Run for min. then has a code 12 come up , whats a code 12 ?

Ok so if 10lbs x 12min = 120 min or 2 hours
1lbs x 12 min = 12 min 2 hours 12 min
.48 is about 1/2 so 1/2 of 12 is 6 min which would give you 2 hrs 18 min...

You need to run what is called a fault code test on the OBD1 engine control system. That likely requires a dealer scan tool.

Program modes
Program A or 1 is your primary program setting. All Zones will run on this program.
Select program B. Or 2
Set start time for program B usually an hour or two after the LAST zone (12) run time on program A or 1
1. set selected run time for the zones you want to run. 5 min -20 min ( leave the others 00:00 or off)
Select program C or 3
And repeat above.

Keep track of the start times of each program as 12 zones running for 10 min will add up to 120 min or 2 hours total. So if Program A/1 starts at 6am it will finish at 8 am. Set program B/2 start time at 11am. Them select the specific area/zone you want to run again will water the area a second time. Just remember to leave the other areas you don't want to water Set at 00:00 or off. Repeat through all the programs and you off to enjoy your day. Cheers

3.4L Engine Sensor Location Pictures and Comments

www.greatautohelp.com/sensor-location/3400-Sensor-Comments-2.html
the battery for a few minutes to see if that helped. ... If the gauge is at half way on the first start, then yes, either the ... All of a sudden I could not accelerate and the carelost power. ... But once the temperature gauge goes to normal it will run fine. ... 3-7-12. I replaced head gaskets and intake gaskets on my 2000 Pontiac 3.4L

[PDF]2000 Pontiac Montana Owners Manual - GM Extended ...

Do you have normal fuel pressure at the injectors ?

Here is the service manual for that unit. Run it thru the diagnostic mode to see if you get any error codes to pop up.

Well code 12 means you are in the test mode of the computer, so skip that one.
Code 54 is telling you the fuel pump circuit voltage is low, which could be the pump relay.

Clear code, exit mode and start dryer. If problem persists, replace Main Control Board

http://www.obd-codes.com/p0441

hi my names pete ill try and help c7 is where the start up sequence has ended c12 is saying gas service has been interupted hope this helps