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Checking for errors in the Opel Astra G (G) car in my case, errors P0230 P0300 P0105 To check for errors: - Insert the key into the ignition - Press the gas pedal and the brake pedal - Turn on the ignition (do not start the engine!) - Watch the engine warning light If there are errors, the light will display an error code. The code consists of 4 digits. Each number is displayed separately. If the light blinks 1 time, this is 1, twice - 2, and so on, 10 times means zero. There is a pause between the digits. To complete the diagnostics, release the pedals. Link to the full list of errors http://www.autopeople.ru/forum/opel/a...