Eyup Keith, is this a 4 or 6 speed gearbox?

Whilst I can't translate the code directly......If it's a 4 sp AL4 then pressure reg 1 circuit faults are usually caused by wiring loom faults on the top of the gearbox between the gearbox and the multiplug, 6 sp TF80SC then solenoid codes are usually caused by either a straightforward solenoid failure or an internal wiring loom fault.

Has the gearbox had any attention lately?