1998 eldorado 4.6 Y what oxygen sensor is what from all banks

On a V6 engine, bank 1 is on the drivers side or the bank closest to the firewall. Sensor 1 is the one in the exhaust manifold BEFORE the catalytic converter and sensor 2 is just after in the cat on the way to the tail pipe. On a 4 cylinder engine, there are only two sensors, before (1) and (2) after the Cat.

https://www.google.com/search?q=1998+honda+crv+oxygen+sensor+Bank+1+Sensor+2+location

Buy Denso OEM (original equipment manufacturer) sensors, don't go cheap on Mexico of China copies.

https://www.google.com/search?q=1998+honda+crv+oxygen+sensor

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code p 0134 refers to heated oxygen sensor(HO2S) 1 bank 1--no activity detected ===causes ---wiring open circuit--heating inoperative---HO2S sensor
it also refers to oxygen sensor (O2S) 1 bank 1 --no activity===causes wiring -- oxygen sensor
HEATED oxygen sensors are in the exhaust manifold or exhaust pipe before the cat converter
oxygen sensors are in the exhaust pipe after the cat converter
bank one is the side closest to the radiator on a cross fitted engine or on the lhs with you facing the fan

follow your exhaust system you should see them in the pipe you have 1 up near manifold or in the manifold and the other after the catalic converter 4 cycl have 2 6 cycl have 4 also you have up stream bank 1 sensor 1 bank 2 sensor 2 bank 1 sensor 2 bank 2 sensor 1 and downstream as well so some models before cat converter and after

P0139: O2 Sensor CKT Slow Response (Bank 1 Sensor 2)

- Rear Heated Oxygen Sensor Bank 1 harness is open or shorted
- Rear Heated Oxygen Sensor Bank 1 circuit poor electrical connection
- Faulty Rear Heated Oxygen Sensor Bank 1
- Inappropriate fuel pressure
- Faulty fuel injectors
- Intake air leaks may be faulty
- Exhaust gas leaks

Fig. Fig. 3: Oxygen sensor-4.3L engines

Fig. Fig. 4: Oxygen sensor-5.0L and 5.7L engines

Fig. Fig. 5: Oxygen sensor-7.4L engines

Oxygen sensors are always numbered like this:
Bank 1 sensor 1
Bank 2 sensor 1
Bank 1 sensor 2
Bank 2 sensor 2

Some manufacturers use a kind of shorthand that reads different, but means the same thing:
Sensor 1/1 or O2s 1/1
Sensor 2/1 or O2s 2/1
Sensor 1/2 or O2s 1/2
Sensor 2/2 or O2s 2/2

Bank 1 is always the side of the engine where cylinder number 1 is located and, of coarse, Bank 2 is the opposite side.
On a 4 cylinder engine, there is only 1 bank and it is always referred to as Bank 1.

Sensor 1 is always the upstream sensor (the one located BEFORE the catalytic converter)
Sensor 2 is always the downstream sensor (the one that is located AFTER the catalytic converter.

Hope helps (remember to rate this).

Bank two oxygen sensor, located in front of the catalytic converter on the passenger side has failed. The actual code reads: P0151 - Heated Oxygen Sensor (HO2S) Circuit Low Voltage Bank 2 Sensor 1.

my 1998 Montero Sport has 4

P0305 IS # 5 CYLINDER MISFIRE DETECTED.P0135 IS BANK 1 SENSOR 1 OXYGEN HEATER CIRCUIT FAILURE

Hello mrsalbert, my name is JShreader. Thank you for choosing fixya.com

Depending on which oxygen sensor you are looking for...there are several of them throughout the Exhaust System. I will start out by giving you a brief description of what and oxygen sensor is, and they're general purpose.

DESCRIPTION
Four Heated Oxygen Sensors (HO2S) are mounted in the exhaust system where they monitor the oxygen content in the exhaust stream. There is an oxygen sensor mounted in each exhaust manifold and one on each end of the catalytic converter. the oxygen sensor located in the front exhaust manifold is the Bank 2 Sensor 1 (Front) sensor. The oxygen sensor located in the rear exhaust manifold is the Bank 1 Sensor 1 (Rear) sensor. The oxygen sensor located in the Y-pipe ahead of the catalytic converter is the Bank 1 Sensor 2 (Pre-converter) sensor. The oxygen sensor located in the catalytic converter outlet is the Bank 1 Sensor 3 (Post-converter) sensor.

OPERATION
An oxygen sensor acts like a battery because it creates its own signal voltage once it reaches operating temperature. This voltage is produced when the oxygen content in the exhaust stream is different than the oxygen content in the atmosphere. A lean condition (high oxygen content in exhaust) will produce a low voltage (near 0 volts) and a rich condition (low oxygen content in exhaust) will produce a high voltage (near one volt). The PCM provides a reference signal voltage (0.45 volt) and a ground to the sensor. The PCM reference voltage is necessary because the oxygen sensors do not provide their own voltage until they reach operating temperature.

HEATING ELEMENT
the oxygen sensors also incorporate a heating element inside of the sensor housing. This heating element is energized with the ignition On and allows the sensors to reach operating temperatures quickly. The PCM can then use oxygen sensor information sooner after engine start-up.

PCM INPUTS
The PCM uses oxygen sensor information during Closed Loop operation to constantly adjust fuel control to reduce exhaust emissions. Because the oxygen sensors provide information sooner after engine start-up, exhaust emissions are reduced. Faulty oxygen sensors will cause various driveability conditions and will set a DTC.

That being said...I uploaded a .pdf for you of pictures showing the locations of ALL the oxygen Sensors on your Vehicle. You can download it by clicking HERE.

I hope this helps you. If you have any more questions or need any more diagrams, please don't hesitate to ask...Thanks again, JShreader!