Question about 2003 Toyota Corolla

Open Question

What is dtc4 repair cost?

Engine check light on and emission report says DTC4 FAIL. Also, emission report says P0171 System too lean (Bank 1)

Posted by on

6 Suggested Answers

6ya6ya
  • 2 Answers

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

Hi,
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.
goodluck!

Posted on Jan 02, 2017

hi99ins
  • 123 Answers

SOURCE: engine light is on

You probably have a vacuum/air intake leak.
With the engine idling, spray very short bursts of starting fluid/ether around the intake and surrounding engine bay and wait a second. If the engine surges, there is an intake leak which you can identify by closing in with the ether.
NOTE:
ALWAYS USE VERY SMALL SQUIRTS IN A DIRECTED AREA AND WAIT FOR IT TO VENTILATE BEFORE TRYING AGAIN ELSEWHERE
Put car outside,
do this in a ventilated area,
dont smoke
have a blanket handy in case of a backfire fire.
DONT spray ether idirectly into the air intake when the engine is running

A bad intake leak is audible by a hissing sound. A bad rubber hose is often the cause.
Any vacuum hose under the hood can cause this.
The PCV valve which can also cause this code when faulty, should be replaced as a matter of course. its in the valve cover and only costs a coupla bucks. They are easy to fit.
Hope that helps
pls be conservative with the ether its not good for your engine in large doses!!

Posted on Jan 07, 2009

  • 1861 Answers

SOURCE: CHECK ENGINE LIGHT CAME ON P0171 FUEL TRIM BANK1 SYSTEM TO LEAN.

Hi. You need to clean the Mass Air Flow Sensor.
This is an easy job.
Get a can of throttle body or brake cleaner spray at your local auto parts store.

Open the hood, and locate the air filter box. follow the tube from the filter box towards the engine. Look for a small black box with 2 screws holding it to the air tube, Remove the wire connector and observe inside the sensor with a flashlight. You will see 2 small wires, and they will appear fuzzy or dirty. Spray the interior with the cleaner until the wires are nice and clean. Do not use compressed air, you will damage the sensor. Put it all back together and drive it.
This will def fix your issue. This is a vey common problem. If you do it yourself, you will save 70 + bucks.

Thanks for choosing FixYa, and a FIxYa rating for my assistance would be greatly appreciated.

Posted on Jan 23, 2009

MNfisherman
  • 11896 Answers

SOURCE: I'm getting the check engine light code: P0171

Trouble Code: P0171

Fuel System Too Lean (Bank 1)
Possible Causes:


A/FS or HO2S is contaminated, deteriorated or it has failed Air leaks after the MAF sensor, or in the EGR or PCV system Base engine "mechanical" fault affecting one or more cylinders Exhaust leaks located in front of the A/FS or HO2S location Fuel system supplying too little fuel during cruise or idle (faulty fuel pump or fuel filter) Fuel injector (one or more) dirty or pressure regulator has failed Vehicle driven low on fuel or until it ran out of fuel

Posted on Jul 23, 2009

  • 194 Answers

SOURCE: bank 1 too lean

ALL CARS fixes are guessing and hoping at best. 1st thing is it a 4 cylinder or a v6. if its a v6 and you have bank 1 lean but NOT bank 2 lean, then you are probably looking for a vacuum leak affecting only bank 1. Stuck injector will NOT ause this code without also setting a misfire code. Cars use fuel trim. Basically you have BASE FUEL which is the preprogrammed best fuel amount for each condition. FUEL TRIM is the result of when the o2 sensor analyzes how rich or lean the car was, then adjusts the fuel trim to compensate as needed. Most cars set a trouble code around +/-25% fuel trim. You really need look at datastream on a scantool and determine if BANK 2 is also lean and just not quite at code level (IE - Bank 1 is at 25% and set a code, Bank 2 is at 22% and did not). In this case, tream it as a problem that affects ALL CYLINDERS instead of a bank.
Now that the bank thing is settled, lets presume you have a 4 cylinder. As said before, vacuum leaks are a common cause and should be checked early on. There are many ways to do this, but the cheapest and easiest is open the hood and listen for the air whistling/sucking sound and follow it. Doesnt always work, but you may get lucky.

Posted on Sep 12, 2009

  • 7353 Answers

SOURCE: have p0130 and p0133 codes 98 toyota tacoma

I would check the O2 sensor, and if it checks bad, replace it, and clear the trouble codes. If the light comes back on, you may need to check further. .

Posted on Oct 28, 2009

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

3 Answers

Check enging is on---OBD code is PO171 & p1443---how do i fixed this problem


The most likely cause of these two codes tripping together is a vacuum leak associated with the canister purge system. This system collects the vented gasoline vapor from the fuel tank and when the engine is running purges the canister into the manifold.

The P0171 is an indication that the engine is running lean and the P1443 is a fault associated with the Purge Control Valve Solenoid trouble code control valve.

Inspect under the hood for a disconnect vacuum line.

The photos are examples of the vacuum circuit connect via hoses. Listen for a vacuum leak when the engine is running. It would be a whistle sound. Also if work has been done recently look in the area that the work was done under the hood.

26150454-uk2ysmhepcorsq0r4fy0hyob-4-0.jpg

26150454-uk2ysmhepcorsq0r4fy0hyob-4-2.jpg Hope this helps?

Apr 03, 2016 | Cars & Trucks

1 Answer

Im getting P0171 code- lean .


About 259,000 results (0.64 seconds) Search Results

    obd ii - 'Check Engine' code P0171 System Too Lean - Is it ...

    mechanics.stackexchange.com/.../check-engine-code-p0171-system-too-l...
    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 ...

    P0171 and P0174 - OBD-II Trouble Codes - RepairPal

    repairpal.com > Encyclopedia > OBD II Codes
    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 ...

    Mazda tribute codes p0171 - Cars & Trucks 'Cars & Trucks

    www.faqqq.com/.../mazda-tribute-codes-p0171-cars-trucks-cars-trucks-6...
    Question Product: Cars & Trucks Question Details: Mazda tribute codes p0171 ... I am getting the following (4) codes in a 2003 Mazda Protege5 engine: P0090 ...

    P0171 Code thrown while idle - Toyota Nation Forum : Toyota Car ...

    www.toyotanation.com > ... > Yaris/Scion iA, Vitz and Echo Forum

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 98 Ford Contour and these codes. - P0708, P0171, P0442


p0708 is transmission range sensor curcuit high output, p0171 is system to lean ( bank 1 ), p0442 is EVAP emission control leak ( small ).

Mar 20, 2011 | Ford Contour Cars & Trucks

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

4 Answers

I have a 2006 Trailblazer. When it is cold outside the check engine light comes on. The code is P0171. But all summer and when temp is above 40 it goes out and stays out til the next cold day then comes...


Code P0171 is a lean oxygen sensor code for bank 1 on your engine. Bank 1 is always the side of the engine where #1 cylider is located.

There are a couple of Technical Service Bulletins (TSB's) that may apply to your problem.

Bulletin No.: 09-06-03-004C
This bulletin covers intermittent problems due to oxidation problems in some of the wiring connectors.

Bulletin No.: 03-06-04-030G
This bulletin outlines repair proceedures for clogged or restricted fuel injectors.

The only other thing I can think of would be a vacuum leak that occurs only in cold ambient temperatures and only affects bank 1. (possible intake manifold gasket or something similar.)

Dec 19, 2010 | 2006 Chevrolet Trailblazer

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

2 Answers

Diagonostic trouble codes reported p0171 p0174 p0302 2001 Taurus, only reports P0171


P0171 is system too lean bank 1, P0174 is too lean bank 2, and 302 is misfire bank 1. Look for vacuum leaks. If you don't find them, put a vacuum gage on it can check. The P0171 is almost always a vacuum leak. If not other possibilities are front O2 sensor is too old and should be replaced (if mileage is greater than 100k then replace). Try injector cleaner. Misfires are usually bad spark plugs, but could possibly be caused by insufficient fuel. I've never had a car of mine in bad enough shape to have that error.

Sep 14, 2008 | 2001 Ford Taurus

Not finding what you are looking for?
2003 Toyota Corolla Logo

Related Topics:

35 people viewed this question

Ask a Question

Usually answered in minutes!

Top Toyota Experts

yadayada
yadayada

Level 3 Expert

74896 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22095 Answers

Jeff Turcotte
Jeff Turcotte

Level 3 Expert

7688 Answers

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

Answer questions

Manuals & User Guides

Loading...