1G error code 25???

[amon]

I am getting this code from my 1G(3rd Gen) and havent got this in my handy book of fault codes.
Does anyone know this one?

Cheers Guy

[Rcubed]

i've copied from another thread which says each error code is the same prob regardless of ecu:
so
25 A/F Lean O2 sensor output in less than 0.45 volts for at least 90 seconds when O2 sensor is warmed and 1500 rpm or above.
open injector circuit
lack of fuel pressure
Ignition system
Vacuum sensor
O2 sensor
ECU

[amon]

Thanks for that i will go through that bunch and check them all,that does seem to cover quite a few faults though??
Vacuum sensor where does that live,not TVIS vacuum thingy
i get 55psi rail pressure.
Open Injector circuit how would i check that?
02 sensor is brand new,and the ignition system seems fine(new leads,cap,rotor,etc).
I also dont think its surge as there is a pot
The only symptom form this code is getting on boost up to about 6psi then a considerable dip in power like its running out of fuel,it may have a small back fire and can usualy push on.
This does happen when i stab foot to floor and not so much if i am a little slower with the pedal(not a great deal slower)
this engine is stock except for hybrid T28 single conv,FMIC,pod 3" dump.
I had a feeling it might have been the AFM and are swapping 1 over to see.

anyway thanks again

Guy