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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 ...
In this video, we explain car engine sensors, detailing their functions, operations, locations, and effects of malfunctions.
When YouTuber Four Eyes bolted an air-to-air intercooler onto his supercharged 2007 Ford Mustang GT, the dyno spat out a ...