Warning Closed-loop gasoline bank1 low

[Maverick797]

This warning popped up this evening:
“DTC 1156: Closed-loop gasoline bank1 low”
but cant find much info on it anywhere. From what I can find, sounds like a sensor issue? Anyone else had this warning? What does it mean? Do I need to take it to the dealer immediately, or can I shut her down and try again tomorrow?
2013 SAN G23 550XS

[rsess]

I get that too. Same engine. Don’t know what it is either

[Maverick797]

Now I got a DTC 172 Adaptive Learn Gasoline Bank 1 Low

[ironj32]

Most likely your O2 sensors.

[Infinity]

x2, think that is O2 sensor.

[Mahnal]

Now I got a DTC 172 Adaptive Learn Gasoline Bank 1 Low

Maverick797 - How did you fix this. I just got this error today on the same engine?

[Paul W]

I used to get this code all the time. So I changed all O2 sensors and still got the code once after the change.
I then changed the plugs, fuel filter, fuel oil and water separator and no more codes for a month or so... Not sure if I got it solved completely but so far so good. Check all the seals around the top of the engine, and into cats could be a leak? Check all the wires to the O2 sensors to make sure there good not burnt?

[Paul W]

Mine is a PCM H5 direct injection engine