How to Fix P0171 Engine Code in 2 Minutes [2 DIY Methods / Only $8.37]

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===== How to Fix P0171 ===========

Engine Code P0171 Saving Repair Parts:

This video shows you How to Fix Engine Code P0171 in the easiest, quickest, and cheapest way. 2 practical solutions to fix the P0171 error code. 2 simple DIY solutions to repair P0171.

Engine Code P0171: System Too Lean (Bank 1). The fuel system is running weak or a vacuum leak exists near the engine. Engine Code P0171 means that the engine air-fuel mixture is too lean. It indicates that the Bank 1 of your car has too much air or not enough fuel.

Fix Engine Code P0171 Easy DIY Method A | The MAF Sensor
(1) Remove the MAF sensor
(2) Spray clean the MAF Sensor
(3) Reinstall the Dried MAF Sensor

Fix Engine Code P0171 Easy DIY Method B | The Oxygen Sensor
(1) Remove the Oxygen Sensor
(2) Reinstall a new Oxygen Sensor

Related Codes and Their Repairing Methods:

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0:00 What is P0171
0:34 Method A - The MAF Sensor
1:03 Method B - The Oxygen Sensor
1:33 Claim a FREE Engine Code Eraser

[nondainc]

Hi, I'm Steve, nonda's lead mechanic engineer.
Feel free to leave your comments here if you have any mechanic questions, I will be glad to help you out!

[jorgeochoa]

Hi Steve i have this code on my 15 altima, but the code comes and goes and my main problem is that the car will start right away when cold but I have a hard trying to turning back on when the car is warm, i tryed cleaning the MAF sensor and replacing the cranck shaft sensor but didnt successed, any recomendations?

[soty]

Hi, I have a 2001 Audi A3, 75 kw, P0171 is the only fault I have, and I have replaced the lambda sensor before the catalytic converter, so probably going to be a bad maf sensor ?

[Undoubtedgrape]

Hi Steve, I just got this reading on my car I have a 2008 Pontiac Grand Prix but there isn't any videos on how to fix it, could you give me any tips? And autozones diagonistics says i need to replace my intake manifold gasket. Any help would be most appreciated!

[syfodias-jedimaster]

Hi Nonda, so my code a few days ago was p1033 (sensor1) that was fixed then p1036 (sens2)(hadent fixed this), then a few days later code is showing up as p0171.
Should i try n replace secondary air sensor?

[pmarker]

2002 Toyota Highlaner 4 cylinder. It seems P0171 code comes on just once in a while and resets itself after I drive for a while. The MAF was replaced about 4 months ago. Passed a smog test just fine last month. 1 day or so after filling up the tank, the engine light P0171 came on. I wonder what's causing P0171 to come on and then resets it. Thank you

[adriannorris]

Hi Nonda, I have a 2005 Accord Ex v6. Has P0171 and P0174. I have replace injectors after market. Replaced intake gaskets with proper torque and sequence. I have smoke tested intake and engine for vacuum leaks. No obvious results. fuel pressure 55-60 psi while running. Replaced EGR, PCV, complete charcoal canister with shut valve new purge valve, fresh oil and new air filter. Still shows these codes. I did not replace o2 sensors or cats. No fault codes for them. The ST and long term fuel trims are plus 1.2 and 1.1 respectively no matter the engine speed. Any help greatly appreciate it.

[chiefcooper]

I have a 2013 Chev Sonic. It was my daughter's. She had an accident but was mostly fender/hood damage. PO171 is the diagnosis. You think change the sensor or MAF first?

[kyleramirez]

Replaced MAF sensor, o2sensors, fuel filter, fuel pump, fuel injectors, had a shop look for vacuum leaks, I have no idea what else to do from here….

[tenkohotyneznas]

Hi, my Skoda Octavia 1, 1.6l 75kw made in 2004. I cleaned MAF sensor, changed fuel filter, and didn't find any air leaks between air filter and engine. Is it posible to be problem in oxygen sensor, egr or in spark plugs? I don't want to change half of the car to find the problem. Thanks for answers

[ashoksaini-xiuf]

Pl. help.. Bmw 2013 X3 changed engine 2015 (Compatible) Check engine light, and Drive trainmalfunction sign,
no vacuume leaks I check all hoses.Had a basic scanner to check codes, I got P0171 01/02 & P0171 P 02/02.
Can you please interpret the meaning of these codes.I already spent $7000 engine change n labour, but nomore money.Please advise.Thanks in advance.Ash(Toronto)

[paulnightwolf]

After I replaced both of them the map and the 02 sensor. And erase the code if it's something else the code should come back how long would that take.

[HondaFitAdventure]

Mine ended up being a EGR valve and a loose oil catch can creating a vacuum leak.

[darlacolwell]

I have a 2016 Buick Encore and when I remote start it, it pops the P0171 code and the check engine light comes on and then shuts the vehicle off when I restart it, the engine light is still on but the car runs fine. Any ideas? Also is this part of the powertrain?

[PRIC]

Hi I have a 1998 f150 v8 5.4l and it has this code and a different one Both lean codes for bank 1 and 2 it has brand new maf and o2 sensor as well as Egr and Egr pressure feedback sensor I need help

[frankorellana]

I have a 2005 mustang gt throwing me p0141 and p0171. Inspected the downstream o2 sensor it was worn out and replaced it with a new one and now just throwing p0171 ? What could be the problem?

[brandonrodgers]

i have a 1997 Chevy Malibu LS V6 and a check engine light has shown up, indicating P0171- System too lean (Bank 1). what do i have to replace to get it to go away.

[kalangelmanzanillo]

Please make a video about acceleration problems on a 2011 Chevy Equinox. My vehicle only accelerates up to 30 miles/ hour. What is wrong? Thank you in advance!

[ZaiaFuentes]

Great video! My 2014 Mazda 3 Sport recently had this code pop up. I am limiting my driver. Ordered an o2 sensor on Amazon and taking it to my uncle to install it. Hope this clears the code! I noticed that my MPG while driving was drastically going up and down. Does that sound like it could be the 02 sensor causing that?

[hardlyyr]

2011 chevy cruze, replaced both still have the light, any ideas, i cant hear any sort of vacuum leak