Check engine light help


unotaz

unotaz

GT Owner
May 24, 2018
85
Los Angeles
I haven't driven my FGT in well over 3 months. I was moving the car to get access to some storage space behind. Car started right up, no problem as it was on battery tender today. But right away, I got a check engine light. I used my OBD2 reader and the codes are:

P1235 Fuel Pump control out of range
P1237 Secondary Circuit (FP) Driver Module
P12450 Unable to bleed up fuel tank vacuum

Is this something I need to worry about (parts gone bad) or will they will just go away with some miles?
 
  • Like
Reactions: Art138
Did you try to clear the codes and drive it til it warms up to see if it repeats?
 
I would get that checked on their proprietary diagnostic machine, If you can, be present
during major fixes to your car
 
Clear codes and go for a drive
 
  • Like
Reactions: texas mongrel
With those errors, I would also suspect the car will exhibit drivability issues and the most likely cause is that the secondary fuel pump has failed - but then we already told you this.
 
  • Like
Reactions: GEE-TEE
Got it. I will go for a drive this weekend and report back.

nota4re said:
With those errors, I would also suspect the car will exhibit drivability issues and the most likely cause is that the secondary fuel pump has failed - but then we already told you this.
Click to expand...
 
Clear codes, poke flapper in fuel filler(carefully) and drive it.
P1235 and P1237-Check the fuel pump relay.
P1450-too much vacuum build up in fuel tank. Something is restricted.
 
Got it, thanks!

GT@50 said:
Clear codes, poke flapper in fuel filler(carefully) and drive it.
P1235 and P1237-Check the fuel pump relay.
P1450-too much vacuum build up in fuel tank. Something is restricted.
Click to expand...
 
GT@50 said:
Clear codes, poke flapper in fuel filler(carefully) and drive it.
P1235 and P1237-Check the fuel pump relay.
P1450-too much vacuum build up in fuel tank. Something is restricted.
Click to expand...
Poke flapper??? My 2006 doesn't have a flapper and can't be poked without damaging it. My fuel seal moves to the side and does not flap. So, I always carefully move it sideways when refueling and never poke it.
 
TO AWSUM said:
Poke flapper??? My 2006 doesn't have a flapper and can't be poked without damaging it. My fuel seal moves to the side and does not flap. So, I always carefully move it sideways when refueling and never poke it.
Click to expand...
The top part slides to the side. Below that is the flapper(the actual seal) that's known to break(not this problem). If there's excessive vacuum in the tank, "poking" it open will relieve it.
 
GT@50 said:
The top part slides to the side. Below that is the flapper(the actual seal) that's known to break(not this problem). If there's excessive vacuum in the tank, "poking" it open will relieve it.
Click to expand...
After many refuels, I've never looked down inside and noticed the flapper. LOL
 
You must log in or register to reply here.

Top Bottom