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99 f-250 v-10 service engine light on codes p0171,p0174 system to lean, any ideas

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O2 sensor faulty.

Posted on Jul 11, 2009

  • Philip Long
    Philip Long Jul 11, 2009

    O2 sensor faulty.

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Posted on Jan 02, 2017

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I have the following codes coming up for my 2003 jeep liberty. P1282, p0171, p0174, p0306


where did you get codes? whomever told you have told the meaning.
use google and search Jeep codes.

P1282 JEEP - Fuel Pump Relay Control Circuit Condition
P0171 JEEP - Fuel System 1/1 Lean
P0174 JEEP - Fuel System 2/1 Lean
P0306 JEEP - Cylinder 6 Misfire Fault Detected


OBDII Codes Engine Light Repair and Diagnostic Information AutoCodes com

Jul 21, 2018 | Jeep Cars & Trucks

1 Answer

Keep getting P0171 and P0174 codes for my 02 Explorer. Changed the PCV valve because Auto zone said so but still my light won't go off. What do you think is likely the problem?


P0171 & P0174 Lean condition . A number of thing's could cause this , weak fuel pump , plugged fuel filter , vacuum leaks , dirty fuel injectors . Taking your vehicle to a qualified repair shop would be your best bet .
System Too Lean P0171 P0174 Vacuum Leak Quick Test Ford 5 4
Lean Condition Diagnosis on Ford p0171 P0174

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Nov 29, 2017 | Cars & Trucks

1 Answer

Im getting P0171 code- lean .


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    Feb 11, 2014 - 'Check Engine' code P0171 System Too Lean - Is it safe to drive? ... My question is: is it okay to drive my car while it shows these codes? ... This will cause you to get increasingly worse fuel mileage. ... I am going to defer to your expertise, but I just want to ask if you've considered that lean-running engines ...

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    Definition of error code P0171 and P0174 - System too Lean (Bank 1 and Bank 2). ...Before we get into the main causes of P0171, let's explore why this code matters. ..."Lean" running cars and light trucks are highly polluting vehicles. Most of ...

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Jan 27, 2016 | Cars & Trucks

1 Answer

Engine light on


P0171 ; Fuel Trim System Lean (Bank 1)
P0174; Fuel Trim too Lean (Bank 2)
fuel trim is system to modify injector pulse if system go lean it will go rich when the system is too much lean and is max.rich it code
look for 02 sensor bank 1 and 2 data
hope it helps

Mar 31, 2014 | 2003 Chevrolet Malibu

2 Answers

I have a 2001 Jimmy with "Service Engine Soon"


P0171 System too lean bank 1
P0174 System too lean bank 2

Last time you changed your fuel filter?
Look for any vacuum leaks.

Sep 05, 2011 | 2001 GMC Jimmy

1 Answer

P0171 and P0174 Left and Right bank lean trouble codes pulled from ECU. Check Engine Light illuminated.


P0171 = system too lean bank 1
P0174 = system too lean bank 2

The fuel/air mixture is too lean for the entire engine. The fuel pump pressure could be too low. The fuel pump pressure regulator could be at fault. There could be an air leak downstream of the MAF sensor. MAF sensor (hot wire type) could be dirty. Check for intake manifold vacuum leaks. The engine coolant temp sensor and/or the intake air temp sensor could be faulty (stuck at full hot mode).

Feb 26, 2011 | 2008 Hyundai Entourage

1 Answer

What is the code P1451 solution? Runs great, codes P1451, P0171 and P0174 are coming up and the engine light is on. Car needs to get inspected but codes need to be fixed.


P0171 - System too Lean (Bank 1)
P0174 - System too Lean (Bank 2)
P1451 - EVAP Control System Canister Vent Solenoid Circuit Malfunction
I'm afraid I don't have enough info to tell you how to fix the P1451 but I'm certain it's the cause of the other two codes.

Jun 08, 2010 | 2000 Ford Taurus

1 Answer

Ford windstar check engine light comes on after stopping when starting to get moving again shows p0171 & p0174 codes why??


P0171 indicates a lean condition. The most common cause of this is a defective mass air flow sensor. Also check if any vacuum leaks. P0174 OBD-II Trouble Code


Technical Description

System Too Lean (Bank 2)


What does that mean?

Basically this means that an oxygen sensor in bank 2 detected a lean condition (too much oxygen in the exhaust.

Note: This DTC is very similar to P0171, and in fact your vehicle may show both codes at the same time.

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Thanks.


Dec 17, 2009 | 2002 Ford Windstar Cargo

1 Answer

2005 hyundai santa fe check engine light on... p0171 and p0174 any ideas to repair it.


Definition of P0171 is Applied to All Manufacturers Powertrain: System Too Lean Bank 1
Definition of P0174 is Applied to All Manufacturers Powertrain: System Too Lean Bank 2

Nov 03, 2009 | 2005 Hyundai Santa Fe

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