10-21-2008, 08:17 PM
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#1
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Junior Member
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Check engine light on. OBDII code P1135.
I have a 2002 4Runner sport edition with the engine light on. My OBDII code reader picked up code P1135. (Air-Fuel Sensor Heater Circuit Response Malfunction). Is this an easy fix or would I need to bring this in for servicing. If someone knows where this sensor is located please reply and assist me. Thank you.
Greg
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10-21-2008, 11:12 PM
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#2
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Senior Member
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its more commonly known as the oxygen sensor, and is found in the exhaust.
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10-21-2008, 11:48 PM
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#3
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It's Air Fuel ratio sensor. It costs about two hundred dollars at the dealer. You should make sure you give your dealer your car's VIN to match the correct part. You can also get it online from Denso. It's cheaper, but I'm not sure how much cheaper when including shipping cost. I recently changed it on my 02 tacoma. For my tacoma, there were two sensors, one after the first cat converter and the other one after the second cat converter. I had to change the one after the first cat converter.
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10-22-2008, 02:30 AM
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#4
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yes the newer 4runners use the A/F sensors and they are a bit more expensive. More than likely the one before the cat. That's the one that usually throws codes. You can also get them online from URD.
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10-22-2008, 04:55 PM
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#5
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http://cgi.ebay.com/ebaymotors/GENUI...mZ270272808940
Its cheaper and exactly what you need. I had the same problem about 4 months back and this fixed it. Its oem too.
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10-26-2008, 03:15 PM
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#6
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I had this same code (2002 - 91300 miles). Both AutoZone and Advance Auto Parts will read the code free. Once I removed the old A/ F sensor, I used an ohmn meter touching both black wires. The meter didn't move - the circit was open. I purchased an A/F Ratio sensor commonly called an O2 sensor at www.sparkplugs.com
1 - Denso AIR/FUEL SENSOR
Stock Number: 234-9002
Part Number: 234-9002
Unit Price: $153.59 +shipping
but found one cheaper at amazon.com . I've seen that a denso brand was the best . The new A/F sensor had resistence .... To reset the 4Runner's computer I just disconnected the negative side of the battery for a few minutes ....... Reconnected it and then started the engine .. No more light.
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Ken
2002 4Runner
2004 S2000
Last edited by CitadelBlue; 11-05-2008 at 10:10 PM.
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11-05-2008, 09:37 PM
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#7
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check also the ground wire on the manifold. Mine was loose and was sending this code.
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06-27-2017, 05:11 PM
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#8
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P1135 code on a 2001 4Runner SR5
I have a 2001 4Runner SR5. The P1135 code was read from my OBD2 meter. From this forum I found it to be the air/fuel ratio sensor. But others are calling it an O2 sensor, which they are saying is another name.
I looked up the replacement part from Denso's website. They are different parts. I am hoping I'm not going to have to eat a $100 A/F part.
The A/F sensor replacement is 934-9002
And there are two O2 sensor replacement parts, each with their own respective part number.
So, which is it? Is it the Air-Fuel Sensor or O2 sensor(s) that go with OBD P1135?
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06-27-2017, 05:36 PM
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#9
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Quote:
Originally Posted by AllanR
I have a 2001 4Runner SR5. The P1135 code was read from my OBD2 meter. From this forum I found it to be the air/fuel ratio sensor. But others are calling it an O2 sensor, which they are saying is another name.
I looked up the replacement part from Denso's website. They are different parts. I am hoping I'm not going to have to eat a $100 A/F part.
The A/F sensor replacement is 934-9002
And there are two O2 sensor replacement parts, each with their own respective part number.
So, which is it? Is it the Air-Fuel Sensor or O2 sensor(s) that go with OBD P1135?
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1. No doubt on a P1135 on a 2001. It's your Front A/F sensor
2. Part number is 234-9002, not 934-9002. This one:
https://smile.amazon.com/Denso-234-9...234-9002+denso
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'97 HiLux SW4 5spd 4WD(Japan model bought in Brazil assembled in Argentina, very close to a 3.0 4Runner/Surf)
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06-27-2017, 06:16 PM
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#10
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Quote:
Originally Posted by AllanR
They are different parts....
So, which is it? Is it the Air-Fuel Sensor or O2 sensor(s) that go with OBD P1135?
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1)
@ TheDurk
is correct, it's and Air/Fuel Sensor for code p1135. I believe 02 sensors are still considered "generic" and therefore would have a P0135 for an 02 heater circuit. (The 1 right after P in the code designates a manufacturer specific code, while a 0 means a generic OBD code, same for all vehicles across the board, post 1996)
2) if you ever have doubts, you can always check your smog label on your hood. It will say something at the bottom like "EVAP, SFI, AFS, H02S" as those are the types of emission devices it has. If it says "AFS" that's obviously A/F sensor. If it has 2 02's instead, it will say "H02S(2)".
Of course you need to have the hood that came with your truck, as a lot of guys change them out.
Hope this helps somebody
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06-28-2017, 03:11 PM
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#11
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Quote:
Originally Posted by 4Reak Show
1)
@ TheDurk
is correct, it's and Air/Fuel Sensor for code p1135. I believe 02 sensors are still considered "generic" and therefore would have a P0135 for an 02 heater circuit. (The 1 right after P in the code designates a manufacturer specific code, while a 0 means a generic OBD code, same for all vehicles across the board, post 1996)
2) if you ever have doubts, you can always check your smog label on your hood. It will say something at the bottom like "EVAP, SFI, AFS, H02S" as those are the types of emission devices it has. If it says "AFS" that's obviously A/F sensor. If it has 2 02's instead, it will say "H02S(2)".
Of course you need to have the hood that came with your truck, as a lot of guys change them out.
Hope this helps somebody
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In his case, being a 2001, there is no confusion. Bank 1 Sensor 1 is an A/F sensor on all 4Runners. But you are correct: P1135 is A/F only.
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'99 4Runner SR5 5spd 3.4L V6 4WD(U.S), original '99 Talls in front, OME 906s in back, Hella fogs, Trekmaster shocks in front, Billy in back, no running boards, FIAMM horns, Alpine sound, Michelin LTX M/S2's, owned since new.
'97 HiLux SW4 5spd 4WD(Japan model bought in Brazil assembled in Argentina, very close to a 3.0 4Runner/Surf)
'71 FordWillys Jeep CJ5 (with straight six Ford Maverick 3.0 liter engine--lives in the mountains north of Sao Paulo Brazil)
My Backyard Frame Swap
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06-28-2017, 08:34 PM
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#12
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Join Date: Jun 2015
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Real Name: Chris
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Quote:
Originally Posted by Stick Figure
its more commonly known as the oxygen sensor, and is found in the exhaust.
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NO IT'S NOT. There are two different sensors that Toyota used, depending upon year and emissions package. It is important not to confuse the two different sensors.
Look around carefully online, you can get this sensor for about $150 shipped.
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