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Need to know where Ho2s21 is bank 2 sensor 1 - 1500 Chevrolet Cars & Trucks

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6ya6ya
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Posted on Jan 02, 2017

  • 18 Answers

SOURCE: Having trouble bank 1 @ 2 sensors dont know which

many o-2 sensors go bad after about 60,000 miles they will cost you gas mileage,they tell computer engine is lean and causes more fuel to be dumped in when not needed--go to autozone if it is 96 and above they will scan it free give u possible causes and explanations! (former autozone manager) most fords o2 cost from 50-80 dollars jsmiles4012

Posted on Mar 04, 2009

emissionwiz
  • 75797 Answers

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

ZJLimited
  • 17970 Answers

SOURCE: Where Are The sensor Banks On The 2004 GC

Grand Cherokee oxygen sensor locations for 4.0 and 4.7 engines

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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.
WARNING: THE EXHAUST MANIFOLD, EXHAUST PIPES AND CATALYTIC CONVERTER(S) BECOME VERY HOT DURING ENGINE OPERATION. ALLOW ENGINE TO COOL BEFORE REMOVING OXYGEN SENSOR.
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

saailer
  • 1868 Answers

SOURCE: FORD F150 4.6 L Engine

Hello! Please send the year of the vehicle and I'll send an action plan to solve the problem...Do you have a mulitimeter and a wee bit of experience using it? Included in the plan will be test procedures (not difficult) which require a meter.....

Guru....Saailer

Posted on Dec 31, 2010

  • 89 Answers

SOURCE: 2006 ford fusion 6 cyl,

its maybe the promary oxygen sensor..thanks

Posted on Apr 04, 2011

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1 Answer

I have 1994 ford Thunderbird xl,ran a test it said ho2s21 switch-sensor rich, p0001,oasis403400, what does this mean?


Your 0/2 for bank 2 is signalling rich mixture and you need to determine why. This may be beyond your expertise.

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How do you know which sensor it is by the number HO2S21


the 2 represents bank 2, and the 1 represents sensor 1

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Where is a HO2S21 sensor located on a 99 mecury cougar?


Its saying bank 2 sensor 1 Bank 1 is the same side of the motor as the number one cylinder. Bank 2 is the other side of the engine. Sensor 1 is always before tha catalytic converter. Sensor 2 is always after the catalytic converter. Let me know if you have any questions and I'll do my best to answer them. Thank you for using FixYa.com!

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Ihave detected an error code P1647 and P1111 on my jaguar x type. What does they mean or what could be the problem?


Code P1347 can be set for either a short to ground, short to power, high resistance or open circuit on Oxygen Sensor for bank 2, (HO2S21). Bank 2 is on your right when standing at the front of the engine facing the crank, and this sensor is the first in line; before the converters.
Code p1111
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1. Open circuit to IAI-Check connector
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3. Open Circuit Condition

Hope this helps

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Sears did a computer eval on our car and gave us codes only


P0135--OXY SENSOR HEATER CIRCUIT(bank 1 sensor 1)
P0141--OXY SENSOR HEATER CIRCUIT(bank 1 sensor 2)
P0155--HEATED OXY SENSOR HEATER CIRCUIT(bank 2 sensor 1)
P0161--HEATED OXY SENSOR HEATER CIRCUIT(bank 2 sensor 2)
P01132--LACK OF HO2S11 SWITCH--SENSOR INDICATES RICH
P01152--LACK OF HO2S21 SWITCH--SENSOR INDICATES RICH

Here are the code definitions.hope it helps.

Nov 15, 2008 | 1997 Mercury Cougar XR7

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