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Where is the o2 sensor on motor - 1990 Toyota Pickup

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Go to Autozone, Pep Boys etc get a free diagnostic computer read of the codes. The tech will sell you the sensor and tell you where it goes. Tough to get it there if you arent a mechanic

Posted on Mar 19, 2014

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Bank 1 and bank 2 02 sensors for dodge durango


bank 1 is the side of motor that has # 1 cylinder you have 4 o2 sensors 2 in exhaust right off motor and 2 after catalytic converter ,you may get a reading that could look like this example 1/1= bank 1 # 1 o2 sensor by motor or 2/1= bank 2 # 2 o2 sensor after catalytic converter, hope that wasent to confusing

Oct 10, 2014 | 2004 Dodge Durango

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What does code p0155 mean


P0155 = 2/1 O2 Sensor Heater Failure, Oxygen sensor heater element malfunction. logic dictates that you replace your O2 Sensor. DIY car obd2 code scanner online shopping

Jun 05, 2014 | 2004 Chevrolet Avalanche

1 Answer

Where's the bank 1 sensor 1 located at my toyota sienna 2007, i know there are 3 sensors in bank 1 and 1 sensor in bank 2 if you can give me the image or view where they are located i really appreciate...


O2 sensors location is broken down like this. The bank refers to which side of the motor the sensor is on. Bank 1 is the same side of the engine as the number one cylinder. Bank 2 is the other side of the motor. Sensor refers to either before the cat or after the cat.

Bank 1 sensor 1 would be the O2 on the side of the motor that the number one cylinder is on and before the cat.

The number one cylinder is on the back side of the motor (the side closest to the firewall). The O2 sensor will be in the exhaust pipe near the exhaust manifold.

Apr 29, 2011 | 2002 Toyota Sienna

1 Answer

I need to know where the O2 sensor Bank2 position 1 on a 1997 3.3 interpid.


O2 sensor locations break down like this.

The bank refers to which side of the motor. Bank 1 is always the same side of the motor as cylinder number 1. Bank 2 is the other side of the motor.

Sensor refers to before or after the catalytic converter. Sensor 1 is always before the cat and sensor 2 is always after the cat.

So bank 2 Sensor 1 would be the O2 on the passenger side of the motor before the catalytic converter. You should see it threaded into the exhaust manifold.

Apr 26, 2011 | 1997 Dodge Intrepid

2 Answers

One of the o2 sensors are bad on my 2003 silverado z71 (5.3) and my truck just started missing really bad, almost to the point where I cannot drive it. Could the bad o2 sensor cause this or could this be...


Yes your o2 sensor could do this, it's most likely the closest one to the motor, the first one that is coming from the engine. That is the one that reads the exhaust gas, it then tells the computer how much gas to mix in with the air. It also could be your MAF(mass air flow sensor) connect to your intake.

*PS I have the same motor, wouldn't hurt, might get better MPG.

Mar 29, 2011 | 2003 Chevrolet Silverado 1500

2 Answers

1999 ford ranger 4x4 4.0L motor is skipping replaced camshaft sensor,crankshaft sensor,new coil pack,new plugs,wires,and replaced mass air flow sensor,now its still skipping and codes pulled are showing...


P1151 means a lean bank 2 O2 sensor
P1152 Means a rich bank 2 O2 sensor
P1309 Means miss fire detected
I would check your fuel injector for fouling
When they foul the will develop a drip
Causing a fuel fluctuation that will have O2 sensors reporting rich and lean voltage changes
This causes the pcm to adjust injector pulses making them shorter and longer.
causing more fuel or less fuel.
From this condition you may see plug fouling.
Also check for leaking or faulty fuel pressure regulator or restricted return line.
Most of the time it wont be a bad O2 sensor the O2 sensor is just doing its job.
You also have already changed the plugs and Map so there already out of the way.
If this helps please give me some feed back
Hope this works for you FixYa

Jan 29, 2011 | 1999 Ford Ranger SuperCab

1 Answer

Where is O2 sensor located on 2000 626 mazda 4 cylinder


the 4 cylinder has only one oxygen sensor. this sensor is a plug in with two wires coming out of it. As the exhaust leaves the motor the o2 sensor tells the car what carbon is leaving the. The o2 sensor is located on the exhaust pipe directly leaving the motor

Sep 17, 2010 | 2000 Mazda 626

2 Answers

1996 grand cherokee starts fine and runs great the first 5 minutes. Then it runs like ****..doesn't completely stall but runs really rough. Like it wants to stall but doesn't. Replaced the fuel pump and...


First thing is; When you changed the fuel pump, did you compare the 2 to see if they were identicle?, because it's possible that you could have the wrong fuel pump.. Second; you should have changed the fuel filter when you changed the pump, if not? you need to put a new fuel filter on... Third... It is possible for the upper o2 sensor, because on your Jeep, you have an OBD II system, which is, ( On Board Diagnostics II) and that system uses two "o2" sensors; One before the catalytic converter and one after the converter. The Primary o2 sensor is the one before the converter; The secondary o2 sensor, or catalyst monitor, is located after the catalytic converter.
The two o2 sensors work on an "open loop and closed loop". When the motor is cold, the o2 sensors are in open loop, which means they are not being used to monitor the exhaust gas, and when the motor warms up- after 5 minutes or so, then the computer switches to "Closed loop" and the o2 sensors are then used to monitor the exhaust gasses, so it is possible that your primary o2 sensor, or the one before the catalytic converter is bad.... But! It's very rare for both o2 sensors to go out at the same time.... I hope that answers your question & gives you an idea of how the o2 sensors work in conjunction with the fuel injection system.

Apr 29, 2010 | 1996 Jeep Grand Cherokee

1 Answer

My car indicates check engine sigh with following two codes 1: p0139 2: p0140


Hi Garcha,

Both codes relate to O2 Sensor # 2

Code P0139: O2 Sensor Circuit Slow Response - Bank 1, Sensor 2
Code P0140: O2 Sensor Circuit No Activity Detected - Bank 1, Sensor 2

A faulty O2 sensor will mean incorrect signals will be sent to the EFI computer, causing erratic engine running.


Cheers,


"If this has helped you in any way, please rate this solution" :-)



Jan 27, 2010 | Hyundai Motor 2002 Elantra

1 Answer

Where are the O2 sensors located? I hace a P0131


the o2 sensors are located on the exhaust pipe running from the motor to the muffler.the wires are made onto the sensor itself.

Jan 13, 2010 | 2005 Subaru Outback

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