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Check engine light - 2000 4runner P171 code indicated Bank 1 Sensor 2 Replaced the rearmost O2 sensor and light came back on after reset. What next? front sensor?

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6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

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ewashmidas
  • 362 Answers

SOURCE: o2 sensor bank 2 sensor 2

Bank 2 will the the passenger side or right side and sensor 2 is the O2 sensor behind the catalytic converter.

Posted on Jan 28, 2009

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Murphybanton
  • 2004 Answers

SOURCE: vsc vsc off check engine

Disconnect your battery for 10 minutes after which you connect it back the lights should go off. Don't report to toyota. Nigerian style!

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Posted on Mar 21, 2009

  • 112 Answers

SOURCE: 2002 Pontac Grand Prix GTP P0171 code engine stumbling at times

Bank 1 is the frt side exhaust manifold (did they say bank 1 sensor 1?),you can start by replacing that sensor,i would check the intake for leaks ,the gm 6cly. are known for bad intake gaskets,you will see oil coming out form the frt or rear of the intake,also check your atifreeze overflow bottle for bronwish sludge,which means that the oil is mixing with the antifreeze.A leaking intake could cause that lean condition.

Posted on Mar 29, 2009

USfalcon
  • 175 Answers

SOURCE: O2 Sensor problem

this pic with be the fix ya
bcc112d.gif

Posted on Apr 10, 2009

  • 55 Answers

SOURCE: location of bank 1 sensor 1 o2 sensor

Should be in the manifold on the back side closest to the firewall.

Posted on May 04, 2009

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1 Answer

How to reset check engine light?


First replace the bank 2 sensor 1 O2 sensor. p0051 is that sensor heater circuit. These codes are always the O2 sensor, unless you see the wires are melted against the exhaust manifold. Once replaced the light will eventually go out. A code reader or scanner will turn it off.

Aug 07, 2016 | Cars & Trucks

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

Good afternoon..... I've been on here before My question is this.....I have a 2006 nissan altima 2.5s and the check engine light us on .....I replaced the O2 sensor by the cat. And u cleared the code and...


bank 1 sensor 2 is not the upper sensor, it is behind the cat converter, replace it, disconnect the battery and go drive it to somewhere to have the codes cleared. It will relearn the fuel table to run properly

Aug 10, 2014 | Cars & Trucks

1 Answer

Volvo o2 sensor what is B1 S3 mean


B1S3 means bank one, sensor 3- sensor 3 is the rearmost oxygen sensor, after the catalytic converter. Bank 1 refers to the side or bank of the engine where cylinder number 1 is located. On a v-style engine, bank one is the side with number 1 cylinder on it, and bank two is the opposite side or bank. If you have dual exhaust, B1S3 is the sensor after the cat on the side where bank one exhaust is.

Mar 01, 2014 | Volvo S40 Cars & Trucks

1 Answer

P0030 after 02 sensor replacement


check the under hood fuse box there is a fuse in there marked sensor it sends power to the o2 sensors

Sep 29, 2013 | 2004 Kia Rio

2 Answers

1999 Chevy silverado 5.3 engine setting codes p171 p174 already replaced mas air flow and checked for leaks


oxygen sensor failure
P0171 System too Lean (Bank 1) - Read Our Article On Oxygen Sensor Codes For Help With This Generic Check Engine Light Code
P0174 System too Lean (Bank 2) - Read Our Article On Oxygen Sensor Codes For Help With This Generic Check Engine Light Code
hope this is a bit of a push in the right direction ...

Feb 02, 2010 | 1999 Chevrolet Silverado 1500

1 Answer

My car indicates check engine sigh with following two codes 1: p0139 2: p0140


Hi Garcha,

Both codes relate to O2 Sensor # 2

Code P0139: O2 Sensor Circuit Slow Response - Bank 1, Sensor 2
Code P0140: O2 Sensor Circuit No Activity Detected - Bank 1, Sensor 2

A faulty O2 sensor will mean incorrect signals will be sent to the EFI computer, causing erratic engine running.


Cheers,


"If this has helped you in any way, please rate this solution" :-)



Jan 27, 2010 | Hyundai Motor 2002 Elantra

1 Answer

2002 Pontac Grand Prix GTP P0171 code engine stumbling at times


Bank 1 is the frt side exhaust manifold (did they say bank 1 sensor 1?),you can start by replacing that sensor,i would check the intake for leaks ,the gm 6cly. are known for bad intake gaskets,you will see oil coming out form the frt or rear of the intake,also check your atifreeze overflow bottle for bronwish sludge,which means that the oil is mixing with the antifreeze.A leaking intake could cause that lean condition.

Mar 29, 2009 | 1998 Pontiac Grand Prix

1 Answer

2002 Alero check Engine light Codes P0132, P0137


Code P0132 is O2 sensor voltage high bank1 sensor 1, P0137 is O2 sensor voltage low bank 1 sensor 2, P1189 indicates a fuel control problem bank 1. It could be either the O2 sensors or a convertor. Could also be intake manifold gaskets. GM had a lot of problems with the lower intake gaskets leaking on the 3.1 and 3.4 engines that was linked to their Dexcool coolant. In fact they just lost a class action lawsuit about it. check with the dealer and see if the intake problem has been taken care of. Hope this helps.

Jan 16, 2009 | 2001 Oldsmobile Alero

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