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02-02-2023, 04:11 PM
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#1 |
 Drives: 2004 toyota yaris t3 3 door Join Date: Feb 2023
Location: Bexhill on sea UK
Posts: 3
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P0171 fault code
Just had a p0171 fault code show couple days ago.
Anybody got any ideas what it might be. |
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02-02-2023, 04:29 PM
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#2 |
 
Drives: 06 Polar White 5dr, 13 Soul 4u Join Date: Oct 2008
Location: Georgetown, Ontario, Canada
Posts: 5,740
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Your fuel mix is running lean, too much air. Top thing to look at in any google result is the MAF sensor needing to be cleaned.
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02-05-2023, 09:22 AM
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#3 |
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Drives: 2010 yaris 3 door hatch Join Date: Jun 2013
Location: Sheboygan Falls, Wi.
Posts: 506
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Maybe the duct between the Maf and the throttle body is torn.
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02-05-2023, 12:05 PM
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#4 |
Drives: 2009 Base Hatch 2 Dr Auto Join Date: Dec 2008
Location: nj
Posts: 4,790
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How do you fix code P0171?
You can usually fix P0171 using the following steps: Replace the fuel pump or fuel filter. Change the fuel pressure regulator. Replace the powertrain control module. Change one or more injectors. Replace one or more oxygen sensors. Change the mass airflow sensor. Repair vacuum leak
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Synthetic Oil: Its All In Your Head |
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02-05-2023, 12:05 PM
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#5 |
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Drives: 2009 Base Hatch 2 Dr Auto Join Date: Dec 2008
Location: nj
Posts: 4,790
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I’m guessing vacuum leak
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02-05-2023, 12:06 PM
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#6 |
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Drives: 2009 Base Hatch 2 Dr Auto Join Date: Dec 2008
Location: nj
Posts: 4,790
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code?
Is P0171 serious? Issue Severity: MODERATE– Extended driving with this code can cause internal engine damage. Repair Urgency: Get this code fixed as soon as possible to avoid damage to spark plugs, pistons, and catalytic converters. Diagnosis: It is important to complete the entire diagnostic process when diagnosing P0171.
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02-05-2023, 01:05 PM
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#7 | |
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Drives: 2004 toyota yaris t3 3 door Join Date: Feb 2023
Location: Bexhill on sea UK
Posts: 3
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Quote:
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02-05-2023, 01:06 PM
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#8 | |
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Drives: 2004 toyota yaris t3 3 door Join Date: Feb 2023
Location: Bexhill on sea UK
Posts: 3
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Quote:
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02-05-2023, 04:49 PM
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#9 | |
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Drives: 2009 Base Hatch 2 Dr Auto Join Date: Dec 2008
Location: nj
Posts: 4,790
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Quote:
I’m guessing you have a vacuum leak. Have you consulted Scotty on YouTube? He describes a procedure for locating vacuum leaks. I think it involves spraying something like WD-40 on it around the vacuum lines of the engine and listening for RPM increase. If it increases when you spray It someplace there’s your leak
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Synthetic Oil: Its All In Your Head |
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02-06-2023, 05:59 AM
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#10 |
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Drives: 2007 Yaris Sedan Join Date: Apr 2009
Location: CT
Posts: 271
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The filter maybe part of the fuel assembly. In the top of the fuel tank.
My 2007 has the filter inside the fuel pickup assembly on the top of the fuel tank. |
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02-06-2023, 10:34 AM
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#11 |
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Drives: 2009 Base Hatch 2 Dr Auto Join Date: Dec 2008
Location: nj
Posts: 4,790
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Sometimes the fuel filter is integral to the fuel pump
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