LX Forums Forum banner

PO443 P0499 engine codes?

29K views 5 replies 3 participants last post by  DEMON1C 
#1 ·
Hey guys I'm posting this everywhere to find out what these codes are? Can't find any info on them anywhere.I really don't want to take the car to the dealer to find out what the problem is if I can avoid it. Does anyone know?
Also along with my check engine light being on my battery light is on too. I had my alternator checked and it was not putting out any voltage so I put in a re-manufactured one and still have the battery light light up. My Fog lights are not working too if this helps. Wondering if I can drive the car with these codes? or will it do any damage?
 
#2 · (Edited)
P0443 trouble code symptoms could be just an malfunction indicator lamp (MIL) illumination. There may be no drivability problems at all. But, it's also possible to have a lean condition or a rough running engine if the purge valve is stuck open. Usually though, these symptoms are accompanied by other EVAP codes. Another symptom may be excessive pressure in the gas tank in the form of a "whooshing" sound when the cap is removed, indicating a purge valve that isn't working at all or

P0499 The Powertrain Control Module (PCM) / Engine Management Computer (EMC) / Engine Control Module (ECM) has detected a fault with the circuit that controls the vent for evaporative emission systems vapor. As fuel sits in the tank it lets out fuel vapor, while driving this vent opens and allows the vapors to be circulated into the engine intake manifold, a charcoal canister or into the atmosphere, depending on the vehicle. This vent valve is apart of the simple, yet complicated evaporative emissions system.

Read more at:*P0499 Evaporative Emission System Vent Valve Control Circuit High
Copyright OBD-Codes.com

Sent from my SM-N920V using Tapatalk
 
  • Like
Reactions: DEMON1C
#3 ·
P0443 trouble code symptoms could be just an malfunction indicator lamp (MIL) illumination. There may be no drivability problems at all. But, it's also possible to have a lean condition or a rough running engine if the purge valve is stuck open. Usually though, these symptoms are accompanied by other EVAP codes. Another symptom may be excessive pressure in the gas tank in the form of a "whooshing" sound when the cap is removed, indicating a purge valve that isn't working at all or

The Powertrain Control Module (PCM) / Engine Management Computer (EMC) / Engine Control Module (ECM) has detected a fault with the circuit that controls the vent for evaporative emission systems vapor. As fuel sits in the tank it lets out fuel vapor, while driving this vent opens and allows the vapors to be circulated into the engine intake manifold, a charcoal canister or into the atmosphere, depending on the vehicle. This vent valve is apart of the simple, yet complicated evaporative emissions system.

Read more at:*P0499 Evaporative Emission System Vent Valve Control Circuit High
Copyright OBD-Codes.com

Sent from my SM-N920V using Tapatalk
What about the P0499 code to go along with it? That's high pressure code I think? So it could be a bad valve or a stuck open valve? What about the gas cap could that also cause the issue if it is old and doesn't seal any more?
The car runs fine as far as I can feel.

Sent from my ONEPLUS A3000 using Tapatalk
 
#4 ·
P0499 is the second issue i posted.
All the info can be found on the linked page

Sent from my SM-N920V using Tapatalk
 
#6 ·
I found out that sometimes when the alternator goes out it takes the PCM out with it and causes these false codes too ( battery light and other ).

Sent from my ONEPLUS A3000 using Tapatalk
 
This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.
Top