P0170: what does this code mean?

Fuel trim out of limits (bank 1)

Parts to check, to be confirmed by diagnosis

1. Air intake hoseSearch for my vehicle
2. Mass air flow sensorSearch for my vehicle
3. Fuel injectorSearch for my vehicle
4. Oxygen sensorSearch for my vehicle

Bank 1: the side of the engine with cylinder 1. An inline engine has only one bank.

A code points to a circuit or a function, not a part number: confirm by diagnosis before ordering.

Nearby codes:P0171

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