I have a 2000 Toyota Avalon XLS... I was told if I replace the o2 sensors I have to get the car flashed... is this true?

Asked by Mar 29, 2017 at 06:34 PM about the 2000 Toyota Avalon XLS

Question type: Maintenance & Repair

1 Answer

725

Not really. If it is stock and use same parts, no. At most an ECU reset. If you have a custom setup... well... kinda yes.

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