Question about 2001 Honda Odyssey

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2001 Honda - New Catalytics & O2 sensors -- new 0420/1739/1456

Subject: 2001 Honda Odyssey bought used with engine light on (without having passed emissions check) with about 98K miles. After having catalytic converters replaced the engine light returned. Had both O2 sensors replaced and engine light was extinguished for one day then it returned. Previous code was P0420 (Emission system below efficiency). Current codes include P0420 plus P1739 (Transmission System problem), and P1456 (Fuel System possible leak). Any thoughts?

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I would send the car for a smoke test for the emissions leak...Find out where the leak is comming from..Repair it..Reset the codes, then do a drive cycle and see what happens...

Posted on Feb 19, 2010

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Posted on Jan 02, 2017

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1 Answer

Check engine light alwas off did not pass emition test


The emission tester or garage should be able to correct it for a charge! The check engine light does not necessarily need to be on to fail the test.

Oct 15, 2015 | 2001 Honda Odyssey

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O2 sencor in 2001 odyssey


What about an Oxygen Sensor?

They get replaced on all vehicles at 100,000 miles
or if they fail, before that

Need professional tools to test them & the rest of the vehicles
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May 13, 2014 | 2001 Honda Odyssey

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Hi I bought a Xc90 2004 with check engine light on.....Big mistake....When I started it it sounded so bad, but when I got on freeway she purred. I checked to see what codes are and it has 6 codes po300...


Get into a shop & have it checked out

Your not being told anything & gender has nothing to do with it

You bought a vehicle that was bought new & never worked on

As mistake--YES

Most vehicles are driven only & abused

95% of your vehicle issues can be resolved by doing the
required Preventative Maintenance never done,nothing new there

New Fluids-Brake,Motor Oil,Power Steering,Trans
New Spark Plug
New Ignition Coils
New Oxygen Sensors
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That is just some of what should have been done on all vehicles
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May 10, 2014 | 2001 Honda CR-V

1 Answer

Is there any honda expert to help my problem


TSC is traction controll .If your check engine light is on, you should have the engine codes read. Most part stores will run a check for free which will better pinpoint an exact problem.

Jun 02, 2012 | 2001 Honda Odyssey

1 Answer

Will an engine bought from a 1999 Silverado originally sold outside of California pass California emissions


There are two type of emission classes.

Federal and California emissions.

Look under the hood for the emission class sticker.
Smog check station's machine in CA are programmed to handle both types.

You do not need to change anything before the inspection.

==== Side notes: You should check the service record for the last Catalytic converter,O2 sensors and EGR valve change.
Service interval for
Catalytic ~180,000 miles O2 ~150,000 miles EGR ~160,000 miles


If you can locate the last smog test (even from out of state) Check for the
CO NOx


Aug 10, 2011 | 1999 Chevrolet Silverado 1500

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I recently bought a 2000 Honda Odyssey and the engine check light is on. I took it to AutoZone and the codes came back as P0136 and P0138. It's indicating the downstream O2 sensor. Today I jacked up...


Your car uses heated oxygen sensors. Once the key is turned on the heating element in the sensor will start heating up. If you leave the key OFF overnight and the sensor is warmer than the surrounding metal, then that would indicate a problem. Running the engine even for a just a minute will heat the exhaust system and the sensor quickly.

Oxygen sensors can maintain their "new" look for a long time. I have romved sensors that are years old and look new on the oustide but have failed. Looking new or old is not a good indication of failure.

Aug 05, 2011 | 2006 Honda Odyssey

1 Answer

2007 honda odyssey exl 30k emission system service. what is honda service adviser talking about. just past inspection


If you look at Honda's maintenance schedule they say that this is something that you should do. But if you just passed smog and the amount of miles on the vehicle I would not do it at all. Its basically a way for the dealership to get more money from you.

This is to make sure that all your emission systems is up to par no leaks, and everything is working correctly. If you where having emission issues you would be having a check engine light come on. I honestly again would not worry about it.

Jun 12, 2011 | 2007 Honda Odyssey

1 Answer

I went to the Honda dealership with my 2006 Honda Odyssey for the VSA light on. They told me its a YAW Sensor and they want $700.00 to fix it. Honda tells me ther eis no recall for this problem. Is there a...


I dont see any bulletins on the sensor having issues. the yaw sensor also referred to as roll rate sensor is located under the drivers seat. an option for you might be to replace sensor yourself and just have dealer perform the setup procedure.to replace you will need to remove the drivers seat to gain access and be very careful not to drop new sensor. might get lucky and install and light goes off with no further action,but if not most dealers will charge an hour labor to program/setup

Jan 18, 2011 | 2006 Honda Odyssey

1 Answer

My 1999 honda odyssey have a light on in the check engine, i went to the mechanic & plug it to the small computer, the computer said no response to code P0138B BANK 1 SENSOR 2 HIGHT VOLT, the mechanic...


There is are upstream and downstream O2 sensors. 1 or 2 (upstream) before the catalytic converter which sends signals for closed loop fuel control and OBD II monitoring, and 1 (downstream) after the catalytic converter, which is used to monitor the catalytic converter operation. The PCM monitors the signal from each O2 sensor.

Nov 02, 2010 | 2006 Honda Odyssey

2 Answers

P0420 error code honda odyssey


You don't necessarily need a new converter. I had this code on my 2006 Odyssey at around 150,000 miles for both the front and rear converter and only needed new downstream O2 sensors ($40 for the back, $60 for the front). This is why my car never sees the inside of a dealership shop, they're happy to replace your converter for >$1000 without even looking at the problem. A little troubleshooting goes a long way here. I grabbed an engine code reader from the local auto parts store and read the O2 sensors with the engine running and noticed the voltages on them were erratic, and they shouldn't be. Mine were reading ~ 0.8 volts, then would jump down to < 0.1 volts for a couple readings, then back up to 0.8. The downstream sensor readings should be fairly stable.

Apr 19, 2010 | 2000 Honda Civic

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