Honda Car Forum

Hello,

This has happened the past couple of trips between Washington D.C. and
Cleveland, Ohio. While driving on the the PA Turnpike about 3 hours
into the trip the Check Engine Light and the TCS light come on. The TCS
light goes off, but the Check Engine Light stays on. However, upon
reaching our destination (either Cleveland or D.C.), the Check Engine
light will go off after 3 local trips. One wrinkle, the last time this
happened (last Saturday), the light came on about 15 minutes into the
return trip on route 480 or 271(?) in Ohio going 55 mph. Anyone have
any what might be happening, why the check engine light only comes on
when traveling at highway speeds? Thanks.

JazzMan <karriblenospam@nospammyyahoo.com> wrote in
news:BeA7f.10854$Ix3.3840@dukeread05:

> Hello,
>
> This has happened the past couple of trips between Washington D.C. and
> Cleveland, Ohio. While driving on the the PA Turnpike about 3 hours
> into the trip the Check Engine Light and the TCS light come on. The TCS
> light goes off, but the Check Engine Light stays on. However, upon
> reaching our destination (either Cleveland or D.C.), the Check Engine
> light will go off after 3 local trips.



So the error is associated with constant throttle position and/or constant
high RPM: A clue.



> One wrinkle, the last time this
> happened (last Saturday), the light came on about 15 minutes into the
> return trip on route 480 or 271(?) in Ohio going 55 mph. Anyone have
> any what might be happening, why the check engine light only comes on
> when traveling at highway speeds? Thanks.
>


Get the error code(s) read. AutoZone will do it for free.

Without the error code(s), diagnosis is impossible.

--
TeGGeR®

The Unofficial Honda/Acura FAQ
www.tegger.com/hondafaq/

"BCH" <bchaasiii@comcast.net> wrote in message
news:886dnSnA__e49MLeRVn-hA@comcast.com...
> And I thought it was just me. I experienced the same problem on two
> separate
> 1000 mile trips to Orlando FL. And to answer your question it only
> occurred
> at highway speeds. Never identified the problem and it has not occurred
> again in over a year. Thanks for asking and hope we get resolution.
>
Wondering out loud... could it be the ECU was complaining about "fuel trim"
(the amount it has to adjust what it expected to be injecting in order to
satisfy the O2 sensor)? If so, it could be as simple as an air filter or
fuel filter that needs to be changed or that was recently changed when it
*really* needed it, or a fuel pressure regulator that changed a bit. Or it
could be something else altogether :-}

"Check engine" lights remind me of that old lampoon, 'If Microsoft made cars
there would be a "general car fault" light.' The best humor has an element
of truth.

Mike

Common problem with Odyssey of that vintage. Check forum at www.odyclub.com
.. More than likely EGR or Transmission. There are TSB's on both. Check with
your dealer and have the code read. The codes and information is still there
even if they go off. Honda has extended warranties on both depending on your
mileage.........


"JazzMan" <karriblenospam@nospammyyahoo.com> wrote in message
news:BeA7f.10854$Ix3.3840@dukeread05...
> Hello,
>
> This has happened the past couple of trips between Washington D.C. and
> Cleveland, Ohio. While driving on the the PA Turnpike about 3 hours
> into the trip the Check Engine Light and the TCS light come on. The TCS
> light goes off, but the Check Engine Light stays on. However, upon
> reaching our destination (either Cleveland or D.C.), the Check Engine
> light will go off after 3 local trips. One wrinkle, the last time this
> happened (last Saturday), the light came on about 15 minutes into the
> return trip on route 480 or 271(?) in Ohio going 55 mph. Anyone have
> any what might be happening, why the check engine light only comes on
> when traveling at highway speeds? Thanks.

And I thought it was just me. I experienced the same problem on two separate
1000 mile trips to Orlando FL. And to answer your question it only occurred
at highway speeds. Never identified the problem and it has not occurred
again in over a year. Thanks for asking and hope we get resolution.


"JazzMan" <karriblenospam@nospammyyahoo.com> wrote in message
news:BeA7f.10854$Ix3.3840@dukeread05...
> Hello,
>
> This has happened the past couple of trips between Washington D.C. and
> Cleveland, Ohio. While driving on the the PA Turnpike about 3 hours
> into the trip the Check Engine Light and the TCS light come on. The TCS
> light goes off, but the Check Engine Light stays on. However, upon
> reaching our destination (either Cleveland or D.C.), the Check Engine
> light will go off after 3 local trips. One wrinkle, the last time this
> happened (last Saturday), the light came on about 15 minutes into the
> return trip on route 480 or 271(?) in Ohio going 55 mph. Anyone have
> any what might be happening, why the check engine light only comes on
> when traveling at highway speeds? Thanks.

Interesting that you stated fuel. The problem only occurred immediately
after re-filling the fuel while on the 1000 mile journey.


"Michael Pardee" <michaeltnull@cybertrails.com> wrote in message
news:qbGdna9OU8iL5MLeRVn-pA@sedona.net...
> "BCH" <bchaasiii@comcast.net> wrote in message
> news:886dnSnA__e49MLeRVn-hA@comcast.com...
> > And I thought it was just me. I experienced the same problem on two
> > separate
> > 1000 mile trips to Orlando FL. And to answer your question it only
> > occurred
> > at highway speeds. Never identified the problem and it has not occurred
> > again in over a year. Thanks for asking and hope we get resolution.
> >
> Wondering out loud... could it be the ECU was complaining about "fuel
trim"
> (the amount it has to adjust what it expected to be injecting in order to
> satisfy the O2 sensor)? If so, it could be as simple as an air filter or
> fuel filter that needs to be changed or that was recently changed when it
> *really* needed it, or a fuel pressure regulator that changed a bit. Or it
> could be something else altogether :-}
>
> "Check engine" lights remind me of that old lampoon, 'If Microsoft made
cars
> there would be a "general car fault" light.' The best humor has an element
> of truth.
>
> Mike
>
>

You need the code pulled to determine anything for sure. Anything else is
pure speculation. Your van is a big computer and the computer monitors
everything in it. AutoZone's will pull the code for you in most places. Some
others will loan the tool for you to do it yourself. You could also buy one.
I have seen some pure code readers for about $50. End result You need the
code.



"BCH" <bchaasiii@comcast.net> wrote in message
news7KdnQDQaIEN4sLeRVn-oQ@comcast.com...
> Interesting that you stated fuel. The problem only occurred immediately
> after re-filling the fuel while on the 1000 mile journey.
>
>
> "Michael Pardee" <michaeltnull@cybertrails.com> wrote in message
> news:qbGdna9OU8iL5MLeRVn-pA@sedona.net...
>> "BCH" <bchaasiii@comcast.net> wrote in message
>> news:886dnSnA__e49MLeRVn-hA@comcast.com...
>> > And I thought it was just me. I experienced the same problem on two
>> > separate
>> > 1000 mile trips to Orlando FL. And to answer your question it only
>> > occurred
>> > at highway speeds. Never identified the problem and it has not occurred
>> > again in over a year. Thanks for asking and hope we get resolution.
>> >
>> Wondering out loud... could it be the ECU was complaining about "fuel
> trim"
>> (the amount it has to adjust what it expected to be injecting in order to
>> satisfy the O2 sensor)? If so, it could be as simple as an air filter or
>> fuel filter that needs to be changed or that was recently changed when it
>> *really* needed it, or a fuel pressure regulator that changed a bit. Or
>> it
>> could be something else altogether :-}
>>
>> "Check engine" lights remind me of that old lampoon, 'If Microsoft made
> cars
>> there would be a "general car fault" light.' The best humor has an
>> element
>> of truth.
>>
>> Mike
>>
>>
>
>

In article <Xns96FAD30AD6DE2tegger@207.14.113.17>,
"TeGGeR®" <tegger@tegger.c0m> wrote:

>
>
> Get the error code(s) read. AutoZone will do it for free.
>
> Without the error code(s), diagnosis is impossible.

Went to Auto Zone today and the Error code is P0401 (text was EGR Flow
Insufficent(?)). Interestingly, the Check Engine light came on today in
city traffic.

Two days ago, I bought a new gas gap after talking with some people at
work about the check engine light. My wife filled up the car yesterday,
but she assures me she tightened the cap (5 clicks). Before going to
Auto Zone, I tightened the cap as well (10 clicks or more). After
leaving Auto Zone, (third trip after tightening the cap), the light went
off.

JazzMan <karriblenospam@nospammyyahoo.com> wrote in
newsp78f.3425$LR1.3247@dukeread09:

> In article <Xns96FAD30AD6DE2tegger@207.14.113.17>,
> "TeGGeR®" <tegger@tegger.c0m> wrote:
>
>>
>>
>> Get the error code(s) read. AutoZone will do it for free.
>>
>> Without the error code(s), diagnosis is impossible.
>
> Went to Auto Zone today and the Error code is P0401 (text was EGR Flow
> Insufficent(?)). Interestingly, the Check Engine light came on today in
> city traffic.
>
> Two days ago, I bought a new gas gap after talking with some people at
> work about the check engine light. My wife filled up the car yesterday,
> but she assures me she tightened the cap (5 clicks). Before going to
> Auto Zone, I tightened the cap as well (10 clicks or more). After
> leaving Auto Zone, (third trip after tightening the cap), the light went
> off.
>



EGR flow has nothing to do with a loose gas cap. That's a different code
entirely and has to do with the EVAP system.

I think the light having gone off is concidental and it will come back on
again, likely with the same code.

EGR insufficient flow suggests clogged EGR passages in the head or EGR
valve, meaning they're carboned up and in need of cleaning. There is a
Honda TSB on this: 00-009. I don't know if it applies to your year, but
it's worth asking the dealer for a copy of it.

More reading:
http://www.findarticles.com/p/articl...02/ai_n9392519



--
TeGGeR®

The Unofficial Honda/Acura FAQ
www.tegger.com/hondafaq/

"BCH" <bchaasiii@comcast.net> wrote in
news:886dnSnA__e49MLeRVn-hA@comcast.com:


> And I thought it was just me. I experienced the same problem on two
> separate 1000 mile trips to Orlando FL. And to answer your question it
> only occurred at highway speeds.


That's because the ECU tests EGR flow on decel from 55mph.

If you never reach 55, chances are you'll never see that code.

--
TeGGeR®

The Unofficial Honda/Acura FAQ
www.tegger.com/hondafaq/