenoid
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P1309Misfire Detection Monitor not enabled
P1336CKP and/or CMP Input Signal to PCM Concerns
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P1352Ignition Coil A - Primary circuit fault
P1353Ignition Coil B - Primary circuit fault
P1354Ignition Coil C - Primary circuit fault
P1355Ignition Coil D - Primary circuit fault
P1356Loss of Ignition Diagnostic Module Input to PCM
P1358Ignition Diagnostic Monitor Signal out of Self-Test Range
P1359Spark Output circuit fault
P1364Ignition Coil Primary circuit fault
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P1383Variable Cam Timing Over-retarded (Bank 1)
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P1408EGR Flow out of Self-Test Range
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see this causes and fix it. God bless you
Drain Pump If lights are flashing on the control panel, the drain pump might not be working properly. For two-wire drain pump motors check them for continuity using an Ohm meter. If it's defective YOU'LL need to replace it. Drain pumps are not repairable.
Heating Element If lights are flashing on the control panel, the heating element might have burned out. The heating element heats the water up to operating temperature. After a set amount of time if the temperature isn't reached a light on the control panel might start flashing. The heating element can be checked for continuity with an Ohm meter.

Heating Element Assembly If lights are flashing on the control panel, the heating element assembly might have burned out. The heating element assembly heats the water up to operating temperature. After a set amount of time if the temperature isn't reached a light on the control panel might start flashing. The heating element assembly can be checked for continuity with an Ohm meter.

Touchpad and Control Panel If the lights are flashing on the display the entire touchpad and control panel assembly might be defective. If the display works but the dishwasher functions are all out of synch, or some of the buttons don't respond properly the entire touchpad and control panel might need to be replaced
Touchpad If the display lights are flickering for no reason, the touchpad might need to be replaced. Sometimes when the touchpad is defective the display lights are flashing randomly.

Check Fault Codes If the display lights are flashing and there is an error code in the display window, check the Error Codes guide on our website to determine which component has failed or is failing

see this causes and fix it. God bless you
Drain Pump If lights are flashing on the control panel, the drain pump might not be working properly. For two-wire drain pump motors check them for continuity using an Ohm meter. If it's defective YOU'LL need to replace it. Drain pumps are not repairable.

Heating Element If lights are flashing on the control panel, the heating element might have burned out. The heating element heats the water up to operating temperature. After a set amount of time if the temperature isn't reached a light on the control panel might start flashing. The heating element can be checked for continuity with an Ohm meter.

Heating Element Assembly If lights are flashing on the control panel, the heating element assembly might have burned out. The heating element assembly heats the water up to operating temperature. After a set amount of time if the temperature isn't reached a light on the control panel might start flashing. The heating element assembly can be checked for continuity with an Ohm meter.

Touchpad and Control Panel If the lights are flashing on the display the entire touchpad and control panel assembly might be defective. If the display works but the dishwasher functions are all out of synch, or some of the buttons don't respond properly the entire touchpad and control panel might need to be replaced.

Touchpad If the display lights are flickering for no reason, the touchpad might need to be replaced. Sometimes when the touchpad is defective the display lights are flashing randomly.

Check Fault Codes If the display lights are flashing and there is an error code in the display window, check the Error Codes guide on our website to determine which component has failed or is failing

your o2 sensor is bad. vsc will go on for any small DTC displayed on the MIL (cel)

P0037 LEXUS P0037 LEXUS - Oxygen Sensor Heater Control Circuit Low Bank 1 Sensor 2 Symptoms - Engine Light ON (or Service Engine Soon Warning Light)
Possible causes - Heated Oxygen Sensor (H2OS) Bank 1 Sensor 2 circuit open shorted to ground
- Heated Oxygen Sensor (H2OS) Bank 1 Sensor 2 circuit poor electrical connection
- Faulty Heated Oxygen Sensor (H2OS) Bank 1 Sensor 2 circuit
- Heated Oxygen Sensor (H2OS) Bank 1 Sensor 2 circuit fuse
- Faulty Engine Control Module (ECM) When is the code detected? The P0037 is set when the ECM detects an excessively low voltage through the heated oxygen sensor heater circuit P0037 LEXUS Description Oxygen Sensors (O2S) or Heated Oxygen Sensors (HO2S) need to reach a minimum operating temperature of 750 degrees F to produce an accurate voltage signal. The faster the heated oxygen sensor reaches that temperature the faster the sensor will start sending an accurate signal to the Engine Control Module (ECM).

In order to achieve the require temperature, a heater element is included inside the heated oxygen sensor. The ECM controls the heated oxygen sensor heater element based on signals from the engine coolant temperature and engine load. The ECMcontrols the heater element circuit by allowing current flow to ground.

The ECM monitors the voltage signal received through the heater element circuit and determines the state of the circuit by comparing the voltage detected with the factory specifications.

Hello, welcome to Fixya. Actually an error code "1" refers ONLY to a heating error. I'm not sure what you've based your info on, but "1" being displayed has nothibg to do with a water fill/level issue what-so-ever with any Bosch dishwashers. Here's how to perform a test or diagnostic for the "shu43" series Bosch to determine once and for all the problem you're having though. Make sure the power button is in the off position ( open & closing of the door will activate the "auto shut off" ). Once certain it is "off" press and hold both the regular button and rinse & hold button, then turn the unit "on" while continuing to depress those 2 buttons. Initially, control module version # will display ( i.e. "20" = version "0" without jumper...not important for this ). When the buttons are now released, the lights above them will flash. To start testing, press both the "regular wash" and "rinse & hold" a second time. Let the test follow through. When testing has ended, the display will show an error using codes as follows. "0" = no error. "1" = aqua sensor fault. "2" = heating fault. "4" = filling fault. and finally, "8" = NTC ( temperature sensor ) fault. If it where related to a fill/level error you would see the letter "F" during washing but the # 4 in diagnostic's. Similarly for a heating fault, the diagnostic will identify a #2 but the "1" appears during normal washing. Let me know if I can assist you further. Hope you found this helpful and if so please allow for a positive rating. If there is anything not clear let me know and I'll try to expand on the info I posted. Good luck. Macmarkus :)