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Built from the manufacturer's pages, and nothing else

Most error-code sites copy each other. This one copies the only source that actually knows: the manufacturer's own support documentation.

The rules every page follows

  1. One page per code, built from that brand's official support page or manual — linked and dated in the provenance box at the foot of the page.
  2. The checks appear in the manufacturer's order. We restate them in plain words; we do not add steps of our own.
  3. Where the manufacturer says "request service", the page says stop. We never publish repair steps for gas, refrigerant or mains electrical work.
  4. Where the same code means different things on different models or brands, the page says so, instead of pretending there is one answer.
  5. Parts listed are the parts the fault involves, with typical market prices — they are context for a repair quote, not a shopping list we profit from hiding.

Sources in use