DTC codes

bob213 · 07-26-2008, 11:06 PM

I know when I install my EGR blocker plate I will get a code with CA emmissions. Does anyone know what number that code will be? If I reset the code with my Predator will it come back again?
Now, if I were to lose my cat will I throw a different code?
What number will that be?
Will the Predator reset that code?
Will it come back?
Just trying to do things one at a time to narrow down potential problems.
Thanks

**BigRedChevy** · 07-27-2008, 06:51 AM

EGR codes P0401 and a P0404 are the ones that the blocker plate and no cat causes. If you are running the predator then it will block the codes and they won't come in.

bob213 · 07-27-2008, 03:00 PM

Thanks Kyle. !!!

**BigRedChevy** · 07-27-2008, 04:46 PM

Not a problem.

dordtrecht5 · 07-27-2008, 06:23 PM

Quote:

Originally Posted by BigRedChevy

EGR codes P0401 and a P0404 are the ones that the blocker plate and no cat causes. If you are running the predator then it will block the codes and they won't come in.

Do you hae any idea what these codes are indicate. On my road trip I had these codes come on and I wasn't sure what they were, especially with no tuner yet. So I took it to a dealership and they put it on the computer and told me that I had restriction on the fuel. They suggested a fuel filter change. I will never let the dealership change another fuel filter that is for sure. $34.95 for the filter and $96 labor for a 30 minute job.

They did tell me that the fuel filter was pulling 6 inches vacuum instead of the 9 that is needed. I was 600 miles from home so I just went with it because i noticed that my mileage went from about 20 to between 15 and 18 before the filter. I haven't filled up to calculate the mileage after filter change.

**BigRedChevy** · 07-27-2008, 06:56 PM

P0401 Exhaust Gas Recirculation Flow Insuff Detected
P0404 Exhaust Gas Recirculation Circ Range/Perf

These 2 codes have nothing to do with the fuel filter. The one you usually get for the fuel filter is P0087 Fuel Rail/Sys Pres-Too Lo.