Question about 2000 Honda Accord

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Have a 99 accord check engine light coming on i replaced oxygen front sensor but light came back on help please

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  • maroneytheon Aug 26, 2008

    I have a 2000 accord. I know on the '00 model after so many miles the light comes on. The reson it comes on i heard was just the honda way of saying CHANGE YOUR OIL. And after i got the oil changed the light stayed on. There is some way of turning it off by holding your trip meter reset button down then turning off your car and pressing trip meter reset button again. I think thats whats wrong with mine but I just can not figure out if you hold it down or press it more than twice. If anyone knows what I'm talking about holla back. or e-mail me at maroneytheonly@yahoo

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1 Answer

Take it 2 a autozone store and ask to check your engine light.... its free.... they gonna tell u whats up....

Posted on Aug 23, 2008

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0420 AND CHECK ENGINE LIGHT STAYS ON


DTC P0420 - Catalyst System Efficiency Below Threshold (Bank 1)
The catalytic converter has an oxygen sensor in front and behind it. When the vehicle is warm and running in closed loop mode, the upstream oxygen sensor waveform reading should fluctuate. The downstream O2 sensor reading should be fairly steady. Typically the P0420 code triggers the Check Engine Light if the readings of the two sensors are similar. This is indicative of (among other things) a converter that is not working as efficiently as it should be (according to specs). It is part of the vehicle emissions system.

You will likely not notice any drivability problems, although there may be symptoms.

A code P0420 may mean that one or more of the following has happened:
Leaded fuel was used where unleaded was called for
An oxygen sensor is not reading (functioning) properly
The engine coolant temperature sensor is not working properly
Damaged or leaking exhaust manifold / catalytic converter / exhaust pipe
******** spark timing
The oxygen sensors in front and behind the converter are reporting too similar of readings

Some suggested steps for troubleshooting a P0420 error code include:
- Check for exhaust leaks at the manifold, pipes, catalytic converter. Repair as required.
- Use a scope to diagnose the oxygen sensor operation (Tip: The oxygen sensor in front of the catalytic converter normally has a fluctuating waveform. The waveform of the sensor behind the converter should be more steady).
- Inspect the downstream heated oxygen sensor (HO2), replace if necessary
- Replace the catalytic converter

One thing to note is that many vehicle manufacturers offer a longer warranty on emissions-related parts. So if you have a newer car but it's out of it's bumper-to-bumper warranty, there still may be warranty on this type of problem. Many manufacturers give a five year, unlimited mileage warranty on these items. It's worth checking into.

Hope this helps; also keep in mind that your feedback is important and I`ll appreciate your time and consideration if you leave some testimonial comment about this answer.

Thank you for using FixYa, have a nice day.

Feb 17, 2012 | 2000 Toyota 4Runner

1 Answer

03 s60 engine code p0133,replacet everything


P0133 - Oxygen Sensor Circuit Slow Response (Bank1, Sensor1)
This involves the front oxygen sensor on Bank 1. This code indicates the engine air fuel ratio is not being adjusted by the oxygen sensor signal or the ECM as expected to do so, or not adjusted as often as expected to do so once the engine is warmed or under normal engine use.

You will likely not notice any drivability problems, although there may be symptoms.

A code P0133 may mean that one or more of the following has happened:
The oxygen sensor is faulty
The wiring to the sensor is broken / frayed
There is an exhaust leak

Possible Solutions:
The simplest thing to do is to reset the code and see if it comes back.

If the code comes back, the problem is more than likely the front Bank 1 oxygen sensor. You will likely wind up replacing it but you should also consider these possible solutions:
Check and fix any exhaust leaks
Check for wiring problems (shorted, frayed wires)
Check the frequency and amplitude of the oxygen sensor (advanced)
Check for a deteriorating / contaminated oxygen sensor, replace if necessary
Check for inlet air leaks
Check the MAF sensor for proper operation

Hope this helps; also keep in mind that your feedback is important and I`ll appreciate your time and consideration if you leave some testimonial comment about this answer.

Thank you for using FixYa, have a nice day.

Feb 15, 2012 | 2003 Volvo S60

1 Answer

2005 Honda accord code p2270 that is ?


DTC P2270: Rear Secondary HO2S (Bank 1, Sensor 2) Circuit Signal Stuck Lean

Is this the only code that is coming up? If so, replacing the Bank 1 Sensor 2 Oxygen sensor should fix it. If there are any other engine/drivetrain/emissions related codes, I would recommend ignoring this code for now and fix the other things first, then retest the vehicle to see if this code comes back.

For more information about locating oxygen sensors and repairing oxygen sensor codes, please review the following article:

Which Oxygen Sensor Is It?

What Else Could Be Wrong?

Sep 28, 2011 | 2005 Honda Accord

1 Answer

1993 Honda accord LX 2dr. my engine light doesn't come on when the engine is running at an idle for a period of time which is good, but when i go down the road for about 3-5 miles the light comes on???...


The service check connector is a BLUE, 2-pin connector located in the area of the right side kick panel. You may have to remove the kick panel to find it. It is normally "taped up" to the wiring harness and should be there unless someone has previously un-taped it and left it "dangling". You can jumper the connector with a paper clip and turn the ignition on to get the check engine light to output flash codes.

The only thing "common" about fixing the check engine light is that you MUST get the fault code so that you will know which of the many circuits monitored by the computer is malfunctioning. When you find out which circuit is malfunctioning, then you must diagnose that circuit to find out why. NOBODY can tell you what to fix or replace without FIRST retrieving the fault code.

1993 Honda Accord was equipped with 1 oxygen sensor. It is located in front of the catalytic converter. There is no second oxygen sensor. Toyota began using downstream oxygen sensors to monitor the catalyst in some of the late 1995 models. (getting ready for mandatory OBDII which began in 1996)

Sep 06, 2011 | 1993 Honda Accord

1 Answer

DTC P0420 on 99 Toyota Corolla Which oxygen sensor to replace- before or after the catalytic converter?


The catalytic converter has an oxygen sensor in front and behind it. When the vehicle is warm and running in closed loop mode, the upstream oxygen sensor waveform reading should fluctuate. The downstream O2 sensor reading should be fairly steady. Typically the P0420 code triggers the Check Engine Light if the readings of the two sensors are similar. This is indicative of (among other things) a converter that is not working as efficiently as it should be (according to specs). It is part of the vehicle emissions system.
Symptoms You will likely not notice any drivability problems, although there may be symptoms.
Causes A code P0420 may mean that one or more of the following has happened:
  • Leaded fuel was used where unleaded was called for
  • An oxygen sensor is not reading (functioning) properly
  • The engine coolant temperature sensor is not working properly
  • Damaged or leaking exhaust manifold / catalytic converter / exhaust pipe
  • Retarded spark timing
  • The oxygen sensors in front and behind the converter are reporting too similar of readings
Possible Solutions Some suggested steps for troubleshooting a P0420 error code include:
  • Check for exhaust leaks at the manifold, pipes, catalytic converter. Repair as required.
  • Use a scope to diagnose the oxygen sensor operation (Tip: The oxygen sensor in front of the catalytic converter normally has a fluctuating waveform. The waveform of the sensor behind the converter should be more steady).
  • Inspect the downstream heated oxygen sensor (HO2), replace if necessary
  • Replace the catalytic converter
One thing to note is that many vehicle manufacturers offer a longer warranty on emissions-related parts. So if you have a newer car but it's out of it's bumper-to-bumper warranty, there still may be warranty on this type of problem. Many manufacturers give a five year, unlimited mileage warranty on these items. It's worth checking into.

May 26, 2011 | 1999 Toyota Corolla

2 Answers

2004 honda accord v6: check light comes and then goes off. Mechanic did hand held computer scan. code reads p2240 and he says oxygen sensor needs cleaning. Please advise, Harry.


hi.
that code means there is a fault at the bank 2 oxygen sensor.
as you stand at the frond of the car and look into the engine bay, the sensor is fitted to the middle of the exhaust manifold nearest to you. disconnect the wires on the plug, and i think it is a 22mm spanner or deep socket to remove it.
there are various proprietary oxygen sensor cleaners on the market, but there is no certainty that this will work. there could be an actual fault with the sensor, or it may be too dirty to clean.

if finances permit, i would recommending changing the sensor as a matter of course.

the ecu fault reading can be reset by removing the battery -ve lead for 30 minutes.
make sure you have the radio code before doing this as you will need to reset this as well.

if you only clean the sensor and the fault reading comes back, then you will have to change the sensor and reset the ecu again.

hope this helps.

Apr 03, 2011 | 2004 Honda Accord

1 Answer

98 Honda Accord "check engine


did you already run an OBD 2 scan?(free at most parts shops)

Nov 21, 2010 | Honda Accord Cars & Trucks

1 Answer

Oxygen sensor codes I have 2 codes PO133 and PO141 says possible defective sensor or faulty HO2S12 or poor connections


Well it could be the wiring too the sensor, a software issue that requires flashing the pcm or the sensor you purchased is not working too the same standards that the old one was. Did you use a one type fit alls 02 sensor that uses the old connector and you have to splice the wires? Read this info...


P0133 - Oxygen Sensor Circuit Slow Response (Bank1, Sensor1)

What does that mean?
This involves the front oxygen sensor on Bank 1. This code indicates the engine air fuel ratio is not being adjusted by the oxygen sensor signal or the ECM as expected to do so, or not adjusted as often as expected to do so once the engine is warmed or under normal engine use.

Symptoms:
You will likely not notice any drivability problems, although there may be symptoms.

Causes:
A code P0133 may mean that one or more of the following has happened:
* The oxygen sensor is faulty
* The wiring to the sensor is broken / frayed
* There is an exhaust leak

Possible Solutions:
The simplest thing to do is to reset the code and see if it comes back.

If the code comes back, the problem is more than likely the front Bank 1 oxygen sensor. You will likely wind up replacing it but you should also consider these possible solutions:
* Check and fix any exhaust leaks
* Check for wiring problems (shorted, frayed wires)
* Check the frequency and amplitude of the oxygen sensor (advanced)
* Check for a deteriorating / contaminated oxygen sensor, replace if necessary
* Check for inlet air leaks
* Check the MAF sensor for proper operation



P0141 - O2 Sensor Heater Circuit Malfunction (Bank 1, Sensor 2)

What does that mean?
This code means that the heated circuit in the oxygen sensor on bank 1 decreases time needed to enter closed loop. As the O2 heater reaches operating temperature, the oxygen sensor responds by switching according to oxygen content of the exhaust surrounding it. The ECM tracks how long it takes for the oxygen sensor to begin switching. It the ECM determines (based on coolant temp) that too much time elapsed before the oxygen sensor began operating properly, it will set P0141. See also: P0135 (Bank 1, Sensor 1).

Symptoms:
You will likely notice poor fuel economy the illumination of the Check Engine Light.

Causes:
A code P0141 may mean that one or more of the following has happened:
* open or short to ground in the wiring harness
* O2 heater circuit wiring high resistance
* O2 heater element resistance is high
* Internal short or open in the heater element

Note: Typically a failed catalytic converter does not cause this code. You're more likely to see a P0420 code for a failed converter.

Possible Solutions:
* Replace oxygen sensor (cannot repair open or short that occurs internally to sensor)
* Repair short or open or high resistance in wiring harness or harness connectors


Hope helps (remember rated and comment this).

Jul 01, 2010 | 2000 Pontiac Sunfire

1 Answer

My Check Engine Light keeps coming on


check your MAF sensor, if it's dirty clean it then reset your check engine light again. this should work.

Feb 19, 2009 | 1999 Chevrolet S-10 Pickup

1 Answer

Engine code p0421


Catalyst System Efficiency Below Threshold (Bank 1)

The catalytic converter has an oxygen sensor in front and behind it. When the vehicle is warm and running in closed loop mode, the upstream oxygen sensor waveform reading should fluctuate. The downstream O2 sensor reading should be fairly steady. Typically the P0420 code triggers the Check Engine Light if the readings of the two sensors are similar. This is indicative of (among other things) a converter that is not working as efficiently as it should be (according to specs). It is part of the vehicle emissions system.

A code P0420 may mean that one or more of the following has happened:

* Leaded fuel was used where unleaded was called for
* An oxygen sensor is not reading (functioning) properly
* The engine coolant temperature sensor is not working properly
* Damaged or leaking exhaust manifold
/ catalytic converter / exhaust pipe
* Retarded spark timing
* The oxygen sensors in front and behind the converter are reporting too similar of readings


To Do list

* Check for exhaust leaks at the manifold, pipes, catalytic converter. Repair as required.
* Use a scope to diagnose the oxygen sensor operation (Tip: The oxygen sensor in front of the catalytic converter normally has a fluctuating waveform. The waveform of the sensor behind the converter should be more steady).
* Inspect the downstream heated oxygen sensor (HO2), replace if necessary
* Replace the catalytic converter

Jan 04, 2009 | 2001 Hyundai Sonata

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