Question about 2004 Honda Accord

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Engine light on - Code is "System too lean bank one"

Seems to be running on empty when in idle or stop and go. Help me. Would 5-30 oil cause this.

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Air mixture sensor is bad. It is the sensor for the gas mixture is saying it is to lean. No oil will not cause this type of problem

Posted on Apr 23, 2009

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Im getting P0171 code- lean .


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Jan 27, 2016 | Cars & Trucks

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Check engine light is on and i am getting code p2177 system too lean off idle bank 1 how can i fix this can someone help thank you.


code p 2177 has to reference reasons for fault
1 is system too lean off idle bank 1===causes ---fuel pressure ---injectors --- intake leak
2 is adaptive heating sensor ( HO2S) control, bank 1---signal high===causes--wiring---short to positive ---HO2S--- ECM
the question was the engine operating correctly before the light came on and after the light came on--- if so that would eliminate the pressure and injectors
that would leave replacing the HO2S sensor which is the sensor in the exhaust manifold before the cat converter
make sure you use the correct sensor replacing tool as anything else will damage the wires and connections

Dec 20, 2015 | Cars & Trucks

1 Answer

Hi, I have a VW EOS 2007, check eng light on, 008583 - Bank 1; System too Lean at Idle P2187 - 004 - - MIL ON, then, 004369 - Oxygen (Lambda) Sensor Regulation: Bank 1


The O2 sensor is most likely the issue. Also, try cleaning the Throttle Body Injector with cauberator cleaner or tbi injector. Build up within the TBI may be causing a gas deficiency which causes it to run lean. If that doesn't help, try running a higher octane fuel, about 93 octane minimum. This will causes ANY debree in the injectors to be cleared.

Feb 23, 2014 | 2007 Volkswagen Eos 2.0

1 Answer

Code p2187 and engine light on


according to the data book code p2187 is "System too lean at idle, bank 1" and the probable cause is "fuel pressure, injectors, intake leak". hope that helps

Apr 27, 2013 | 2006 Kia Carnival 2.9

1 Answer

Codes 0171 0174, 0316,0430


code p0171 refers to system too lean bank 1 causes---intake exhaust leak--- AIR system----MAF?VAF sensor fuel pressure/ pump injectors HO2S
code p0174 refers to System to lean bank 2 causes the same except Maf and vaf are not mentioned and hose connections are added
code p0316 refers to misfire detected at star up first 1000 revs causes ---engine mechanicval fault---wiring---ignition/ fuel system--injector
code p0430 refers to cat convertersystem bank 2-- effeciency below threshold causes ----cat converter--- wiring ----HO2S. Personally I would chewck the cat converter first as if it is blocking the exhaust system the ret of the sensors will have irregular readings.

Mar 14, 2013 | Cars & Trucks

1 Answer

I have a 4 liter V6 2003 Ford Explorer ( 2 door). The check engine came on and then it started idling rough. When it idles rough the AC blows hot. Recently it has started stalling when idling at a...


Hello! Most probable cause is a leak in the vacuum line or broken elbow connection to the Positive Crankcase Ventilation (PCV) valve...Check PCV and its vacuum line...Send results...

Guru..............saailer

Aug 27, 2010 | 2003 Ford Explorer

1 Answer

CHECK ENGINE CODE P0171


there is only one bank on a pt cruiser and yes it could be a fuel pump or a vacuum leak

Aug 06, 2009 | 2004 Chrysler PT Cruiser

1 Answer

Codes I have any help


IF U HAN A CODE 171.THATIS BANK ONE FUEL TRIM LEAN.THE WINDSTAR HAD PROBLEMS W/THE VACUUM LINES.U NEED TO SPRAY THE INTAKE MANIFOLD & LINES W/CARB CLEANER IF THE IDLE CHANGER THEN U HAVE A VACUUM LEAK.IF U HAD A MAF PROBLEM U WOULD ALSO HAVE CODE 174 BANK 2 LEAN.

May 05, 2009 | 2001 Ford Windstar

1 Answer

Engine code PO174 for 1997 Dodge intrepid


P0174 Dodge Fuel System Lean (Bank 2)
That is what the code say's,I would think it is the 02 sensor cause it would make it run lean

Jan 18, 2009 | 2001 Hyundai Sonata

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