what distributor did you buy for it? mot likely , if i remember correctly, you havent hooked up the CA sensor (cam angle ensor)

i think you need to wire the Cam Angle Sensor into the new distributor. Should be a green and yellow wire.

All the DOHC ZCs have a Cam Ambgle sensor on the exhaust cam. you have to wire that INTO the distributor harness or repin it. if you dont itll throw that code. most likely since you just replaced the distributor, it is the problem.