From: franz fripplfrappl on
2003 Highlander with 51,000 miles.

Both Check Engine and VSC lights are on. Manuals says take to Toyota
dealer. Meanwhile OK to drive.

I have tried the ABS system on loose gravel and the brakes feel and sound
like they are functioning OK.

Any ideas what might be causing the lights to go on? I have had the
vehicle for a week. No idea of age of battery or service record.

From: Jeff Strickland on

"franz fripplfrappl" <bogus(a)bogus.net> wrote in message
news:yAMOj.4541$vF.3871(a)newssvr21.news.prodigy.net...
> 2003 Highlander with 51,000 miles.
>
> Both Check Engine and VSC lights are on. Manuals says take to Toyota
> dealer. Meanwhile OK to drive.
>
> I have tried the ABS system on loose gravel and the brakes feel and sound
> like they are functioning OK.
>
> Any ideas what might be causing the lights to go on? I have had the
> vehicle for a week. No idea of age of battery or service record.
>


Visit your local AutoZone store, where they (or you) pull the check codes
for free.

You can't do anything until you know what the codes are.

If you drive the car, you can check the codes in the parking lot. If you
elect to not drive the car, they will sell you the scan tool on your credit
card, then give you full credit for the purchase when you bring the tool
back.

There is a data port along the bottom of the dash board in the general
vicinity of where your left leg rests as you drive. Plug the scan tool in,
set the ignition to ON but not START, and read the code(s). Jot it(them)
down and and post here.

You should expect the codes to be P0nnn (where the 0 is the numeral zero).







From: franz fripplfrappl on
Update:

Had engine codes read:

P0441
Evap Emission Control System
Purge Flow Fault

P0446
Evap Emission Control System
Vent Circuit Malfunction

P0441
as above

P0442
Evap Emission Control System
.... leak (small)

P0446
as above
From: franz fripplfrappl on
On Sun, 20 Apr 2008 20:19:27 +0000, franz fripplfrappl wrote:

> Update:
>
> Had engine codes read:
>
> P0441
> Evap Emission Control System
> Purge Flow Fault
>
> P0446
> Evap Emission Control System
> Vent Circuit Malfunction
>
> P0441
> as above
>
> P0442
> Evap Emission Control System
> ... leak (small)
>
> P0446
> as above

After finding out the codes, we reset the codes via an option on the
reader. Both check engine and VSC lights are out for the moment.

I checked to make sure the gas cap is on tight. Have also checked the
hoses coming from the air cleaner housing.

Any other suggestions?
From: Jeff Strickland on
These faults have the easiest roots in a loose gas cap. They could be more
serious, but before you spend any time or money on anything, erase all
faults and be sure to seal the gas cap after every fill up.

The second most common fault is a break in a vac line, followed by an actual
problem with a system component. The evap emissions control system (fumes
from the gas tank) are the result of a poorly seated gas cap more often than
not. The system must be sealed to function properly, and the most common
break in the seal is the gas cap. There can be other causes, to be sure, but
until the gas cap is isolated, I'd not spend any time or money on any of
them.

I suggest erasing all codes and waiting to see if any of them return. In the
mean time make sure you seal the gas cap every time you fill the tank. If
the cap has a ratchet when it locks, be sure to set the ratchet 3 or 4
clicks.


None of these deal with the VSC.




"franz fripplfrappl" <bogus(a)bogus.net> wrote in message
news:jzNOj.4960$iK6.4873(a)nlpi069.nbdc.sbc.com...
> Update:
>
> Had engine codes read:
>
> P0441
> Evap Emission Control System
> Purge Flow Fault
>
> P0446
> Evap Emission Control System
> Vent Circuit Malfunction
>
> P0441
> as above
>
> P0442
> Evap Emission Control System
> ... leak (small)
>
> P0446
> as above