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What does a po171 code mean?

Anonymous

∙ 15y ago

Updated: 9/9/2025

A P0171 code indicates that the engine control module (ECM) has detected a lean fuel condition in Bank 1 of the engine, meaning there is too much air or not enough fuel in the air-fuel mixture. This can be caused by issues such as a vacuum leak, a malfunctioning mass air flow (MAF) sensor, clogged fuel injectors, or a failing fuel pump. Addressing the underlying cause is essential to ensure optimal engine performance and prevent potential damage.

AnswerBot

∙ 1d ago

What else can I help you with?

What does po171 code mean on 1999 Ford contour 4-cylinder?

Code P0171 means System to lean (bank 1)

What is diagnostic code P0171 mean for a 2000 Chevy Malibu?

po171--- system to lean (bank # 1)

What is the trouble code for a bad fuel pump?

code po171

What does the check engine code PO171 mean?

P0171 System too Lean (Bank 1)

What does code po171 mean for 2001 grand am?

P0171 = System too lean (Bank 1) Look for a vacuum leak before you buy any parts.

Code PO171 on 1999 Mazda 626?

Trouble code P0171 means:System too lean (bank 1)

What does code po171 mean on a zx2?

Fuel mixture is too lean. Could be anything from a vacuum leak, dirty MAF sensor, bad O2 sensor, etc...

2002 subaru impresa is reading code po171 how do you FIX it thanks mar?

burn the car

Po171 trouble code for 2007 Chevy Equinox?

Trouble code P0171 Means: System too lean (bank 1)

What does OBD2 code po171 mean for sunfire?

Bank 1 system to lean. I would suspect a vacuum leak. Check under the hood for a disconnected or cracked vacuum line.

What about a 2003 Pontiac vibe with code po171?

first try cleaning your mass air flow sensor.

How do you fix P1504 code on99 ford f150?

2000 ford lightning. P1540,po171.po174

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