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Your check engine light is on, and you got the code P0171 or P0174, "system too lean." That means your vehicle's engine does not have enough fuel for the amount of air it is getting; a lean mixture. An engine running lean can have a negative impact on performance, and can cause damage! In this video, Andy walks you through the steps of diagnosing and resolving the different problems that could cause this code, from the simple: a loose intake fitting or hose; to the more complex: a faulty fuel injector or oxygen sensor.
Find your make and model in our playlists to see if we have a video on intakes, fuel injectors, or oxygen sensors for your specific vehicle:
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⚠ DISCLAIMER:
While 1A Auto strives to make the information provided in this video as accurate as possible, it makes no claims, promises, or guarantees about the accuracy, completeness or applicability of the content. No information contained in this video shall create any expressed or implied warranty or guarantee of any particular result. All do-it-yourself projects entail some risk. It is the sole responsibility of the viewer to assume this risk. 1A Auto is not responsible or liable for any loss damage (including, but not limited to, actual, consequential, or punitive), liability, claim, or any other injury or cause related to or resulting from any information posted in this video.
