Honda Car Forum

Hi there guys ive inherited a Honda Accord SIR. Its all good, BUT it has a problem. The Gearbox is playing up. It makes NO difference if the shifter is in D1,D2,D3,D4. As in if its in D1 it still goes from 1st to 2nd. However this is as far as it goes, it will NOT go into third or fourth. I am getting an error code, which when i pull it out, the D4 light flashes one long and 5 short (15). This points in the Service manual to a Main Shaft sensor, which, as below, ive replaced and then Reset the TCU. Still brings up the same code (15).

Ive relaced :
The Shifting Solenoids
Both Shaft Speed sensors on the gearbox
The TCU (Tranny ECU)
The VSS (Vehicle speed sensor,

Ive also changed the Fluid 3 times, which hasnt helped at all.

PLEASE HELP :S