P1153 insufficient switching bank 2 sensor 1

[Schurkey]

At wot, it would jump to 60 then drop soon after down to 50.

Pressure reduces to 50 even though the throttle is still WFO? That's not good.

Or does the pressure reduce after WFO as your foot relaxes and the throttle closes?

 

[RyleeBoh]

Pressure reduces to 50 even though the throttle is still WFO? That's not good.

Or does the pressure reduce after WFO as your foot relaxes and the throttle closes?

It drops as we have it at wot. Im thinking it a fuel pressure regulator.

 

[Schurkey]

It drops as we have it at wot. Im thinking it a fuel pressure regulator.

I'd expect a failing fuel pump, plugging strainer, or plugging fuel filter. MAYBE a problem with venting the gas tank.

I'm thinking that if it was the regulator, it wouldn't have gone to 60 psi to begin with. Clearly, more diagnosis needed.