What causes 61-1, 83-1, p2647, p0303, p0405, and p0606 on honda odyssey 2005 codes to be displayed?
61-1 BATTERY VOLTAGE FAILURE
83-1 ECM Relation failure
p0303- is a misfire code check the sparks plugs, and coil pack.
p0405- egr valve might be clogged and may need to be cleaned
p0606- ECM problem
p2647- VTEC oil pressure switch mean need to be replaced or its clogged from dirty oil, you can try to do an oil flush and replace the oil.
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