Question about 1999 Chevrolet Silverado 1500

2 Answers

Code p0141 02 Sensor Heater Circuit Malfunct Bank #1 Sensor2

Where is the Bank #1, Sensor #2 02 Sensor located on a 1999 Chevy c1500 pickup truck with a 350 (5.7) engine with automatic transmission? Thanks in advance.

Posted by on


2 Answers

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points


    An expert that got 10 achievements.


    An expert that got 5 achievements.


    An expert whose answer got voted for 500 times.

  • Master
  • 1,857 Answers

After the catalytic converter on the driver side in the exhaust pipe.

Posted on Jul 07, 2010

Testimonial: "Awesome info. Thanks!"

  • Level 2:

    An expert who has achieved level 2 by getting 100 points


    An expert that got 10 achievements.


    An expert that got 5 achievements.


    An expert who has written 3 tips or uploaded 2 video tips.

  • Expert
  • 117 Answers

You can doublecheck this at any library's computer because they have a nationwide license for the sw for all cars and makes and models. But offhand, they are usually down past the exhaust manifold. Some under the car. Some can have two for dualexhaust which could be yours. If it's never been replaced before now is a good time. They used to say replace them every 79k, IIRC.

Posted on Jul 14, 2010


1 Suggested Answer

  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi there,
Save hours of searching online or wasting money on unnecessary repairs by talking to a 6YA Expert who can help you resolve this issue over the phone in a minute or two.

Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.

Here's a link to this great service

Good luck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

1 Answer

Where is 02 senor heater code p0135 located for2003 Toyota highlander v6

That code refers to a fault in the circuit for Oxygen Sensor Heater Circuit (Bank No. 1 Sensor No. 1).
Bank 1 is the same bank where the #1 engine cylinder is located, so the passenger side and the sensor #2 is the second O2 sensor back and is usually found after the catalytic converter,

Dec 24, 2017 | Toyota Cars & Trucks

1 Answer

Code p0135 on 2004 Chevy impala 3.4 lt v6. Which oxygen sensor is this

code p 0135 refers to heated oxygen sensor (HO2S) ) 1 bank 1, heater control---circuit malfunction====causes --fuse--wiring--HO2S--ECM
heated oxygen sensors are located in the exhaust manifold or exhaust pipe before the cat converter bank 1 is closest to the fire wall
use the proper sensor tube spanner as the wires are delicate and easily broken when removing or installing the sensor

Feb 11, 2017 | Cars & Trucks

2 Answers

Trouble code p0134, p0135 p0053 p0030

P0134 - O2 Sensor Circuit No Activity Detected Sensor 1 Bank 1
P0135 - O2 Sensor Heater Circuit Malfunction Bank 1 Sensor 1
P0053 - O2 Heater Resistance Bank 1 Sensor 1
P0030 - O2 Heater Control Circuit Bank 1 Sensor 1
You need to replace the O2 Sensor Bank 1 Sensor 1
Carquest can help you get the correct part and help you locate it.

Apr 01, 2014 | 2006 GMC Envoy Xl

1 Answer

My2000 mercury cougar has code 156&161 what could be the problem

error codes p0156 (02 sensor circuit malfunction) ( bank 2 sensor 2) &
p0161 (02 sensor heater circuit) (bank 2 sensor 2 ) are related. The faulty heater in the sensor will cause the PO156 to set as well. Bank 2 sensor 2
will be located on the drivers side after the converter.

Jul 11, 2012 | 1999 Mercury Villager

2 Answers


Sounds like there is an issue with the heater on the bank 1 sensor 1 O2 sensor. Bank one is the same side of the engine as the number one cylinder and sensor one is always before the catalytic converter. Check for battery voltage on the black with yellow wire with the key on. There should be twelve volts. Check the heater circuit of the O2 sensor with an ohm meter. Unplug the O2 sensor connector and measure resistance on the sensor side of the connector that the blue with black and black with yellow wire go to. Off the top of my head it should be around 14 ohms. You can confirm this by checking the heater circuit on the bank 2 O2 sensor. If there is voltage and the heater circuit doesn't ohm out than replace the O2 sensor. Let me know if you have any questions and I'll do my best to answer them. Thank you for using!

I’m happy to assist further over the phone at

Jan 20, 2012 | Toyota Cars & Trucks

1 Answer

Where is the bank2 sensor 1 located on the c1500 2wd automatic trans- pickup truck?

sensor 1 is the first 02 sensor in the 2 is the side of the motor that cylinder #1 is NOT on,in this case bank 2 would be on the passenger side(right side) of the motor.which means the first 02 sensor in the exhaust on the passenger side of the motor

Mar 10, 2011 | 1997 Chevrolet C1500

3 Answers

1999 chevelet suburn i need to no what this code means po161

P0161=O2 Sensor Heater Circuit Bank 2 Sensor 2,
oxygen sensor after converter on passenger side.

Dec 25, 2009 | 1999 GMC Jimmy

1 Answer

Code po141 heater circut sensor/where do i find this sensor? where is bank 1

code is not for heater circuit,
code p0141=O2 Sensor Heater Circuit Bank 1 Sensor 2
that means its an oxygen sensor located in bank 1 which is the drivers side,sensor 2 means its the downstream sensor after the convertor

Nov 15, 2009 | 1998 Pontiac Grand Am

1 Answer

Knock sensor location

if its a cmfi or csefi injection system theres 2 knock sensors 1 on each side of engine block,1 under the left bank of block,the other under right bank of block,tbi inj. theres 1 in front of starter.

May 27, 2009 | 1994 Chevrolet C1500

Not finding what you are looking for?
1999 Chevrolet Silverado 1500 Logo

1,847 people viewed this question

Ask a Question

Usually answered in minutes!

Top Chevrolet Experts


Level 3 Expert

80668 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22326 Answers

Ronny Bennett Sr.
Ronny Bennett Sr.

Level 3 Expert

6927 Answers

Are you a Chevrolet Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides