p0452

border man · Post by **border man** » Mon Jul 14, 2008 7:53 pm

Been setting this code lately. I go through about 4-5 cycles and it goes away, then 4-5 cycles later it comes back. Any ideas? I changed my fuel pump out back in May after the truck stranded me on a Sunday (autozone). I have since swapped out with another new pump, but still get the MIL light.

roadrunner · Post by **roadrunner** » Tue Jul 15, 2008 3:37 pm

P0542??? That's a new one on me. Not in my list of trouble codes. Mine skips from 534 to 550.

EDIT: Looked on several websites on OBDII codes and they all indicated this code is for P0542 Intake Air Heater Circuit High. Don't have a clue how that fits into our CC's.

Post by **HenryJ** » Tue Jul 15, 2008 3:47 pm

His is a 2000

roadrunner · Post by **roadrunner** » Tue Jul 15, 2008 3:52 pm

Still OBDII???

Post by **HenryJ** » Tue Jul 15, 2008 4:03 pm

Yes but it may show some code 2001 and up do not like : P0542 Manifold Intake Air Heater Circ Hi

I am hoping he transposed the numbers and means P0452. If that is the case he needs to read this thread: Evap Vent Valve Filter

roadrunner · Post by **roadrunner** » Tue Jul 15, 2008 4:09 pm

That would make more sense.

border man · Post by **border man** » Tue Jul 15, 2008 5:23 pm

HJ you are the man, that's the code I meant. Low Pressure something.... I looked it up online and everything led to the fuel tank pressure sensor therefore I got a new pump. By the way, changing a fuel is easy if you have the proper tools and equipment (I didn't here in NM), I had to use boxes, shoes, and other stuff to hold up the tank...

border man · Post by **border man** » Wed Aug 13, 2008 7:37 am

Ok guys tried the evap vent cleaning, code is still there. I get the P0452 code not the 0442. The code comes and goes depending on fuel level it seems...