1999 Honda Odyssey DTC codes P1399,P0300,P0301,P0302,P0306

1999 HONDA ODYSSEY
145,000 MILES • 6 CYL • FWD • AUTOMATIC
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RATTREN
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MY ODYSSEY JUST STARTED RUNNING ROUGH AFTER A 20 MIN DRIVE AND HAS BEEN DOIN IT EVERSINCE....I LOOK AT ALL THE POSTS ON GOOGLE AND GET A LOT OF DIFF ANSWERS
...REPAIR SOLUTIONS.COM SUGGESTED A VALVE ADJUSTMENT....?
I BASICALLY HAVE MULTIPLE CYL MISFIRES...P1399,P0300,P0301,P0302,P0306
COULD A BAD CAT CONVERTER CAUSE THIS? IF SO SHOULDNT I GET A CODE RELATED TO CAT CONV?
Oct 10, 2010 at 4:22 PM
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RASMATAZ
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Hi rattren, Welcome to 2carpros and TY for the donation

This is gonna be a tough one:

Run Lucas injection cleaner thru the fuel system and see what happens-don't work do below

Misfires galore-Okay clean out the EGR valve then check the fuel pressure and comeback with the readings and also do an engine compression check. I'll be needing this too.
Oct 11, 2010 at 4:37 AM
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HONDA TECH 1818
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Check all the ignition coils, one of them could be bad causing misfire codes.
Oct 17, 2010 at 1:14 PM
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