Code P0171 - System Too Lean. This code indicates an oxygen sensor has detected too much oxygen in the exhaust. Part of the P01xx - `Fuel and Air Metering` family of codes.

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2001 Hyundai Sonata 2.4L hiccups badly after startup

I own a 01 Hyundai Sonata 2.4L and the error codes I get after an ODB check is p0171. When i first start it up it's like it loses power, constantly hiccuping. So i have to press on the gas to keep it ...
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'Check Engine' code P0171 System Too Lean - Is it safe to drive?

My 2003 Toyota Corolla's Check Engine Light came on. I read the codes using an OBD code reader and got P0171 - System Too Lean (Bank 1) and P0133 - 02 Circuit Slow Response (Bank 1, Sensor 1). The ...