Question about Toyota 4Runner

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2000 toyota 4 runner the code p1135 bank 1 sensor 1 (bad sensor). where is this sensor located and how many 02 sensor a 4 runner have. can i swap the bank 2 sensor 2 with bank 1 sensor 1 to see if the code will change. like the codes on p0302 and p0301.

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  • Rudy Cordova
    Rudy Cordova Aug 06, 2010

    THANK YOU VERY MUCH THIS IS VERY HELPFULL. KNOWING YOU CAN SWAP THE O2 SENSOR AND THE PICTURE YOU SHOWED. AGAING THANK YOU.

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P1135 Air/Fuel Sensor Heater Circuit Response (Bank 1 Sensor 1)
almost certainly the heater inside the sensor has failed, the heater speeds up the time it take for the system to go into closed loop fuel control.
The bank 1 sensor one is located in the exhaust just off the engine, it is before the catalytic converter, the sensor after the cat converter is like an O2 but performs a different function and is not related to fuel mixture control, You don't say what engine u have, if it is a 4 cylinder then there is just one O2 sensor (Toyota calls them Air Fuel sensors), in the V6 engine there are 2 O2 sensors, one for each bank of cylinders bank 1 on the V6 is the passenger side cylinder bank (see diagram below), and yes you can swap sensors to see if the code switches sides.

2000 toyota 4 runner the - 4dda415.gif

Posted on Aug 06, 2010

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Needdiagnosis on 02 toyota siena le 3.0 have problem codes p1135,po141


3.0L V6

Sienna
wild guess, the 1MZ engine?



141 fed code is. (it means B1S2 heater is bad,or wire to it cut or shorted.) below is fSM spec. worsd.





HO2S-12 (Bank 1 Sensor 2) Heater Circuit Malfunction








Number of Trips to Set Code: 2

Trouble Code Conditions:

Engine started, engine running, and the PCM detected the HO2S-12 heater current exceeded 2 amps, or that it was 0.25 amps or less.

Possible Causes:



  • * HO2S heater control circuit is open, shorted to ground or power


  • * HO2S heater power circuit is open (check power from the relay)


  • * HO2S heater is damaged or has failed


  • * PCM has failed



then the factory code p1135 same deal,same reasons B1S1





A/F Sensor-11 (Bank 1 Sensor 1) Heater Circuit Malfunction








Number of Trips to Set Code: 2

Trouble Code Conditions:

Engine started, engine running, and the PCM detected the A/F Sensor-11 (A/FS-11) heater current was less than 0.25A, or that it was more than 8.0A at anytime during the CCM test.

Possible Causes:



  • * A/F sensor heater circuit or ground circuit is open


  • * A/F sensor heater power circuit is open


  • * A/F sensor heater is damaged or has failed


  • * PCM has failed




bar stool answer.

both bank 1 senors (oxygen) are bad. if wires are good.



easy answer ,no?



the PCM never lies. the current IS ILLEGAL,(BAD)

the why takes , inspection and ohms checks , FSM shows this..



your next question is where is bank 1,

its on cylinder 1 side.

your next question is , where is cylinder 1,

it the cylinder that sticks out further to crank front pulley.



front 134

front 246

Feb 27, 2014 | Toyota Sienna Cars & Trucks

1 Answer

Part no code p1135


is this a suzuki or a toyota? or a frenza that is really a POS Daewoo?
wow ! no car even stated only a maker, Suzuki. ouch.
and worse ,no year, ouch.
p1135
(my worst guess ever....)
P1 means mfg code.
1135 is oxygen sensors reading wrong, (they can be good)
what engine? suzuki has 56 engines.
the engines have 2 to 4 oxygen sensors.
best i can tell its the 02 heater is bad(wires cut?)
best i can tell it is B1S1 (left bank front sensor) bank 1 sensor 1.?
post car make, car brand model and engine?
and for sure displacment or at least the number of cylinders.
i can then post the full FSM spec, on 1135s

Nov 28, 2013 | Suzuki Cars & Trucks

1 Answer

02 camry V6 Random Misfire and code P1135


PER "http://www.obd-codes.com/trouble_codes/toyota/" P1135 =
Air/Fuel Sensor Heater Circuit Response. (Bank 1 Sensor 1)

Dec 14, 2010 | 2002 Toyota Camry

2 Answers

How to change a fuel bank sensor #1 code p1135 on


P1135 Air/Fuel Sensor Heater Circuit Response. (Bank 1 Sensor 1) ask any auto parts store what the fix is.

May 17, 2010 | 2002 Toyota Tacoma

2 Answers

Engie lite on -- reads p1135


02 sensor heater code. Replace the sensor.

Oct 31, 2009 | 2002 Toyota Tacoma

1 Answer

2003 Rav 4 has P1135 error code. What is wrong


A/F Sensor Heater Circuit Malfunction (Bank
1 Sensor 1).
You most likely have a bad Air fuel sensor bank 1 sensor 1.

Oct 25, 2009 | 2003 Toyota RAV4

2 Answers

My 02 toyota 4runner have code p1135


CODE P1135 AIR FUEL RATIO SENSOR HEATER OR CIRCUIT FAULT.THE AIR FUEL SENSOR AHEAD OF THE CATALYTIC CONVERTER.BASICALLY ITS THE UPSTREAM SENSOR LOCATED IN THE EXHAUST MANIFOLD.THIS IS THE PART YOU NEED IT LOOKS LIKE OXYGEN SENSOR .BUT ITS NOT.

Oct 06, 2009 | 2002 Toyota 4Runner

1 Answer

Code p1135 what wrong help,toyota 2000,highlander


That code is specific to the Air-Fuel Ratio (A/F) Sensor Heater Circuit Malfunction (Bank 1 Sensor 1)

P1135 Trouble Area:
 Open or short in A/F sensor (bank 1, sensor 1)
 A/F sensor (bank 1, sensor 1) heater
 ECM __________________

Jun 17, 2009 | 2001 Toyota Highlander

3 Answers

Getting code p1135 and p1155 on toyota rav4 2002


Here's what the codes mean:
P1135 Air/Fuel Sensor Heater Circuit Response (Bank 1 Sensor 1)
P1155 Air/Fuel Sensor Heater Circuit. (Bank 1 Sensor 2

This is mainly related to the oxygen sensors. It maybe the sensors themselves or an open wire going to te sensors. They are mainly located on the exhaust pipe. One before and on after the catalytic converter.

Apr 15, 2009 | 2002 Toyota RAV4

2 Answers

Check engine light on


This is a code that is indicating you have a problem with the "bank 1, O2 sensor 1" heater circuit. Bank one is the side of the engine that has cylinder #1, and sensor #1 is the O2 sensor on that side that is before the catalytic converter. This code sets when the computer senses that it either takes too much or too little current to drive the heater inside the O2 sensor. Typically, most shops would simply put a new O2 sensor in this location as it is ten years old and there is a good chance that the O2 sensor has burnt out However, there is a possibility that the driver circuitry has a problem as well.

I would replace the sensor, I believe it is the one on the passenger side between the engine and the cat. After that, you will have to drive it a bit for the code to cancel, or you could have it reset with a scan tool.

Mar 22, 2009 | 1999 Toyota 4Runner

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