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OEM VERIFIED BENCH
OFFICIAL FAULT CODEE144
Bosch
Bosch // OFFICIAL DIAGNOSTIC BENCH

Bosch E144

OvenElectronic Control Board (PCB) & Bus Communications
Integrated luxury convection oven and induction cooktop with illuminated touch controls
Oven

Symptom / Description

FAULT

Plausibility check (Double ovens --> Oven cavity 1)

TELEMETRY // LIVESIG: FAULT_DETECTED

Root Cause

ROOT CAUSE

Parameter error in the control module

CIRCUIT // SUBSYSTEMLOGIC: ROOT_ISOLATED

Repair Instructions

UNLOCKED
1Disconnect 230V mains power for 3 minutes. 2. Inspect wire harness and edge connectors on control board for loose pins or oxidation. 3. Inspect mechanical linkages and sensors associated with subsystem. 4. Reset: Press and hold Start/Reset for 3 to 5 seconds until display shows 0:01. Turn dial to OFF, wait 15 seconds, turn back ON and run rinse cycle.
AI diagnostic workshop engine analyzing appliance circuit schematics and error telemetry in real time
AI WORKSHOP PROTOCOL ENGINE
Direct extraction from OEM factory manuals & wiring schematics

Field Actions

DISPATCH
Need Help? Call a Certified TechnicianWorldwide Bosch Parts Finder
Electrical & Safety Protocol

Always disconnect appliance from 230V/400V mains before opening panels. Use CAT III multimeter for circuit testing.

CALIBRATED BENCH PROTOCOL // CAT III 600V

Workshop Verification & Safety Checklist

WORKSHOP VERIFICATION PROTOCOLElectronic Control Board (PCB) & Bus CommunicationsOven / Microwave
2. Multimeter & Electrical Bench Tests (Ω)
MODE: OHMMETER (Ω)AUTO-RANGE
Precision digital multimeter probes measuring electrical resistance in Ohms on an appliance control board
CALIBRATED METROLOGY RESISTANCE BENCH (CAT III)
Nominal Resistance (Ω)
Low-voltage rails: +5.0V DC (Logic), +12.0V DC (Relays), +3.3V DC (MCU). Relay coils: 200Ω–450Ω.NOMINAL
0 Ω (SHORT)CALIBRATED BAND∞ OL (OPEN)
▲ NOMINAL OPERATING WINDOW
Target Component:PCB Power Supply Rails & DC Bus Filter Capacitors
Test Pins & Connections
PROBE (+)
PROBE (-)
Across SMPS output electrolytic capacitors on low-voltage side (test bench verification)
Tolerance & Diagnostic CriteriaDC rail ripple must remain <50mV. Direct continuity (0Ω) across DC bus rails indicates dead short.
1. Pre-Intervention Electrical Safety Protocols
  • !High-Voltage Safety Protocol: Disconnect 230V power before unplugging edge connectors or removing PCB.
  • !High Voltage DC Warning: Wait at least 5 minutes for SMPS and inverter filter capacitors (up to 380V DC) to discharge safely.
  • !Electrostatic Discharge (ESD): Ground yourself to the metal chassis or wear an antistatic wrist strap before touching circuit tracks.
3. Preliminary Mechanical & Visual Checks
  • Inspect PCB tracks with a magnifying glass for blown triacs, darkened copper tracks, or cold solder joints on power relays.
  • Check electrolytic capacitors for bulging tops or leaked electrolyte residue around pins.
  • Verify edge connector locking clips are intact and pins are free of vibration fretting corrosion.
Perform these diagnostic steps before triggering AI Deep Search or replacing boards.Certified Workshop Routine

Frequently Asked Questions: Bosch E144

FAQ TREE
What does error code E144 mean on a Bosch appliance?

Bosch error code E144 indicates: Plausibility check (Double ovens --> Oven cavity 1).

What is the root cause of Bosch error code E144?

The primary root cause for Bosch code E144 is: Parameter error in the control module.

How do I fix or resolve Bosch error code E144?

To resolve error code E144: 1. Disconnect 230V mains power for 3 minutes. 2. Inspect wire harness and edge connectors on control board for loose pins or oxidation. 3. Inspect mechanical linkages and sensors associated with subsystem. 4. Reset: Press and hold Start/Reset for 3 to 5 seconds until display shows 0:01. Turn dial to OFF, wait 15 seconds, turn back ON and run rinse cycle.

Is it safe to clear Bosch error code E144 by resetting power?

Resetting power (unplugging for 5–10 minutes) clears temporary memory errors. However, if Bosch code E144 persists, the physical component causing Parameter error in the control module must be inspected or replaced.

How do I test electrical resistance for Bosch code E144 using a multimeter?

Set a digital multimeter to ohms (Ω). Disconnect power and test PCB Power Supply Rails & DC Bus Filter Capacitors across Across SMPS output electrolytic capacitors on low-voltage side (test bench verification). Expected nominal reading is Low-voltage rails: +5.0V DC (Logic), +12.0V DC (Relays), +3.3V DC (MCU). Relay coils: 200Ω–450Ω.. Tolerance: DC rail ripple must remain <50mV. Direct continuity (0Ω) across DC bus rails indicates dead short..

What safety protocol must be followed before servicing Bosch code E144?

Standard electrical safety protocol: 1. Disconnect 230V mains power before opening panels. 2. Verify zero voltage at test points. 3. Allow hot water or heating elements to cool below 30°C before handling.

Community Verification

COMMUNITY

Did this solution resolve the issue?

SEMANTIC KNOWLEDGE GRAPH // BOSCH

Related Bosch Oven / Microwave Error Codes

Diagnostic Link Mesh14 OEM Cross-References

Cross-referenced diagnostic codes for technicians inspecting similar component subsystems.

E244Electronic Control Board (PCB) & Bus Communications
Plausibility check (Double ovens --> Oven cavity 2)
Inspect Protocol
E300Electronic Control Board (PCB) & Bus Communications
Unsatisfactory baking result or functions of the buttons do not correspond, appliance is in ...
Inspect Protocol
E303Electronic Control Board (PCB) & Bus Communications
The control board temperature is too high
Inspect Protocol
E305Electronic Control Board (PCB) & Bus Communications
Oven light flashes or the operating module is without function. The display flickers, and di...
Inspect Protocol
E309Electronic Control Board (PCB) & Bus Communications
Bosch E309: Operational cycle fault detected during Oven / Microwave program execution.
Inspect Protocol
E310Electronic Control Board (PCB) & Bus Communications
Failure in data in memory
Inspect Protocol
E312NTC Temperature Sensor & Thermistor
Bosch E312: NTC temperature sensor signal out of range (open or short circuit) in Oven / Mic...
Inspect Protocol
E344Electronic Control Board (PCB) & Bus Communications
Bosch E344: Operational cycle fault detected during Oven / Microwave program execution.
Inspect Protocol
E395Electronic Control Board (PCB) & Bus Communications
Bosch E395: Operational cycle fault detected during Oven / Microwave program execution.
Inspect Protocol
E396Electronic Control Board (PCB) & Bus Communications
Electronic control board EEPROM non-volatile memory read communication error.
Inspect Protocol
E397Electronic Control Board (PCB) & Bus Communications
Bosch E397: Operational cycle fault detected during Oven / Microwave program execution.
Inspect Protocol
E398Electronic Control Board (PCB) & Bus Communications
Bosch E398: Operational cycle fault detected during Oven / Microwave program execution.
Inspect Protocol
E399Electronic Control Board (PCB) & Bus Communications
Bosch E399: Operational cycle fault detected during Oven / Microwave program execution.
Inspect Protocol
E516NTC Temperature Sensor & Thermistor
Core temperature probe (meat thermometer) circuit fault detected on the oven.
Inspect Protocol
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