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post #136 of 181 (permalink) Old 07-22-2012, 06:36 PM
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P0505 Idle Air Control.. help anyone?? how can i get this fix?

2003 BO E-Shift / SportDesign / Tein S / Tokico / SRT
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post #137 of 181 (permalink) Old 07-22-2012, 07:02 PM
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Quote:
Originally Posted by jasonm4444 View Post
DTC No. - P0505
DTC Detecting Condition Trouble Area - Idle speed continues to vary greatly from target speed

Trouble Area - Air induction system, Electric throttle control system
Check air induction system. Repair or replace. Check electric throttle control system, Clean throttle body, Inspect Throttle Valve, Inspect Throttle Body Operation, Inspect Throttle Control Motor, Inspect Throttle Position Sensor,Inspect Accelerator Pedal Position Sensor. Replace defective parts

There is no idle air control valve, no idle speed controller, or EGR system. With VVTi valve overlap can be controlled to create an EGR effect,
eliminating the need for an EGR valve. The entire throttle is electronically controlled, and idle speed controlled through the ETCS. What I would do is clean your throttle body and butterfly using carb/TB cleaner. on top of the TB is a 1"x3"(roughly)
rectangular plate held on by two philips screws. You take the cover off and there are a bunch of tiny holes in which your idle air passes through when the butterfly is closed. When I cleaned those holes out I noticed better idle. Definitely worth cleaning and may help with your code. Takes all of about 5 minutes to clean. I can tell you that I've responded to members threads that directly related to DTC P0505, and the simple cleaning as mentioned above took care of the problem with no more code. I would try this first, clear the code, and see if it returns.
from my previous..

'02 IS300 MSM LSD
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post #138 of 181 (permalink) Old 08-08-2012, 04:50 PM
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Quote:
Originally Posted by jasonm4444 View Post
Here is a diagram of how it's layed out:

http://i6.photobucket.com/albums/y21...f?t=1238372098

possible causes of P0442:
-fuel tank cap incorrectly installed
-fuel tank cap cracked or damaged
-vacuum hose cracked, blocked, damaged, disconnected(hose 1,2,4,5,6,7,8,10,11-see image above for hose #)
-fuel tank cracked, holed, or damaged
-chacoal canister cracked, holed, or damaged
-open or short in vapor pressure sensor circuit
-vapor pressure sensor
-fuel tank overfill valve cracked or damaged
-ECM

I see you said you just put your intake back to stock. I would verify the canister closed VSV is connected, which is located right by the stock air box(to the right as you look at the box). The bottom of the valve is supposed to be connected to the bottom of the air box with a short piece of tubing, and the connection(tubing) on the side of the valve goes back to the charcoal canister. I would verify that and check the gas cap to rule out the easiest. hope this helps.
Just changed the gas cap and reset. Code came back. Will run this list of possibles. Great post!!
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post #139 of 181 (permalink) Old 09-13-2012, 09:53 PM
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P0430 and P0051

Just recently put on a new cat-back exhaust system muffler, and a megan racing down pipe (y-pipe). I got the code P0141 and replaced bank 1 sensor 2. Drove for a hundred miles and light came back on, code P0051. I replaced Bank 2 sensor 1 and cleared code. Drove another hundred miles and it came back on again! code P0430. Catalyst Efficiency below threshold bank 2. Does this have anything to do with there being no cat on my new down pipe? or does it mean the cats on my stock headers are junk? Any help for the newbie? lol
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post #140 of 181 (permalink) Old 10-09-2012, 01:27 PM
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Garage
Cel and trac flashing

I own 2001 is300 and the cel is on as well as the trac off is flashing. I was able to get codes from a failed smog. P0440, p1120, p1121. I have looked them up but don't know how to start fixing them. My car will drive fine for awhile but then it seems like I have to floor the pedal for the car to go any faster. Help on this would be great.
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post #141 of 181 (permalink) Old 10-09-2012, 01:40 PM
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Originally Posted by Laxlid View Post
I own 2001 is300 and the cel is on as well as the trac off is flashing. I was able to get codes from a failed smog. P0440, p1120, p1121. I have looked them up but don't know how to start fixing them. My car will drive fine for awhile but then it seems like I have to floor the pedal for the car to go any faster. Help on this would be great.
You have a gas vapor leak, which is what P0440 means. This link and my post in the link should help.
https://my.is/forums/f87/ok-p0440-my-last-nerve-446169/

Check the gas cap, replace if needed. Check the VSV tubing connections near where the stock air box sits.

Both P1120 and P1121 tells me the accelerator pedal position sensor is bad or the wiring to it. P1120 is the accelerator pedal position sensor circuit malfunction, and P1121 is a range/performance problem detected with the APPS. It's part #22060 in the pic below. Toyota part # 2206046070 THROTTLE W/SENSOR LEVER ASSEMBLY. You may be able to find a used one on Ebay or junk yard.

2002 IS300: OEM Engine & Fuel (FUEL INJECTION) Replacement Parts


'02 IS300 MSM LSD
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post #142 of 181 (permalink) Old 11-03-2012, 01:54 AM
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01 auto with 177xxx scanner reads p1346, p0300, p0301, p0302, p0303, p1346. Yes the scanner shows 6 codes with p1346 twice. I have cleaned the MAF and drained/reset computer. Car hesitates when applying gas. Going to SeaFoam gas and hose and replace PCV valve. Any ideas? Thanks in advance.

01 BO: stock til I get of the God For Saken island.

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post #143 of 181 (permalink) Old 11-03-2012, 06:46 AM
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Originally Posted by RainH2O_USAF_2JZ View Post
01 auto with 177xxx scanner reads p1346, p0300, p0301, p0302, p0303, p1346. Yes the scanner shows 6 codes with p1346 twice. I have cleaned the MAF and drained/reset computer. Car hesitates when applying gas. Going to SeaFoam gas and hose and replace PCV valve. Any ideas? Thanks in advance.
DTC P1346 basically means check the oil control valve most of the time. The code is a VVTi malfunction which is picked up by the camshaft position sensor and crankshaft position sensor. Here is a thread on it. It will show you that there is a screen that can clog and keep the engine timing off, with oil flowing. This is not fairly uncommon if using conventional oil especially. Usually Dtc P1349 pops up too.

read my post #32 and #35> https://my.is/forums/f115/help-misfir...20/index3.html

https://my.is/forums/f115/vvti-ocv-install-430720/

'02 IS300 MSM LSD

Last edited by jasonm4; 11-03-2012 at 07:20 AM.
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post #144 of 181 (permalink) Old 11-04-2012, 01:31 AM
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Thanks Jason for another quick reply. Update, I reset codes and two came back P1346 twice. Going to seafoam and clean ocv to try and see if that will help. Thanks in advance.

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01 BO: stock til I get of the God For Saken island.

GO POKES! ORANGE POWER!

Proud to Support Our Troops. Proud Vet.
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post #145 of 181 (permalink) Old 11-04-2012, 07:03 AM
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Alright. Good luck and i hope it stays off. It's very easy to clean the valve so post back once you get to it.

If cleaning and testing the oil control valve doesn't help, check the camshaft position sensor resistance. Spec as follows..
835-1460 @68*
1060-1645 @*operating temp

Verify your timing belt is on securely and has not jumped a tooth as this code can possibly indicate. This code basically refers to the relationship with VVTi between the camshaft sensor.

Pretty much the effected components are these..

'02 IS300 MSM LSD

Last edited by jasonm4; 11-04-2012 at 07:43 AM.
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post #146 of 181 (permalink) Old 11-07-2012, 03:24 PM
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Ok update. I cleaned ocv valve and used seafoam. Car runs better than before but P1346 is still showing. Going to look into getting timing changed or should I just change the ocv out? I also cleaned the throttle body and made sure all clamps on intake are tight. I did find the house that goes from intake to elbow nipple is cracked at the end but that isn't throwing any codes.

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01 BO: stock til I get of the God For Saken island.

GO POKES! ORANGE POWER!

Proud to Support Our Troops. Proud Vet.
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post #147 of 181 (permalink) Old 11-07-2012, 03:45 PM
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That kinda sucks, sorry to hear. I would probably still test the OCV operation by applying battery positive and negative to it to see if it hesitates or stalls when the car is warmed up, as per the steps in my link or fsm. Active test for VVTi is just instant retard for timing to give rough idle or to make engine stall. I would verify your timing is right and hasn't slipped. That would be pretty evident when the top cover is removed and taking a look. I would also still check the ohms on the camshaft sensor at least as well.

'02 IS300 MSM LSD

Last edited by jasonm4; 11-07-2012 at 05:15 PM.
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post #148 of 181 (permalink) Old 12-28-2012, 09:21 AM
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I have P0430 code, I found in the repair manual that it could be a gas leakage on the exhaust sytem, heated oxygen sensor or the front or rear cat. If it was the cat, wouldnt there be some loss of power? I have had a cat go out on a vehicle before where there was loss of power? Any ideas?
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post #149 of 181 (permalink) Old 05-09-2013, 03:07 AM
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Overdue reply. Changed timing belt w/water pump, hose on intake, and valve cover gaskets and cleared the codes and they haven't came back. Thanks to everyone for the advise

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01 BO: stock til I get of the God For Saken island.

GO POKES! ORANGE POWER!

Proud to Support Our Troops. Proud Vet.
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post #150 of 181 (permalink) Old 08-21-2013, 07:28 PM
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Thank god for this thread. I was able to find the issue with my car. Thanks guys.
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