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TOV Forums > Odyssey > > Re: 06 Odyssey IMRC P1078 Code

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texas roper
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06 Odyssey IMRC P1078 Code    (Score: 1, Normal) 03-23-2008 23:47
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While driving out to Colorado, after an uphill downshift, the service engine light came on. The helpful folks at AutoZone lent me a code reader to see what was up. The code was P1078 - IMRC valve stuck long. I'll be taking it in to the dealership this week, but I'm curious what it might be about. I notice that the VCM (ECO light) no longer activates. The light has been on for a week and 1000+ miles.

Thanks, Joel
'06 EX-L/NAVI/RES
JeffX
Profile for JeffX
Re: 06 Odyssey IMRC P1078 Code    (Score: 1, Normal) 03-24-2008 09:21
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texas roper wrote:
While driving out to Colorado, after an uphill downshift, the service engine light came on. The helpful folks at AutoZone lent me a code reader to see what was up. The code was P1078 - IMRC valve stuck long. I'll be taking it in to the dealership this week, but I'm curious what it might be about. I notice that the VCM (ECO light) no longer activates. The light has been on for a week and 1000+ miles.

Thanks, Joel
'06 EX-L/NAVI/RES



IMRC=Intake Manifold Runner Control. Here's the description from the press kit:

Dual-Stage Induction System (i-VTEC Engine)

Designed specifically for the Odyssey's i-VTEC engine, the induction system works in concert with the valvetrain to significantly boost torque across the engine's full operating range. Internal passages and two butterfly valves commanded by the powertrain control module are configured to provide two distinct modes of operation. The valves are closed at lower rpms. In this mode, the three cylinders on each bank draw air from only the nearer half of the manifold's internal chamber, or plenum. The volume of the plenum and the length of inlet passages are both tuned to maximize the resonance effect, wherein pressure waves are amplified within each half of the intake manifold at certain rpm ranges.
The amplified pressure waves significantly increase cylinder filling and the torque produced by the engine throughout the lower part of its rpm band.


it sounds like the butterfly valves got stuck in one position. Perhaps the actuator servos failed or something jammed the mechanism, or perhaps it's simply a loose connection. In any case, it's probably not a huge deal and should be covered by your warranty.
texas roper
Profile for texas roper
Re: 06 Odyssey IMRC P1078 Code    (Score: 1, Normal) 03-25-2008 11:46
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Thanks for the info. I dropped it off this morning at the dealer, and they found the problem in short order. Seems that when they replaced the power steering pump a few weeks ago, they neglected to completely re-seat the IMRC connector, and it worked its way loose.

I'm glad that's all it was. I was starting to get frustrated at how often I've been having to take this Honda back in for repairs....(front wheel bearings, power steering pump, CD changer (2x), 3rd row seat covers, front brakes)
JeffX
Profile for JeffX
Re: 06 Odyssey IMRC P1078 Code    (Score: 1, Normal) 03-25-2008 13:04
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texas roper wrote:
Thanks for the info. I dropped it off this morning at the dealer, and they found the problem in short order. Seems that when they replaced the power steering pump a few weeks ago, they neglected to completely re-seat the IMRC connector, and it worked its way loose.

I'm glad that's all it was. I was starting to get frustrated at how often I've been having to take this Honda back in for repairs....(front wheel bearings, power steering pump, CD changer (2x), 3rd row seat covers, front brakes)



ugh, that seems excessive. Knock on wood, so far we have almost 30000 miles on our '06 EX-L and haven't had a single unscheduled visit. All we've had to worry about have been the oil changes and regular maintenance. I'm glad this one was something simple (as I suspected).
TonyEX
Profile for TonyEX
Re: 06 Odyssey IMRC P1078 Code    (Score: 1, Normal) 03-25-2008 15:50
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Hmmm, we had our power steering pump also replaced at 18K miles too!

It started to make some noise at around 15K miles and later on I realized at all full steering lock (when parking ) I had no assist.

As much as I enjoyed the manly workout, I though it best to get it fixed.

texas roper wrote:
Thanks for the info. I dropped it off this morning at the dealer, and they found the problem in short order. Seems that when they replaced the power steering pump a few weeks ago, they neglected to completely re-seat the IMRC connector, and it worked its way loose.

I'm glad that's all it was. I was starting to get frustrated at how often I've been having to take this Honda back in for repairs....(front wheel bearings, power steering pump, CD changer (2x), 3rd row seat covers, front brakes)



Heckler
Profile for Heckler
Re: 06 Odyssey IMRC P1078 Code    (Score: 1, Normal) 05-16-2008 00:08
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Hey TonyE, (or anyone with this same issue)

Recently my 05 Ody has been making a weird noise when I turn the wheel and once while making a U turn it emitted a loud noise that sounded like when the power steering fluid reservoir is empty (which it wasn't). I return home and the noise stopped but I've noticed that the steering at low speeds is not effortless like it used to be. Can you describe the noise? I have a schedule maintanance visit and would like to suggest the pump as they check for issues. Thanks!

TonyE wrote:
Hmmm, we had our power steering pump also replaced at 18K miles too!

It started to make some noise at around 15K miles and later on I realized at all full steering lock (when parking ) I had no assist.

As much as I enjoyed the manly workout, I though it best to get it fixed.

texas roper wrote:
Thanks for the info. I dropped it off this morning at the dealer, and they found the problem in short order. Seems that when they replaced the power steering pump a few weeks ago, they neglected to completely re-seat the IMRC connector, and it worked its way loose.

I'm glad that's all it was. I was starting to get frustrated at how often I've been having to take this Honda back in for repairs....(front wheel bearings, power steering pump, CD changer (2x), 3rd row seat covers, front brakes)





TonyEX
Profile for TonyEX
Re: 06 Odyssey IMRC P1078 Code    (Score: 1, Normal) 05-19-2008 14:44
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It was like a "brrrrrrrrrrrrrrrrrrrr" sound.

The steering boost got non existent near the limits of steering.


Heckler wrote:
Hey TonyE, (or anyone with this same issue)

Recently my 05 Ody has been making a weird noise when I turn the wheel and once while making a U turn it emitted a loud noise that sounded like when the power steering fluid reservoir is empty (which it wasn't). I return home and the noise stopped but I've noticed that the steering at low speeds is not effortless like it used to be. Can you describe the noise? I have a schedule maintanance visit and would like to suggest the pump as they check for issues. Thanks!

TonyE wrote:
Hmmm, we had our power steering pump also replaced at 18K miles too!

It started to make some noise at around 15K miles and later on I realized at all full steering lock (when parking ) I had no assist.

As much as I enjoyed the manly workout, I though it best to get it fixed.

texas roper wrote:
Thanks for the info. I dropped it off this morning at the dealer, and they found the problem in short order. Seems that when they replaced the power steering pump a few weeks ago, they neglected to completely re-seat the IMRC connector, and it worked its way loose.

I'm glad that's all it was. I was starting to get frustrated at how often I've been having to take this Honda back in for repairs....(front wheel bearings, power steering pump, CD changer (2x), 3rd row seat covers, front brakes)







 
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