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Oxygen sensor Bank 1 Sensor 2

Flex pipes blew under car and melted Bank 1 Sensor 2 wires and connectors. Car ran rough and would get a pop/crackle from speakers upon starting and shutting off car. Mechanic spliced the wires back together, but still had the pop/crackle coming from speakers after start and shut off. Two weeks later four of my Coil packs got fried. Is there any connection with these symptoms and the spliced O2 SENSOR WIRES?

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  • Cars & Trucks Master
  • 2,621 Answers

Perhaps if you had bothered to tell us year, make, model we could have looked at the wiring diagrams to see if there's a common circuit.

Posted on Jul 23, 2017


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  • 2 Answers

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Posted on Jan 02, 2017

  • 17 Answers

SOURCE: o2 sensor wiring diagram

A new 02 sensor will come with new wires and connector. If not get back with me I think there is a repair kit for that problem.

Posted on Jun 01, 2009

  • 21 Answers

SOURCE: Rough Idle on start up: faulty O2 sensor?

try coolant temperature sensor

Posted on Aug 19, 2009

  • 64 Answers

SOURCE: 95 dodge Neon. Crank but wont start. I Changed the

had same problem. neons are bad for the gas filler tube rusting out. there has to be pressure in the tank for the car to run.check and see if yours is rusted out or hole in it somewhere.

Posted on Mar 30, 2010

  • 3113 Answers

SOURCE: I have a 2003 silverado

Pull the vac hose going to fuel pressure regulator and see if it has fuel in it. If it does replace it. Just fixed one with multiple misfire codes.

Posted on Feb 05, 2011

SOURCE: I have a 2002 Chevy

Not the fuel filter

More like a vacuum leak

Posted on Apr 13, 2011

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Po136-o137 says change 02 sensor on bank 1 sensor2 I did but engine light is still on 2004 chevy tahoe

code p 0136 refers to heated oxygen sensor (HO2S) 2 bank 1 ---circuit malfunction===causes ---heating inoperative ---wiring---HO2S--- ECM
also refers to oxygen sensor (O2S0 2 bank 1---circuit malfunction===causes --- wiring---O2S ---ecm
it also refers to heated oxygen sensor (HO2S) 2 bank 1 ---no signal===causes ---wiring --- HO2S---
code p 0137 refers to HO2S 2 bank 1 ---low voltage -===causes --exhaust leak---wiring short to ground ---HO2S--- ECM
it also refers to O2S 2 bank 1---low voltage ===causes exhaust leak---wiring short to ground ---O2S ---ECM
to set you up here-- there are 4 oxygen sensors in the system
2 are heated oxygen sensors (HO2S) on in each exhaust manifold or exhaust pipe before the cat converter and
2 oxygen sensors (O2S) -- one in each exhaust pipe after the cat converters
heated oxygen sensors have 4 wires and O2S sensors normally only 2 wires
it is more that possible that you changed the wrong sensors and in the process damaged the delicate wires with the incorrect spanner being used

Jul 25, 2016 | 2004 Chevrolet Tahoe

1 Answer

How many o2 sensors on a 99 Cadillac catera

Four .
Heated Oxygen Sensor (HO2S Bank 1 Position 1)
Located in RH front pipe of the exhaust catalytic converter
Engine Controls Connector End Views in Engine Controls
Heated Oxygen Sensor (HO2S Bank 1 Position 2)
Located in RH rear pipe of the exhaust catalytic converter
Engine Controls Connector End Views in Engine Controls
Heated Oxygen Sensor (HO2S Bank 2 Position 1)
Located in LH front pipe of the exhaust catalytic converter
Engine Controls Connector End Views in Engine Controls
Heated Oxygen Sensor (HO2S Bank 2 Position 2)
Located in LH rear pipe of the exhaust catalytic converter

Sep 21, 2015 | Cadillac Cars & Trucks

1 Answer

Can't locate where oxygen sesors are.

The oxygen sensors are a 4 wire sensor located by the catalyst under your car. If you follow your exhaust manifold down to the exhaust pipe you will see the sensor sticking right out of the exhaust. If your code reads bank 1 sensor 1 its the sensor before the catalyst and bank 1 sensor 2 is after the catalyst.

Sep 15, 2011 | 2000 Mercury Sable

1 Answer

Honda Odyssey 1999 wher is located bank 1 sensor 1

The oxygen sensor for bank 1 sensor 1 is located just behind where the exhaust pipes from the front bank of cylinders and rear bank of cylinders join up. If you look under the car from the front and follow the exhaust pipes, it is the one you can see easily. There are only two oxygen sensors on the car---the one described above is bank 1 sensor 1. The other sensor goes into the side of the catalytic converter. It is bank 1 sensor 2.

Feb 08, 2011 | Honda Odyssey Cars & Trucks

2 Answers

2004 saturn vue v6 sensor 1 bank 1 where is that


Fig. Heated Oxygen (HO2S) location (bank 1, sensors 1 & 2) - 3.5L engine


Fig. Heated Oxygen (HO2S) location (bank 2, sensors 1 & 2) - 3.5L engine

Hope helps.

Jan 28, 2011 | Saturn Vue Cars & Trucks

1 Answer

After turning the ignition key 3 times (without starting ) the screen shows p 152 and p 157 then done;i guess they mean problems in engine i want to know what are these problems...

Hi, these codes relate to your passenger side oxygen sensors. The first thing I would do is check the wiring on these sensors to make sure it hasn't come loose and melted its insulation on a hot pipe. I would also check the connections at the sensors to make sure the connectors are not loose. Repair any suspicious connectors or wires. While under the car, I would start it and check for an exhaust leak at the flage between the exhaust pipe and manifold. Repair any leaks. If all that was good, I would check the wires with an ohmmeter. To do this, disconnect the connectors and check the continuity of each wire from the connector at the sensor to the PCM. Disconnect the battery before taking the connector off the PCM. When testing the wires, there should be zero ohms from one end to the other, and each wire should have infinite ohms to chassis or engine ground. If the wires are all good, I would replace the sensors. Please let me know if you have questions and thanks for using FixYa.

P0152 Heated oxygen sensor (HO2S) 1, bank 2 - high voltage
Possible causes: Wiring short to positive, HO2S, ECM

P0157 Heated oxygen sensor (HO2S) 2, bank 2 - low voltage
Possible causes: Exhaust leak, wiring short to earth, HO2S, ECM



Jan 21, 2011 | 2000 Jeep Grand Cherokee

1 Answer


Welcome to

The upstream oxygen sensor is typically found on the exhaust manifold that is bolted to the engine block. It may be as far up on the exhaust as the the manifold piping located in the front of the engine under the hood. The sensor looks like a plug sticking out of the exhaust piping and will be the only plug inserted into the exhaust system.


Removal of the oxygen sensor is easier when the engine temperature is above 48CC


' Handle the oxygen sensors carefully in order to prevent damage to the component.

Keep the electrical connector and the louvered end free of contaminants. Do not use

cleaning solvents on the sensor. Do not drop or mishandle the sensor.


Numbers in ten in parenthesis correspond to numbered components in image.

1. Raise and support the vehicle.

2. Disconnect the sensor harness connector.

3. Remove the oxygen sensor.

Bank 1 Sensor 2(1)

Bank 1 Sensor 1(2)

A Bank2Sensorl(3)

A Bank2Sensor2(4)


Important: A special anti-seize compound is used on the oxygen sensot threads. The new

service sensors should have the compound already applied to the threads. Coat the

threads of a reused sensor with anti-seize compound P.N 5613695 or the equivalent.

1. Install the oxygen sensor.

Bank 1 Sensor 2(1)

A Bank sensor (2)

A Bank2Sensorl (3)

A Bank2Sensor2 (4)

Important: Make sure that all of the harness retaining clips are intact. The harness

must not contact any of the hot exhaust components. The HO2S pigtail has white

tape at the intervals, indicating the proper location of each retaining clip. When

connecting the sensor pigtail to the harness, ensure that the connector seal is

crushed uniformly all the way around between the connectors.

2. Connect the sensor harness connector.

3. Lower the vehicle


Thank you for using
Regards, Lee Davidian

Nov 05, 2010 | 1998 Cadillac Catera

2 Answers

P0154 code and p01153

both codes point to the oxygen sensor on bank 2 sensor 1 ..
that would explain the rough running also .. the engine will default to a rich condition ...

p0154 indicates no activity on bank 2 sensor 1 oxygen sensor
p01153 is showing "low switching" for bank 2 sensor 1 oxygen sensor ...

there may be a wiring pigtail coming from the sensor. that plugs into another connector a few inches away .. check that connector for damage or corrosion .. if its ok then you likely need a new oxygen sensor ..

its not a good idea to continue driving with this condition since it will eventually damage the catilytic converter. that is probably getting very hot now with the extra load of fuel ..

Jul 05, 2010 | 2002 Chevrolet Avalanche

1 Answer

Where Are The sensor Banks On The 2004 GC

Grand Cherokee oxygen sensor locations for 4.0 and 4.7 engines



Four wires (circuits) are used on each O2 sensor:

  • 12–volt feed circuit for the sensor heating element
  • Ground circuit for the heater element
  • Low-noise sensor return circuit to the PCM
  • Input circuit from the sensor back to the PCM to detect sensor operation

O2S Sensor removal Never apply any type of grease to the oxygen sensor electrical connector, or attempt any soldering of the sensor wiring harness.
1. Raise and support vehicle.
2. Disconnect O2S pigtail harness from main wiring harness.
3. If equipped, disconnect sensor wire harness mounting clips from engine or body.
CAUTION: When disconnecting sensor electrical connector, do not pull directly on wire going into sensor.
4. Remove O2S sensor with an oxygen sensor removal and installation tool.

02S Sensor installation
Threads of new oxygen sensors are factory coated with anti-seize compound to aid in removal. DO NOT add any additional anti-seize compound to threads of a new oxygen sensor.
1. Install O2S sensor. Tighten to 22 ft. lbs. (30 N·m) torque.
2. Connect O2S sensor wire connector to main wiring harness.
3. If equipped, connect sensor wire harness mounting clips to engine or body. When Equipped: The O2S pigtail harness must be clipped and/or bolted back to their original positions on engine or body to prevent mechanical damage to wiring.

Hope thats help (remember comment and rated this).

Apr 29, 2010 | 2004 Jeep Grand Cherokee

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