P0171 again
12-20-2006, 04:27 AM
#22
Contributing Member
it was actually code 1133, not 1138. so tonight i ran 1/3 can of seafoam through the brake booster hose, and turned it off for about 10 minutes, started it and the smoke poured out for about 10 minutes. i put the rest of the can into the gas tank, reset the computer, drove it about 15 miles and still no CEL. im gonna do the fuel filter tomorrow just for good measure, i priced a few MAF sensors, and they are well over 200 here. so im still lookin for one. does anyone what exactly what code 1133 means?
P1133 HO2S Insufficient Switching Sensor 1
P1133 HO2S Insufficient Switching Sensor 1
OK, that's more like it and it changes the order a bit......because the A/F sensor may be going bad and causing the leanout condition (P0171). I would start by replacing the A/F first, then if the codes come back, do the MAF.
12-20-2006, 01:07 PM
#24
Contributing Member
12-24-2006, 12:00 PM
#25
Registered User
Join Date: Dec 2006
Location: vancouver,wa
Posts: 74
Likes: 0
Received 0 Likes
on
0 Posts
i replaced the MAF yesterday with a known good one, out of another 4 runner, the truck runs good now but the light came on today after driving about 5 miles, codes 1133, 171, and 125 are showing... the truck is still running good tho. i just reset the computer again to turn the light off and i will see what happens... i added a can of seafoam lastnight to a full tank of 92 octane as well. any idead as to why it would come back on?
12-24-2006, 01:55 PM
#26
The P1133 is an air fuel ratio sensor, so you must have a California spec? This looks like an O2 sensor, but isnt and wont interchange. I dont even know if the parts stores sell A/F sensors. The one in question, ie P1133 is B1S1, all sensors past the cat are still the regular O2 sensors, but the ones before are A/F sensors. ALso, try disconnecting the battery after making repairs. This will clear the memory of the LTFT (long term fuel trim) and will run much better right away.
12-24-2006, 04:45 PM
#27
Contributing Member
The P1133 is an air fuel ratio sensor, so you must have a California spec? This looks like an O2 sensor, but isnt and wont interchange. I dont even know if the parts stores sell A/F sensors. The one in question, ie P1133 is B1S1, all sensors past the cat are still the regular O2 sensors, but the ones before are A/F sensors. ALso, try disconnecting the battery after making repairs. This will clear the memory of the LTFT (long term fuel trim) and will run much better right away.
Was the A/F sensor you replaced previously an OEM part? or aftermarket? was it new?
The P0125 means Insufficient Coolant Temperature for Closed Loop Fuel Control
There are quite a few threads with the same combo of codes....
https://www.yotatech.com/forums/f2/how-do-first-post-help-brotha-out-idle-problems-101253/
https://www.yotatech.com/forums/f2/help-cels-76540/
Another tech writeup that might help:
http://www.4x4wire.com/toyota/4Runner/tech/O2_Sensor/
I still think you've got sensor issues (MAF or A/F, but more likely the A/F sensor) if the codes don't stay off after you reset per above). You might want to have a shop look at the A/F sensor sine wave and response to see if there is a problem with the sensor you just instaled.
Last edited by MTL_4runner; 12-24-2006 at 05:20 PM.
12-25-2006, 09:15 AM
#28
Registered User
Join Date: Dec 2006
Location: vancouver,wa
Posts: 74
Likes: 0
Received 0 Likes
on
0 Posts
now its running like ÅÅÅÅ...driving on the freeway this morning and it would like...cut out. and started jerking. im going to get a a/f sensor and see of that helps... i have a feeling the sensor i got before was just the o2 sensor
12-25-2006, 09:39 AM
#29
Contributing Member
Cross reference the part number you got with the part numbers here:
http://www.urdusa.com/product_info.p...s_id=430006000
.....at least if you need to get another you'll have the right P/N beforehand.
Last edited by MTL_4runner; 12-25-2006 at 09:43 AM.
12-25-2006, 04:47 PM
#30
Well, they should of asked you the question "is this a california emissions"??? Also, the P0125 is basically a sensor also.
12-26-2006, 06:50 AM
#31
Registered User
Join Date: Dec 2006
Location: vancouver,wa
Posts: 74
Likes: 0
Received 0 Likes
on
0 Posts
i dont have the part number, im going to call them today and i will get it... it seems to be running better now but i dont know whats goin on with it... but they did not ask about california emissions. so im wondering if thats the problem. i will call them today and find out
12-26-2006, 07:45 AM
#32
i dont have the part number, im going to call them today and i will get it... it seems to be running better now but i dont know whats goin on with it... but they did not ask about california emissions. so im wondering if thats the problem. i will call them today and find out
12-26-2006, 08:24 AM
#33
Registered User
Join Date: Dec 2006
Location: vancouver,wa
Posts: 74
Likes: 0
Received 0 Likes
on
0 Posts
this things giving me a headache... the CEL went off today on the way to work, it seemed to be runnin ok. its still firing right up, not taking nearly as long to start as before(since replacing the MAF) but im pretty sure its just going to come back on again... it seems every time i replace something and reset the computer, it takes between 30 and 50 miles and the CEL comes back on, but im going to check on the california emissions today when i get off and see what i can come up with... IF the light comes back on it would be on my way home from work, so i will post more info a little later today...
12-26-2006, 08:47 AM
#34
Registered User
Join Date: Oct 2006
Location: Boone, NC
Posts: 157
Likes: 0
Received 0 Likes
on
0 Posts
My CEL for a MAF/O2 code comes and goes. The whole system is wierd like that. I will have the light and code for some time then it will randomly go out and not come on again for a few thousand miles. When it stays on for a long period of time 1-2 weeks, I will just reset the computer and disconnect/reconnect the battery and that will take care of it for a few thousand more miles.
12-26-2006, 08:50 AM
#35
Registered User
Join Date: Dec 2006
Location: vancouver,wa
Posts: 74
Likes: 0
Received 0 Likes
on
0 Posts
mines never stayed off for that long tho... between 30 and 50 miles normally...when it would come on did it seem to run kinda weird? how was your gas milage? i filled up with 92 and added 1 can on seafoam. and ive only gona about 200 miles and i think i have to get gas again today... that seem about right?
12-26-2006, 09:22 AM
#36
Registered User
Join Date: Oct 2006
Location: Boone, NC
Posts: 157
Likes: 0
Received 0 Likes
on
0 Posts
I have no clue what the problem is now that you have said that. Even driving with the light on for 2 weeks I still managed 225-250 combined city and highway and right at 300 per tank on the highway. My gas mileage has never fluctuated because of the CEL's and their respective codes. wierd.
Last edited by StretchASU; 12-26-2006 at 09:23 AM.
12-26-2006, 10:12 AM
#38
Contributing Member
The code that showed up only shows up on rigs with A/F ratio sensors. Now A/F sensors are more common and on other rigs now, not just "cally" models. But for your year, the A/F was unique to the Cally models. Tell them you want an A/F ratio sensor and let us know what blank look they get on their face. Tell them its not an O2 sensor. Hey, you might want to check and see if you do in fact, have California emissions (label under hood) I suppose its possible you dont and someone substituted a Cally ECU, but highly unlikely.
This is common with installing the wrong sensor:
http://www.tundrasolutions.com/forum...sor-now-p0172/
Brandyn, hopefully you'll post up when you finally get this licked because I'm sure there are quite a few others experiencing the same thing and this thread has run through alot of info/diagnosis.
Last edited by MTL_4runner; 12-26-2006 at 12:59 PM.
12-26-2006, 01:05 PM
#40
Contributing Member
It's all on Gadget's URD website under the O2 sensor section I posted above.
http://www.urdusa.com/product_info.p...s_id=430006000
