Question about 2001 Oldsmobile Silhouette

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Where is the bank 1 O2 Sensor on the 2001 Olds Silhouette? My CEL code was Bank 1 O2 Sensor issue. I have the sensor but I cant' find the pre-Cat Sensor. Can you help?

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  • jared_segrav Mar 04, 2009

    Is there an O2 Sensor on the front of the engine also? Or simply one pre-cat and one post-cat?

  • Anonymous Mar 13, 2014

    2006 e350 o2 sensor1 bank 1. Is it passenger side or driver side. Also CEL turns on intermittently

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It is on the back of the exhaust manifold on the back of the motor by the fire wall

Posted on Mar 04, 2009

  • mike loshbough
    mike loshbough Mar 04, 2009

    no on the back and after the converter. thanks


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1 Answer

2002 Subaru Forester P0136 see P2270 P2271 intermittent idling fluctuation and acceleration hesitation


Is the wiring good going to the O2 sensors? Maybe just look the car over and see if you have any bad grounds. They can do weird things. Could be a bad ICU.

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Location of o2 sensor bank 1 sensor 1, code p0135


Bank 1 is always the same side of the motor as the number one cylinder. Bank two is the other side.

Sensor 1 is always before the cat. Sensor 2 is always after the cat.

Since that year only has one O2 before the cat it would be called bank1 sensor 1. It is located before the cat in the exhaust manifold on the back side of the engine (firewall side).

Apr 14, 2011 | 2001 Chevrolet Venture

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Bmw code 29a8 power management failure and l cant understand the meaning


BMW outputs codes in Hex format. The tool then reads the code and it may translate it to its own format. Some 29A.. code definitions here:

29A0 Lambda Sensor Post Cat Bank 2 Signal
29A1 Lambda Sensor Post Cat Bank 2 Signal
29A2 Lambda Sensor Pre Cat Bank 2 Signal
29A3 Lambda Sensor Pre Cat Bank 2 Signal
29A4 Lambda Sensor Heater Pre Cat Bank 1 Activation
29A5 Lambda Sensor Heater Pre Cat Bank 2 Activation
29A6 Lambda Sensor Pre Cat Bank 1 Signal
29A7 Lambda Sensor Pre Cat Bank 1 Signal
29A8 Power Management Network Failure
29A9 Power Management Battery
29AB Torque Request via CAN
29AE Tank Cap

Code 29A8 i
t's a NETWORK management fault, related with tne main computer. Will need to visit BMW dealer to delete or reset it.

I hope helps with this.

Mar 18, 2011 | 2009 BMW 5 Series

1 Answer

Code 29a8 power management failure, ldont understand the meaning


BMW outputs codes in Hex format. The tool then reads the code and it may translate it to its own format. Some 29A.. code definitions here:

29A0 Lambda Sensor Post Cat Bank 2 Signal
29A1 Lambda Sensor Post Cat Bank 2 Signal
29A2 Lambda Sensor Pre Cat Bank 2 Signal
29A3 Lambda Sensor Pre Cat Bank 2 Signal
29A4 Lambda Sensor Heater Pre Cat Bank 1 Activation
29A5 Lambda Sensor Heater Pre Cat Bank 2 Activation
29A6 Lambda Sensor Pre Cat Bank 1 Signal
29A7 Lambda Sensor Pre Cat Bank 1 Signal
29A8 Power Management Network Failure
29A9 Power Management Battery
29AB Torque Request via CAN
29AE Tank Cap

Code 29A8 i
t's a NETWORK management fault, related with tne main computer. Will need to visit BMW dealer to delete or reset it.

I hope helps with this.

Mar 17, 2011 | 2009 BMW 5 Series

1 Answer

Black smoke.ihave checked the plugs and i have 4 black ones and 4 white ones


Sounds like you may have and O2 sensor problem . or a fuel delivery problem. Check your fuel presure to make sure it is with in specs I think some where around 55 - 60 lbs running at idle . You will need to have the engine control module scaned to see what codes you may have stored .doing this will lead you in the right direction for a repair , if you have O2 sensor codes start with seeing which ones are working or not . I think there are 4 on your truck 2 on each bank .. bank 1 sensor 1 bank 1 sensor 2 bank 2 sensor 1 bank 2 sensor two . bank one is the side with number 1 cylinder in the firing order the bank 1 sensor 1 or bank 2 sensor 1 are the sensor befor the cat converter and the other sensor are after the cat (pre cat and post cat )

Mar 04, 2011 | 2004 Chevrolet Silverado

1 Answer

My 2002 olds silhouette had a fault code for bank 1 oxygen sensor #2.So I changed the oxygen after the converter and the fault code is still there.I did un-hook the battery to clear the code.


Bank 1 sensors are all the o2 sensors before the converter. Bank 2 sensors are all after the converter.On bank 1 there is 1 for each side of the exhaust manifolds. Bank 1 sensor 1 is on the side ot the engine that #1 cylinder is on. Bank 1 sensor 2 is on the other side. On front wheel drive GM vehicles sensor 1 is in front,2 is in back, but stiil in front of catalytic converter.

Jun 13, 2010 | 2002 Oldsmobile Silhouette

2 Answers

2001 Olds Alero oxygen sensor bank 1 P0135


p0135 indicates bank 1 sensor 1 which is before the cat.

May 22, 2010 | 2001 Oldsmobile Alero

1 Answer

Where is the location of the bank one sensor one o2 sensor on my 2003 chevy suburban


bank 1 on a chevy is on the drivers side youll have 4 O2 sensors sensor 1 bank 1 is on the engine side of the cat converter sensor 2 bank 1 is after the cat converter (drivers side )
bank 2 is on the passenger side sensor 1 is pre cat sensor 2 is post cat converter

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2 Answers

Where is the O2 Sensor located on 2003 Ford Focus? Check Engine Light is on and trouble shooter device says the problem is in the O2 Sensor Heater Circuit, but where is it located.


The code will tell you which O2 sensor it is.
The code will point to either bank 1 sensor 1; bank 1 sensor 2; bank 2 sensor 1; bank 2 sensor 2.

From what I remember with a focus, it should only have 2 sensors, sensor 1 will be located before the cat, and sensor 2 will be located after the cat.

Oct 08, 2009 | 2003 Ford Focus

1 Answer

Where is Bank 1 Sensor 1 on an 2003 Oldsmobile Sillohuette?


"Bank one" is the bank of cylinders that starts with the #1 cylinder. In this case this will be the bank of three cylinders that is closest to the firewall. Sensor #1 refers to the O2 sensor that is between the engine and the catalytic converter. So the Bank 1, sensor 1, will be the O2 sensor that is mounted in the rear exhaust manifold or tubing just before the cat.

May 16, 2009 | 2003 Oldsmobile Silhouette

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