More than likely DOT3. If you will look on the top of the Master Cylinder cap, you will find the proper fluid listed.
In the fuse box under the hood
The 2003 Honda Odyssey has a V6 engine.
The 2003 Honda Odyssey has 24 valves.
Hi The master cylinder in the odyssey is where the break fluid tank it located under the tank
The 2003 Honda Odyssey has a 5-speed automatic.
The 2003 Honda Odyssey is a gas-powered vehicle.
The 2003 Honda Odyssey is 16 ft. 9.2 in. (201.2 in.) long.
The height of the 2003 Honda Odyssey is 5 ft. 8.5 in. (68.5 in.).
The 2003 Honda Odyssey's turning circle is 37.7 ft..
The 2003 Honda Odyssey has single overhead cam (SOHC).
The 2003 Honda Odyssey runs on regular unleaded.
The curb weight of the 2003 Honda Odyssey is 4310 lbs..