Find the meaning. Know your next step.
A warning on the display? Look up your code to understand what it means and what to do next.
Understand the warning
P0171 means the engine control system has detected a lean condition on Bank 1. An air leak can be responsible, but the code does not identify a failed oxygen sensor or a specific replacement part.
Read P0171 guide
An LG washer LE code means the drum is not turning as it should. An overloaded load, an obstruction or a temporary motor-related problem can be involved. Check the load and your model’s instructions before assuming the motor has failed.
Read LE guide
P0420 means the catalyst system on Bank 1 is performing below its accepted efficiency threshold. The result needs diagnosis: it is not, by itself, an instruction to replace an oxygen sensor or catalytic converter.
Read P0420 guide
An LG washer OE error means the machine cannot drain its wash water. A restricted drain hose or clogged pump filter can cause it; the code alone does not prove that the pump needs replacing.
Read OE guide
P0300 reports a random misfire. Ford’s diagnostic reference describes multiple cylinders misfiring or a misfire that the control module cannot assign to one cylinder.
Read P0300 guide
Bosch E15 means the leakage protection system has activated after water was detected in the dishwasher base. Close the water supply and contact Bosch support.
Read E15 guide
A Bosch dishwasher E24 error means it is not draining properly because of a blockage. The checks depend on the drain connection, hose route and pump-cover design.
Read E24 guide
A Bosch dishwasher E25 error code points to a blocked drain pump or a cover that is loose or missing. Check those areas using the cleaning instructions for your model.
Read E25 guideStart with the brand and the full message on the display. Each guide identifies the appliances or vehicles it covers, so you can check the match before following any steps.
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