PCM codes 1518 0446 0420 ???

[bayareadude84]

hey guys have a '01 burb 5.3 with 200K miles

My CEL is on and I ran the codes

p1518
P0446
P0420

I don't have any throttle issues at moment,just a rough idle at times.And I do have the fuel pump wire recall #05V155 to be fixed at dealer and thinking it might fix one or more of these issues ??

Any ideas what to check or what parts to buy before I start throwing $$ at it ??


Thnx,
Dave

 

[ccapehartusarmyINF.(ret)]

the p0446 is an evap emissions system
p1518 throttle actuater control is sending invalid info to the PCM
does yer vehicle crank slow when you start it if it doesn check voltage coming out of yer battery
if voltage is fine check your brake and cruise fuses
p0420 is the bad catalytic converter code but it cant also mean yer post cat 02 sensones are the problem or you got a really big exhaust leak wich you probably dont

 

[jojo]

Evap purge vent for p0446 just had the same problem there's a black rectangular box slightly larger than a pack of cigarettes under the vehicle near the fuel tank and spare tire unplug the electrical plug remove it now you can get a new filter and try to clean it. I just bought a new one and installed it.


Sent from my iPhone using Tapatalk

 

[bayareadude84]

the p0446 is an evap emissions system
p1518 throttle actuater control is sending invalid info to the PCM
does yer vehicle crank slow when you start it if it doesn check voltage coming out of yer battery
if voltage is fine check your brake and cruise fuses
p0420 is the bad catalytic converter code but it cant also mean yer post cat 02 sensones are the problem or you got a really big exhaust leak wich you probably dont

no it doesn't crank slow,few months ago I put in new Diehard battery throwing out 14.4 volts

cleared the codes drove around for 2 days and today just p0420 stays says lean bank 1

---------- Post added at 07:36 PM ---------- Previous post was at 07:24 PM ----------

Evap purge vent for p0446 just had the same problem there's a black rectangular box slightly larger than a pack of cigarettes under the vehicle near the fuel tank and spare tire unplug the electrical plug remove it now you can get a new filter and try to clean it. I just bought a new one and installed it.


Sent from my iPhone using Tapatalk

meh $100 for a new canister PASS lol,Luckily the state I live in has no emissions !!

When I get bored one day ill remove it and try to clean out any buildup

Dave