Question about 2003 Honda Odyssey

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Code p0172 2003 honda Odyssey . I open the hood and i found out that one of the valve is not connected and i noticed there's a coolant all over the engine.

My question is where is that valve connected it locate at the right side of the engine near at radiator. When i start the van there's a knocking sound and there's a time while im driving i can't go 50 or 60 mph. Its like im driving with a anchor. Please help.

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Https:// this link is for your code ---but as to the knocking sound sounds like over heating and you have engine damage --check for leaks [[the valve sounds like a petcock for draining system ]] and before trying to fix code check and test the cooling system compression valvetrain oil for water infiltration and plugs for water fouling

Posted on May 25, 2019


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Posted on Jan 02, 2017



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SOURCE: 2003 Honda Oddyssey - PO325 Knock Sensor

If The engine in your van is a 3.5L, the knock sensor is under the upper intake manifold. This has to be removed in order to access the sensor on top of the engine block. The job requires an upper intake gasket set and about 1.5 hours to do; if you are handy with tools. For those who aren't; better off leaving this one to the professionals.

Posted on Dec 09, 2008


  • 253 Answers

SOURCE: I was trying to do a flush on my radiator.was able

There are no plugs in the block. You need to leave the radiator plug open and run the engine with a water hose running in the radiator. Keep a close eye on the temp. This will clean the system as good as you can with out major work. Good Luck

Posted on Jun 05, 2009


  • 122 Answers

SOURCE: How do you replace the radiator coolant on a 2005 Honda Odyssey

Try looking here for general removal/replacement info...

Posted on Jul 02, 2009


  • 2 Answers

SOURCE: 2006 Honda Odyssey shakes around 40 mph

They have a recall update on torque converter shutter, if update has been installed or problem still exist then the torque converter needs replaced

Posted on Sep 04, 2009

Tomas Skubisz

  • 1 Answer

SOURCE: Honda Odyssey 2005 sliding doors won't open, beep 3 times

If you click once your remote control ,will open just driver side doors.To unlock all of them have to press twice , and then sliders.

Posted on Sep 22, 2009

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I had my radiator fail last week. I have always had a little knock in the engine, but now I have big knocking sound. I had the head pressure test in each tested to 150 PSI. I have replaced the radiator and...

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