FAULTNEST FAULT CODE DATABASE
Find the fault code.
Understand the problem.
Search error and diagnostic codes across cars, household appliances, boilers, heating systems, fire equipment and more.
Search a fault or error code
Enter the code shown on the display, diagnostic reader or control panel. Adding the manufacturer gives better results.
The same code can mean different things on different manufacturers and equipment.
BROWSE FAULT CODES
Choose the equipment type
Start with the type of equipment, then narrow the results by manufacturer and code.
Cars & OBD
OBD-II diagnostic trouble codes, warning codes and vehicle system faults.
Browse fault codes →Washing Machines
Manufacturer error codes for washing, draining, heating and motor faults.
Browse fault codes →Dishwashers
Drainage, water inlet, heating, sensor and pump error codes.
Browse fault codes →Boilers & Heating
Boiler lockouts, pressure faults, ignition errors and heating system codes.
Browse fault codes →Ovens & Cookers
Temperature sensor, door lock, control board and heating error codes.
Browse fault codes →Fridges & Freezers
Cooling, temperature, fan, defrost and sensor fault codes.
Browse fault codes →Fire & Security
Control panel messages, loop faults, device errors and system warnings.
Browse fault codes →Electronics & Equipment
Fault and error codes from everyday electronic and powered equipment.
Browse fault codes →HOW IT WORKS
From code to useful answer
Fault codes are starting points. The exact meaning can depend on the manufacturer, product range and model.
Enter the code
Search the exact code shown by the vehicle, appliance or equipment.
Match the equipment
Choose the correct manufacturer, equipment type or model where required.
Understand the fault
See the meaning, likely causes, symptoms, checks and related FaultNest guides.
A fault code is not always a complete diagnosis
Codes identify the system or condition detected by the equipment. They do not always prove which component has failed. Use the code together with symptoms, manufacturer information and safe diagnostic checks.
FAULTNEST DATABASE
One place for faults across different equipment
The database can grow alongside FaultNest's existing troubleshooting guides, linking error codes to practical fault-finding information.