Question about 2005 Honda Accord 2.4

1 Answer

Check engine light on po171, but car run good

What would be the first thing to fix

Posted by on


1 Answer

  • Level 2:

    An expert who has achieved level 2 by getting 100 points


    An expert that gotĀ 5 achievements.


    An expert whose answer gotĀ voted for 20 times.

    Night Owl:

    An expert who has answered 10 or more questions between 12 midnight and 6am on the same day.

  • Expert
  • 97 Answers

This is an indication of to lean a mixture on the bank one oxygen sensor. Warm the engine up and start looking for some sort of vacuum leak on the bank one cylinders. Possibly a vacuum hose or maybe an intake gasket. I have always used a non-flammable type of cleaner like brake cleaner and put a small straw on it so I can direct it at each of the intake ports and vacuum hoses in the related area and watch/listen for a misfire.

Posted on Mar 24, 2014


3 Suggested Answers

  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.

Posted on Jan 02, 2017

  • 8273 Answers

SOURCE: check engine light on code

Hi, this code indicates your engine has a vacuum leak between the inlet hose airflow sensor and the engine valves. the leak could be a crack in the big inlet hose; a loose, cracked, or disconnected vacuum hose; or possibly a leak in the intake manifold gasket. First check all of the hoses and repair as necessary to eliminate any vacuum leaks. If those all look good, get some carb cleaner, start the engine, and spray the carb cleaner on the intake manifold gaskets. Assuming you have a 4-cylinder engine, the intake manifold gasket is behind the valve cover and spark plugs. If the engine speed changes while you are spraying the carb cleaner, you will need to replace the intake manifold gaskets. Please let me know if you have more questions, and thanks for using FixYa.


Posted on May 07, 2011

  • 147 Answers

SOURCE: My Honda Accord 2000 runs great but the check

p0700 generic trans failure...p0780 mis shift code
1470 is diagnostic pump failure... you cant fix it on the street...

Posted on Jun 17, 2010

Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

2 Answers

I have a 2005 Pontiac aztek and if barely touch the gas it runs good then when I accelerate it bogs down on me

Must have a check engine light on. Need a code 2 go further. 1st place 2start.

Jun 19, 2016 | 2005 Pontiac Aztek

1 Answer

Po171 code came up on my 99 jeep grand Cherokee larado an the air bag light is on an the abs light how do I fix theses problems

First step is to look up Jeep trouble code PO171
This is the link I found:

I don't know about the airbag or abs lights. My old AMC concord used to light up all sorts of odd ball combinations of lights to signal stuff not related. You could look under your seat to see if any wire harnesses have come unplugged by stowing things under the seat but if nothing is hanging down obviously I would focus on the code PO171 first. Which as you can see has a lot of possible fuel and air type problems. It points you in the general direction. It is the actual behavior and performance of the engine that is your main concern. How is it running and is there any other symptoms or power loss you can feel and when? Have you done your regular maintenance and replaced your air filter or any recommended fuel filter changes from the owner's manual? If that stuff is done often the appropriate spray cleaner from the auto parts store can get things back without any repair at all. I sprayed one sensors harness with electronic cleaner and my code went away because oil and dirt from my smoky engine was blocking the signals.

Dec 20, 2014 | Cars & Trucks

2 Answers

2001 GMC Sierra 5.3 check engine light Po171

with the engine cold spray the intake manifold near the gasket with the carb cleaner see if the idle changes if it does replace the gasket

Mar 08, 2014 | GMC Sierra Cars & Trucks

1 Answer

How to fix code po171 volvo v70 t5

Replace the MAP Sensor again. alot of times they are botb. (Bad out of the box) I realize how much of a pain this is but, like with any computer component that has no way of testing it these things happen. Good luck.

Feb 19, 2014 | Volvo Cars & Trucks

1 Answer

2003 Ford Expedition check engine codes PO171 & PO174

You should be replacing all upstream oxygen sensors,
the ones at the inlet or pipe before the converter,on all
your vehicles at 100,000 miles

Go to Rock Auto.Com & buy two & install yourself

NTK 22060 $26.79 ea

Feb 18, 2013 | 2003 Ford Expedition

1 Answer

PO171 system too lean (bank 1)

The check engine light is on ?? Yes? Check the pre catalitic converter Oxygen sensor or upstream sensor. If the car has in excess of 100,000 miles it's probably bad. If it has less than 100,000 take it back to the dealer because these things have a warranty that is federally mandated for 100,000.

Apr 23, 2012 | Cars & Trucks

1 Answer

1997 buick lasabra engine code >po171

The trouble code is related to a lean engine fuel trim problem. This particular code can be caused by a vacuum leak, low fuel pressure or faulty MAF or MAP. Check for vacuum leaks first, if you cant find any broken or cracked hoses, you might want to take it to a good shop and have live data read to determine if there is a component defective.

Nov 12, 2011 | 1998 Buick LeSabre

1 Answer


sounds like EGR valve and sensor this controls idle speed when at a stop. the po171 is a burn lean or rich code need to know what bank 1 or 2. also check for a vacuum leak from one of the hoses.

Aug 07, 2010 | 1998 Ford Contour

2 Answers

My check engine light is on with codes PO171 and PO174

hello your codes that u are getting mean both banks are running lean.And there are only so many things that it could be.lets start with things that are near free first change the fuel check the fuel pressure with a fuel pressure gauge.if u dont have one any car shop should have one. and should be able to do the test for u in a couple of minutes.for 25.00 dollars or for has to be at least 35 psi.if the fuel filter dosnt fix problem.and the fuel pressure is over 35psi more like 40 psi.if not your fuel pump is no good.if over 35 psi then last but not least the fuel pressure regalator is no good.

Mar 10, 2009 | 2000 Ford Windstar

1 Answer

Codes P0171 and P0316

code po316 is a random misfire like plugs or wires po171 will cause po316 po171 is a lean o2 code on bank # 1 that is a vacuum leak need to check it better for a vac leak

Dec 14, 2008 | 2003 Ford Windstar

Not finding what you are looking for?
2005 Honda Accord 2.4 Logo

56 people viewed this question

Ask a Question

Usually answered in minutes!

Top Honda Experts


Level 3 Expert

76164 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22156 Answers

Kevin Daniels

Level 3 Expert

1455 Answers

Are you a Honda Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides