Question about 2003 Cadillac CTS

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Where is bank 2 sensor one on a Cadillac CTS?

Posted by leojklo on

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  • leojklo May 09, 2009

    Holy **** Thanks Buddy .... A million

  • Anonymous Mar 14, 2014

    firing order 2.8L. What is the firing order for a Cadillac cts 2.8 ?

  • Yesenia May 24, 2017

    How would I know how the sensor look



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Bank 2 Sensor 1 is on the driver side - follow the right side of the engine down the headers which attaches to the catalytic converter. The o2 Sensor you're asking about (Bank 2 Sensor 1) is before the Catalytic. The o2 Sensor after the Catalytic is Bank 2 Sensor 2. Bank 1 Sensor 1 is on the passenger side as well as Bank 1 Sensor 2.

Posted on May 09, 2009



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I have a 2003 cadillac ccar and my car was throwing smoke out the back I tod it has something to do with the gadgets but I knowrest that there's a sensor broken that runs down it looks like a light bow but is not and seens is just by were I put the oil on the bottom my car started to throw smoke

Posted on May 24, 2017


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SOURCE: where are bank 1 sensor 1, bank 2 sensor 1, bank 1

bank one sensor 1 is the bank of cylinders that number 1 spark plug is located in, bank 2 the other side, this assumes u have a V8, the sensor one location is the sensors that are BEFORE THE CATALYTIC CONVERTER, the sensors referred to as sensor 2 are after the ones AFTER THE CATALYTIC CONVERTER IN THE EXHAUST SYSTEM.

Posted on Apr 28, 2010


ZJ Limited

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SOURCE: 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).

Posted on Apr 29, 2010


ZJ Limited

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SOURCE: Cadillac Catera (1998) Replaced Bank 1 Sensor 1

Are you reset the stored codes? Try it.

Posted on Jul 23, 2010


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SOURCE: 2003 cadillac cts coolant temperature sensor

Increased temperature of the car Cadillac 2003 and the computer asked me to turn off the car and when I opened the radiator cap means and grandmother with a mixture of oil out of the coolant tank in the form of foam for the light beige color

Posted on Nov 04, 2010


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SOURCE: 2003 cadillac cts 3.2 liter..rough idle, scan tool

Did you ever find a solution to this? I am having the same issue on 2,4,6. I have replaced the coils. checked the intake for vacuum leaks. I am lost here let me know if you find anything and I will do the same.

Posted on Jan 24, 2011

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1 Answer

Knock sensor location on 2006 cadillac cts

Which engine 2.8 , 3.6 , or 6.0 L ? 3.6 has two - bank 1 an bank 2 one on each side of the block . Looking at the repair manual all three engines have two an located in the same place , one on each side of the engine block . You will need to jack up the vehicle an crawl under it to see them .

Oct 28, 2016 | Cadillac Cars & Trucks

2 Answers

How many crankshaft sensors are there on a Cadillac CTS 2007?

One crank sensor. It needs to go on a scanner. Both sensors are probably OK. Your problem is most likely the timing chains or guides. If ti were the crank sensor, it wouldn't start. Cam sensor would throw a cam code. Correlation means the crank and cam are not in sync. If you have VVT, it could be the actuator.

Sep 30, 2016 | 2007 Cadillac CTS 3.6L

1 Answer

Hi, I am getting Faulty codes P0036, P0056, P0141, P0161 in reference Bank 1 and Bank 2 for sensors 2 on 2003 CTS.I was told the sensors where changed but codes still appear?

If the sensors were replaced an DTC'S come back has to be a wiring problem or PCM ,
The ECM detects that the HO2S heater low control circuit voltage is between 2.6-4.6 volts when the heater is commanded OFF, indicating an open HO2S heater circuit.
Is the fuse open?
All four codes refer to the heating element circuit ! there is a relay in the under hood fuse box that supplies B+ voltage to the O2 sensor heating elements . I would change that or test the relay , videos on you tube on testing relays .
MAIN Relay
LO SPEED Relay, HI SPEED Relay, S/P FAN Relay, PRE O2 Fuse, IGN-1 Fuse, ECM Fuse, POST O2 Fuse, and INJ Fuse
Also check
POST O2 Fuse
10 A
HO2S Bank 1 Sensor 2 and HO2S Bank 2 Sensor 2
PRE O2 Fuse
10 A
Heated Oxygen Sensor (HO2S) Bank 1 Sensor 1 and HO2S Bank 2 Sensor 1

Jul 23, 2016 | 2003 Cadillac CTS

1 Answer

O2 sensor fuse location

There are two locatons for the fuse and relay llocations one is under the hood on the passenger side and the other is under the back seat!!!

Mar 26, 2014 | 2003 Cadillac CTS

1 Answer

Wondering where is bank 1 sensor 2 located on a 09 Cadillac cts

Bank one is the side with cylinder one, and sensor two is after the catalytic converter.

Sep 01, 2013 | 2010 Cadillac CTS

1 Answer

I have a problem with my 2003 cadillac cts code po141 i have replaced the o2 sensor on the passenger side before the cat but i still have the same problem

You do realize you have 4 o2 sensors on the vehicle? Obtaining a reading from its computer (failure code) will not tell you exactly which sensor is faulty. In fact, no device currently that I know of will give you an error code to exactly which o2 sensor is at fault. You may have replaced a good sensor with a new sensor and hopefully you didn't throw the old sensor out. I would put the old sensor back in and start performing the process of elimination method with the known, new sensor. Currently, you are 25% there (2 banks, 2 o2's per bank).

Apr 12, 2011 | 2003 Cadillac CTS

1 Answer

Need to find the location of bank 2 sensor 2 o2 sensor on 2006 cts


Oct 13, 2010 | 2006 Cadillac CTS

1 Answer

My 04 cts has two codes po158 an po161

both pertain to the heated o2 sensor// bank 2 -sensor 2 -their is a malfunction with the heated sensor behind the cat converter either wiring problem or bad sensor--check wiring and or sensor for problem

Dec 17, 2009 | 2004 Cadillac CTS

1 Answer

I have a 2005 cts and the heat sensor is out bank 1 sensor 2, can i still drive it

Yes u can drive it, all this will do is lower fuel economy and turn the check engine light on, it is not a heat sensor it is a heater circuit you refer to for the O2 sensor

Aug 12, 2009 | 2005 Cadillac CTS

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