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Po171 po174 - 2003 Jeep Liberty

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Posted on Jan 02, 2017

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SOURCE: 2006 jeep wrangler code po174

Check wiring to sensors.

Posted on Jul 13, 2009

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1 Answer

Po171 po174 code


Lean bank 1 and bank 2 , and throttle actuator system fault. Check reason for lean codes 1st, vacuum leak(s), air inlet boot and hoses, or low fuel pressure / clogged filter. Repair as needed then clear codes and recheck .

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2003 Ford Expedition check engine codes PO171 & PO174


You should be replacing all upstream oxygen sensors,
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Generic code PO171 system 2 lean bank 1 generic


This can be caused by a faulty mass air flow sensor

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2006 jeep wrangler code po174


Check wiring to sensors.

Jul 13, 2009 | 2006 Jeep Wrangler

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Code po171 7 po174


your computer is reporting bank 1 and 2 too lean, usually caused by the mass air flow (MAF) sensor, you can usually clean this sensor and reset the light. Clean it with electric cleaner or brake cleaner, make sure it is dry before reinstalling, also take care not to damage it. Hope this helps, let me know

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1 Answer

1996 ranger 4.0 codes po171 and po174 come up on the screen


Check for vacuum leaks, especially the intake manifold gaskets. If those are o.k., clean the Mass air flow sensor.

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1 Answer

1995 Windstar OBD II showing codes PO340, PO171, and PO174


Hello;
With those codes, the first place I would check is the fuel pressure. Also check the fuel filter and replace it if you haven't already. Then clear codes and recheck. Even if your fuel pressure is with in range it still may not push enough fuel to operate your vehicle.

Jan 15, 2009 | 1995 Ford Windstar

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