Engine Code P0171 Mean?

Answer

Engine code P0171 means that an oxygen sensor in bank 1 is receiving too much oxygen in the exhaust. The reason the code is triggered is because the downstream of the o2 sensor is showing a reading of an imbalanced air to fuel ratio. This issue usually does not cause any problems with driving but you could experience a lack of power, detonation, rough idle, and hesitation or a feeling of surging upon acceleration. Its a good idea to take the car to the mechanic to have it checked out and maybe obtain a tune up.
Reference:
Q&A Related to "Engine Code P0171 Mean?"
1. Attach the scan tool and start the engine. Allow the engine to run to operating temperature. With the engine running, visually inspect the engine for obvious vacuum leaks. Listen
http://www.ehow.com/how_7148144_troubleshoot-p0171...
Trouble code P0171 means: Fuel System Too Lean - Bank 1.
http://wiki.answers.com/Q/What_is_the_fix_for_engi...
Engine code P0171 means that an oxygen sensor in bank 1 detected a lean
http://www.chacha.com/question/what-does-the-engin...
What does that mean? Basically this means that an oxygen sensor in bank 1 detected a lean condition (too much oxygen in the exhaust). On V6/V8/V10 engines, Bank 1 is the side of the
http://www.fixya.com/cars/t7175398-engine_code_p01...
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