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What side is 420 bank 1 toyota siena 2005 3.3

Posted by Anonymous on

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6ya6ya
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Posted on Jan 02, 2017

  • 1861 Answers

SOURCE: Where is Bank 2 Sensor 1 (B2S1) O2 sensor located on a 1999 Siena

Bank one, sensor one is on the front of the engine, closest to the radiator.

Bank TWO, sensor one, is on the back of the engine, cosest to the firewall. That one is not easy to change, unless you have access to a vehicle hoist. Easier to get to it from under the car.

Hope htis helps; thanks for choosing FixYa!

Posted on Jan 19, 2009

superjorge1
  • 8 Answers

SOURCE: have p0130 and p0133 codes 98 toyota tacoma

check the mass air flow sensor there maybe dirt on the filiment inside the sensor causing false readings. cleaning or replacing it may make the codes go away.

Posted on Nov 18, 2009

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1 Answer

Hot air on the driver's side but cool air on the other side of my 2005 Toyota Siena xle


sticking control flap or faulty servo motor more than likley the motor, if its got dual climate control it may have a dual control valve in the coolant system which needs checking first

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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

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Where is the 2005 fiat siena elx's diagnostic


Under the dash driver side lower left steering column

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420 code with a check engine light


Code 420 means the O2 sensors are telling the computer the catalytic converter on bank one is not working correctly. Bank one is on the side with cylinder one.
The problem could be the cat, or one of the sensors, or a fuel mixture problem such as a vac leak in the engine or injector problem.
The sensors would need to be tested.

Jan 21, 2013 | 2005 Buick LaCrosse

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2002 Toyota Solara - code 1155 air/fuel sensor heater circuit bank 1 sensor 2 - where is it located?


Hello! Bank 1=Left bank...Bank 2=Right bank...Looking from the transmission side..towards the drive belt side...Left bank=left...right bank=right...Sensor #2 is located behind the cat...

Guru.....................Saailer

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1 Answer

Chevy colorado code 420 and 496 whats the problem?


code 420= Catalyst system efficiency below threshold(bank 1) code 496=Evaporative emission system-high purge flow. Hope this helps if you need more help get back to me Thanks Ray

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1 Answer

Toyota mr2 roadster 2001 engine light on code po141 oxygen sens


bank 1 will be whichever side cylinder 1 of your engine is and bank 2 will be the opposite side. It's named bank 1 and bank 2 so that no matter how the engine is laid out, bank 1 is always on the same side as cylinder 1. I cannot say whether the right hand or the left hand one will be bank 1 as I do not know where your cylinder 1 is. The garage should know

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2 Answers

Trouble code


DTC P0420 Catalyst System Low Efficiency Bank 1

You will find a bad O2 Sensor behind the converter or a bad catalytic converter on the bank 1 side of the exhaust manifold. This is the one on the drivers side.

Jul 28, 2009 | 1999 GMC Sierra

2 Answers

Where is Bank 2 Sensor 1 (B2S1) O2 sensor located on a 1999 Siena


Bank one, sensor one is on the front of the engine, closest to the radiator.

Bank TWO, sensor one, is on the back of the engine, cosest to the firewall. That one is not easy to change, unless you have access to a vehicle hoist. Easier to get to it from under the car.

Hope htis helps; thanks for choosing FixYa!

Jan 18, 2009 | 1999 Toyota Sienna

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