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Signs of bad oxygen sensor - Cars & Trucks

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Rough running engine, poor gas mileage, poor idling and excessive emission.

Posted on May 03, 2013

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Posted on Jan 02, 2017

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SOURCE: 2000 chevrolet silverado shows bad oxygen sensor replaced still misses bad

SOUNDS LIE YOU NEED TO REPLACE THE SPARK PLUGS AND IGNITION WIRES9sparkplug wires. have they been replaced?

Posted on Apr 11, 2012

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Does cleaning oxygen sensor clears p0154 fault


code p 0154 refers to heated oxygen sensor (HO2S) 1 bank 2 --no activity detected===causes ---wiring---HO2S--ECM
it also refers to oxygen sensor(O2S) 1 bank 2 no activity detected ===causes --- wiring )2S---ECM
the HO2S is the sensor in the manifold before the cat converter and the O2S is after the cat converter
they can be cleaned in vinegar but they would be showing signs of activity so in this case it is broken wires , bad connections of faulty sensors

Sep 15, 2016 | Cars & Trucks

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There's a new answer to your Jeep 2008 Patriot question! Author image Bogdan Odwazny wrote: The code is po420? This was your reply to my first question some time ago. The answer is YES the c


EOBD II Error Code: P0420
Description:
Catalytic Converter System, Bank 1 - Efficiency Below Threshold
Possible Causes:
- Leakage in Intake and/or Exhaust System.
- Catalyst faulty.
- Oxygen Sensor(s) faulty.
- Oxygen Sensor(s) Control faulty.

Solutions:
- Check Intake and Exhaust System for Leaks.
- Check Catalyst.
- Check Oxygen Sensor(s).
- Check Oxygen Sensor(s) Control.
- Perform Oxygen Sensor(s) Aging Check.
Hope that works.

Dec 03, 2014 | 2008 Jeep Patriot

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Signs of bad oxygen sensor


could be a fouled plug or bad plug wire.

Mar 19, 2014 | 1991 Oldsmobile Cutlass Supreme

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Codes p0054 p0141 p0036


code p0054 is
Possible causes - Faulty Heated Oxygen Sensor Bank 1 Sensor 2
- Heated Oxygen Sensor Bank 1 Sensor 2 harness is open or shorted
- Heated Oxygen Sensor Bank 1 Sensor 2 circuit poor electrical connection
When is the code detected?Heater current requirements too low or high in the heated oxygen sensor (HO2S) heater control circuit Symptoms- Engine Light ON (or Service Engine Soon Warning Light)
code p0141 is O2sensor heater circuit malfunction( bank one sensor 2)
there is chance that wire from that sensor is touching,part of your exhaust system,and either is open or shorting to ground

code p0036
036 - HO2S Heater Control Circuit Bank 1 sensor 2check the wire from the sensor for the sign cut or melting,and change the sensor

Apr 18, 2013 | 2006 Chevrolet Suburban 1500

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Car was running then it stopped starting it turns over fine but theres no sign of a spark


according to this

http://www.acuralegendwiki.org/index.php/G2:_FAQ:_Error_Codes_And_Definitions

41 Left Heated Oxygen Sensor Heater 42 Right Heated Oxygen Sensor Heater
and

15 Ignition Output Signal

So you have a couple problems. The car won't start because more than likely the ignition switch has gone bad and needs replacing.

The O2 sensors will cause your CEL to be on and these will need to be replaced as well.

Feb 07, 2013 | 1993 Acura Legend

2 Answers

Poor gas mileage


Check Oxygen sensors. There are 2 of them and not very costly. should be $20-25 each. But if oxygen sensors are bad, you should have 'Chek Engine' sign on. Do you get Check Engine Sign ?

Aug 14, 2012 | 2002 Buick Century

1 Answer

O2 sensor wire connections.my original o2 sensor adaptor got melted by my exaust,so it was cut off the original wiring harness which had 4 wires which are red/white, orange,grey/white and grey. But the...


Ford Explorer is equipped with two oxygen sensor positioned on the exhaust manifold. Its necessary to replace the oxygen sensor at the first sign of failure. You can get all necessary details about o2 sensor at http://www.wholesalesensors.com/ford-oxygen-sensor/

Jun 23, 2011 | 2003 Ford Explorer

2 Answers

Check engine sign appeared on my 2001 avalon , code error p1155, please advise


Appears it is an Oxygen sensor error, they are located in the exhaust system, in the v6, that code indicates the second bank (but unsure which bank that is) Ideally you need to take the car in for service, or at least inspect the Oxygen sensors, the code indicates that teh heater element has failed.

May 06, 2011 | 2001 Toyota Avalon

2 Answers

My 2002 hyundai accent 1.5 liters will stall at a stop sign or red light. it won't restart for at least 15 minutes, then die out about a half mile down the road (on a bad day). the car sounds fine when...


This sounds like an O2 sensor problem. These sensors regulate the oxygen into the engine, when they go bad, the engine can't breathe and therefore the car will not function right. If there is no oxygen, internal combustion can be a difficult task for a car. I would see if you could get those sensors replaced and you might be back in business. Good luck.

Sep 19, 2010 | Hyundai Accent Cars & Trucks

1 Answer

1994 saturn sl 2 oxygen sensor light came on replaced it. now the code is saying the upstream oxygen sensor input volage above normal operating range???? and theres a bad odor coming from car???


It could be the oxygen sensors but when you said there is a bad odor I would bet that you have a bad EGR valve. It will send a code for the oxygen sensor if there is problems with the EGR valve. A lot of the time the smell is like rotten eggs when you have a bad EGR.

Sep 29, 2009 | 1994 Saturn Sl

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