Q: My wife has a 2018 Toyota Sienna with 133,000 miles on it. For a few years now, we’ve noticed a gasoline smell in the cabin. We’ve asked a Toyota dealer twice, and two auto repair shops on three ...
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How to fix P0171 code

P0171 is a diagnostic trouble code that means the engine’s air-to-fuel mixture on Bank 1 is too lean, with too much air relative to the amount of fuel being delivered. The most common cause is a ...