Question about 1997 Chrysler Concorde

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My check engine light came on a I took it to autozone, and gave the code PO174 which means left front fuel system too lean. Also when sitting at a red light the car seems to shake. What steps should I take to fix this?

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  • Jovaun Hoo Jul 19, 2009

    I just found out that it didnt have a air filter, I bought the car a couple of weeks ago, and i have driven almost 200 milies without one.

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Check the air censors one could be bad. sorta looks like a spark plug with 2 wires in it. maybe 4 of them.....

Posted on Jul 18, 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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Check engine light is on and when tested shows codes PO174 and PO171


The P0171 means System too Lean (Bank 1) and P0174 means System too Lean (Bank 2).
_______________
FGTech Galletto 2-Master

Nov 08, 2012 | 2004 Suzuki Verona

1 Answer

Chrysler Engine Codes PO174


All OBD 2 (1996- present) engine codes with the prefix of P. are the same regardless of manufacturer. This particular code indicates that the system is to lean on bank two. Meaning either the passenger side of the engine or back side on front wheel drive cars is receiving to much air or not enough fuel. This is determined by the oxygen sensor's in the exhaust on that side. You may want to look for a vacuum line which has fallen off. Or if the car is making a ticking noise from the exhaust on that side you may have a exhaust leak allowing air in to the system. Another less likely scenario is the fuel injectors on that side have a weak pulse or to quick of a pulse. Meaning they are turning on and off to quickly.

Aug 29, 2012 | 1999 Dodge Intrepid

1 Answer

Please tell me what this means,,, po171 band 1 system too lean and po174 band 2 system too lean, thank you, jill


PO 171--is an O2 Sensor Code for a Lean Condition
on Bank 1 (right side exhaust)

PO 174 -- is an O2 Sensor Codes for a Lean Condition
on Bank 2 (left side exhaust)

You gave us no vehicle
You gave us no drivability issues or
vehicle history,nothing

If the O2's have 100,000 miles on them,change the (2)
closest to the engine. They are most likely worn out
& the switching times are too slow to control injector
pulse width & thus set a MIL Lamp (OBD2 Fault ) on
your dash

You can learn a lot on the internet if you put OBD2 in your
Search Engine (Internet Explorer,etc)

Jul 15, 2011 | Lincoln Town Car Cars & Trucks

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Check engine light on; engine codes P0171 and P0174


p0171 is lean exhaust bank one ( passenger side) and p0174 is lean exhaust bank 2 ( drivers side). First we need to look for vacuum leaks, low fuel pressure, Intake air leaks after the mass air flow sensor, pvc system. Because you have both sides lean I would start looking at these spots.

May 23, 2011 | 1998 Ford F150 Regular Cab

1 Answer

Error code 01710 car stalls and will not start for a few minutes


Hyundai has P0171 and P0170 codes. What does this mean??...and took it to Autozone to run a check engine light test on it. The codes that came back were P0171 and P0170? The possible problems were system too lean, fuel syst fault, ignition syt fault, en...


p0171 and p0174 both banks lean

Feb 27, 2011 | 2001 Hyundai Santa Fe

2 Answers

Po174


A P0174 lean code for bank 2 is the cylinder bank on the LEFT (driver) side of the engine on Ford vehicles with a transverse-mounted V6 engine and front-wheel drive. This code is not set on four cylinder engines (no bank 2).
WHAT A LEAN CODE MEANS
A lean fuel condition may exist if the engine is sucking in too much air and/or the fuel system is not delivering enough fuel. If bad enough, a lean fuel condition may cause lean misfire, a rough idle, hesitation or stumble when accelerating, and/or poor engine performance . Unmetered air can enter the engine through a vacuum leak, a dirty airflow sensor that is not reading airflow accurately, an EGR valve is not closing and is leaking exhaust into the intake manifold, an EGR valve that is allowing too much flow (because the EGR differential pressure sensor that monitors EGR flow is faulty and is under-reporting EGR flow).
If the problem is not enough fuel, the underling cause may be a weak fuel pump, restricted fuel filter, leaky fuel pressure regulator or dirty fuel injectors.

Dec 24, 2010 | Ford Explorer Cars & Trucks

1 Answer

Check engine error code PO174


A PO174 LEAN CODE FOR BANK 2 IS THE CYLINDER BANK ON THE LEFT SIDE OF THE ENGINE
(THE CYLINDERS FACING THE FRONT OF YOUR CAR)
A LEAN FUEL CONDITION COULD EXIST IF THE ENGINE IS GETING
TO MUCH AIR AND/OR NOT GETING ENOUGH FUEL
THIS CAN CAUSE MISFIRE, ROUGH IDLE, AND HESITATION WHEN ACCELERATING
THIS COULD BE
A VACUME LEAK, A DIRTY AIRFLOW SENSOR,
A EGR VALVE NOT CLOSING LEAKING EXHAUST INTO THE INTAKE MANIFOLD
IF ITS NOT GETING ENOUGH FUEL THE FUEL PUMP COULD BE BAD, THE AIR FILTER COULD BE DIRTY
OR IT COULD BE DIRTY INJECTORS
ID TRY FUEL INJECTOR CLEANER AND A NEW AIR FILTER FIRST
THEN TRY CLEANING YOUR EGR VALVE. COPY THIS LINK TO YOUR BROWSER FOR
STEP BY STEP INSTRUCTIONS TO DO THIS.
www.ehow.com/how_4809842_clean-ford-taurus-egr-valve.html

IF THIS DONT DO IT I WOULD TAKE IT TO A MECHANIC TO HAVE THE OTHER THINGS CHECKED
HOPE THIS HELPS.

Dec 21, 2010 | 2001 Ford Taurus

1 Answer

My service engine soon light came on! the trouble code displays PO174 System Too Lean Bank-2 what can cause this code??? I got a few answers but none of them seem quite right. Any suggestions????


Lean system means not enough fuel, Or to much air. Vacume leaks cause to much air, Usaly that code pops up the 02 sensors are failed and need replaced.......

Jun 13, 2010 | 2000 GMC Yukon Denali

4 Answers

Check Engine light is on my 1997 F150 with a small V-8. The tester returns codes P0171, P0172, P0174 and P0175. What does all this mean?


those codes are for lean engine condition look for vac leaks at the back of engine to the pcv valve could hear hissing noise with engine running also check egr valve to be stuck open also when was last fuel filter changed? hope this helps .

Sep 16, 2009 | 1997 Ford F150 Regular Cab

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